360results about How to "Sensitive to temperature" patented technology

A controller for directing operation of an air pollution control system performing a process to control emissions of a pollutant has multiple process parameters (MPPs). One or more of the MPPs is a controllable process parameter (CTPP) and one of the MPPs is an amount of the pollutant (AOP) emitted by the system. A defined AOP value (AOPV) represents an objective or limit on an actual value (AV) of the emitted AOP. The controller includes either a neural network process model or a non-neural network process model representing a relationship between each CTPP and the emitted AOP. A control processor has the logic to predict, based on the model, how changes to the current value of each CTPP will affect a future AV of emitted AOP, to select one of the changes in one CTPP based on the predicted affect of that change and on the AOPV, and to direct control of the one CTPP in accordance with the selected change for that CTPP.

The invention relates to a method for making a chitosan derivative. The method is characterized in that: firstly, the purified chitosan is activated by a strong base to form a hydroxyl-K type chitosan; secondly, a 1, 2-butyl oxide linkage is taken as an etherifying agent, an isopropanol is taken as a disperse phase, the reaction lasts 2 to 4 days moderately at room temperature; after the reaction is finished, 8 to 10 times volume of acetone is precipitated and washed to be neutral as well as is dried in vacuum at a temperature of 50 DEG C to obtain the white powder. The hydroxybutyl chitosan with different degrees of substitution is obtained by controlling the proportion of the chitosan and the 1, 2-butyl oxide linkage and the reaction time. The method has the advantages of good water-solubility and the existence of the temperature sensitivity at a physiological temperature.

This invention relates to a preparation method of wet-penetrating polymer laminate film. The steps includes: (1) physical mixing: dry poly- ( N - isopropyl acrylamide) systematic hydrogel, add to aquosity form memory polyurethane system, magnetic stirring (3) copolymerization: TDI (MDI), polyester (ether) soft piece, dihydroxy methylmalonic acid DMPA and catalyzer takes polycondensation reaction to generate prepolymer with NCO end. Add N - isopropyl acrylamide water solution, initiator, cross-linking agent and accelerator, carry out copolymerization reaction; (3) graft: put film at middle of radio frequency coupler electrode, and put the polyurethane film hand led by plasms body in air for 1 to 2 hours, immerge film in 5 to 10 wt percent monomer water solution. Inlet nitrogen, UV-irradiation for 15 to 30 min at low temperature, closeness place, obtain polyurethane film of graft ( N - isopropyl acrylamide) hydrogel.

The invention relates to a preparation method of a chitosan hydroxybutyl derivative. Chitosan is used as a raw material; 1,2-epoxybutane is used as an etherifying agent; the hydroxybutyl modification of the chitosan is performed in an isopropanol aqueous solution dispersion system under microwave action with controlled reaction temperature and time; a chitosan derivative, hydroxybutyl chitosan, is successfully prepared; the preparation period is greatly shortened, and the preparation efficiency is increased. During the reaction, the hydroxybutyl modification of the chitosan is performed orderly under the microwave action and with controlled reaction temperature and time, which shortens the preparation period. The product has a wider pH dissolution range, and has a soluble property in weakacid, neutral, and weak alkaline aqueous solutions, that is to say, the limitation that chitosan is only soluble in acids or acid solutions is improved; the aqueous solution of the product has temperature sensitivity, can be transformed between an aqueous solution and hydrogel by adjusting the temperature; and the product is widely applicable to fields of biomedicine, tissue engineering, pharmaceutical carriers, chemical engineering, food, cosmetics, etc.

Embodiments of this invention regulate temperature inside an analytical instrument housing using a heat exchanger disposed adjacent an opening in the housing. Coolant is transferred to the heat exchanger to allow the heat exchanger to regulate a temperature of air drawn into the housing and over a temperature sensitive component. In certain embodiments, the coolant is also transferred to other structures and / or components in the instrument to regulate the temperatures of those structures and / or components.

The invention relates to an injectable temperature sensitive gel used for filling and repairing damaged tissues. The gel is characterized in that: medical-grade hyaluronic acid and chitosan are used as gel raw materials; the gel swelling ratio is 2-500; and a temperature sensitive temperature is 32-37 DEG C. The gel provided by the invention has the advantages that the injection temperature sensitive gel has physical and chemical properties of a general gel, also has injectable and temperature sensitive properties and a good fluidity at a room temperature and is easy for injection; the formability in organisms is good and the degradation is slow so that the general gel can not be compared; a cross-linking agent is not used for the gel so that harms of the cross-linking agent to a human body are avoided; a gel system can prolong a persistence time of the gel in a body, and also can continuously stimulate the body to produce reactions so that the tissue in-situ regeneration and repair is promoted and the filling quality is increased; and the gel simultaneously has the advantages of reducing bacterial invansion, anticoagulation and low allergic reaction and the like.

The invention relates to a magnetic thermometer nm particle with biocompatibility, which has biocompatibility, and double response properties of magnetism and thermometer property, and the particle diameter thereof is 20 to 60 nm, and the magnetic responsibility is strong, and magnetic saturation intensity is 10.0 to 27.0 emu / g. The synthetic method of the magnetic thermometer nm particle with biocompatibility comprises: firstly, adopting chemical coprecipitation method to prepare magnetic Fe3O4 nm particle, and using silane coupler to hold surface modification, and then using the modified magnetic Fe3O4 nm particle as a seed, and having polyreaction with dextran, N-isopropyl acrylamide, finally obtaining the magnetic thermometer nm particle with biocompatibility. The magnetic thermometer nm particle with biocompatibility synchronously has double responses of magnetism and thermometer property, and has wide application prospect in the fields of drug release, protein and enzyme separation.

The invention relates to the field of liquid heating, in particular to a dry heating prevention method of a liquid heating device and a heating device using the dry heating prevention method. The dry heating prevention method comprises the following steps that a temperature sensing part is used for detecting the temperature of the surface of a heating element and then transfers a temperature signal to a control unit, and the control unit calculates a temperature change rate of the surface of the heating element by two or more temperature spots so as to judge the working state of the heating element. Compared with the traditional method for judging the working state of the heating element by a single-spot temperature, the dry heating power-off time is not affected by the response delay of a temperature controller or a temperature sensor, so that the dry heating prevention method of a liquid heating device is more accurate in temperature control and can effectively prevent the heating element from being in a dry heating state for a long time. In addition, the temperature sensing part such as a thermistor or a thermocouple is used for directly detecting the temperature of the surface of the heating element so that the temperature sensing is fast and sensitive; and compared with the traditional metal temperature-sensing piece, the response delay time is greatly reduced so as to prevent the temperature of the heating element from being over-high and prolong the service life of the heating element.

The invention discloses injectable high-strength and temperature-sensitive modified chitin-based hydrogel as well as a preparation method and application thereof. The gel is characterized in that a temperature-sensitive chitin derivative is dissolved into a water system at low temperature and a crosslinking agent or a photoinitiator is introduced to form an injectable hydrogel precursor solution with good flowability; after the injectable hydrogel precursor solution is injected into a body, the injectable high-strength hydrogel is formed through spontaneous chemical crosslinking or light illumination crosslinking under physiological conditions. The hydrogel disclosed by the invention has abundant precursor material sources and is easy to prepare; the photoinitiator or the crosslinking agent, which has relatively good solubility and very low toxicity in water, is used. The temperature-sensitive chitin derivative is utilized and can be physically cross-linked and molded under the physiological conditions and is further subjected to chemical crosslinking or photocrosslinking to prepare the injectable high-strength hydrogel and the injectable high-strength hydrogel does not need to besubjected to any post-treatment. Furthermore, the hydrogel has biodegradability and can be widely used for fields including biomedical materials, tissue engineering technologies and the like.

The invention relates to a thermo-sensitive poly N-isopropylacrylamide / polyurethane medicine-loading electro-spun fibrous membrane and a preparation method thereof, relating to a medicine-loading electro-spun fibrous membrane and a preparation method thereof and aiming to solve problems of poor mechanical property of existing poly N-isopropylacrylamide medicine-loading electro-spun fibrous membrane and no temperature sensitivity of a polyurethane medicine-loading electro-spun fibrous membrane. The thermo-sensitive poly N-isopropylacrylamide / polyurethane medicine-loading electro-spun fibrous membrane is prepared by poly N-isopropylacrylamide, polyurethane, N,N-dimethylformamide and a medicine; the preparation method comprises the following steps: 1, preparing static spinning solution; 2, dissolving the medicine so as to obtain the static spinning solution containing the medicine; 3, carrying out electrospinning; and 4, carrying out dry treatment to obtain the thermo-sensitive poly N-isopropylacrylamide / polyurethane medicine-loading electro-spun fibrous membrane. According to the invention, the preparation method is mainly used for preparing the thermo-sensitive poly N-isopropylacrylamide / polyurethane medicine-loading electro-spun fibrous membrane.

The invention discloses a temperature-sensitive micro capsule as well as a preparation method and application of the temperature-sensitive micro capsule. The temperature-sensitive essence micro capsule consists of essence for cigarette as core materials and high-molecular materials as capsule materials, wherein the high-molecular materials consist of sodium alginate and polyethylene glycol. The preparation method comprises the following preparation steps that water solution of the sodium alginate and the polyethylene glycol is prepared, the stirring is carried out so that the uniform dispersion is realized, and air bubbles are removed; the prepared solution of essence for cigarette is extruded out from an inner pipe of a concentric material outlet, meanwhile, the water solution is extruded out from an outer pipe of the concentric material outlet, concentric linear fluid is cut through a rotary blade, fine particles are formed, and curing and drying are carried out in calcium ion salt solution. The temperature-sensitive micro capsule has the beneficial effects that the temperature-sensitive micro capsule has the advantages that the prepared essence for cigarette can be sealed in the capsule, and the essence is not released at the room temperature, so the essence can be stored for a long time without invalidation. The temperature-sensitive micro capsule has the advantages that the resources of used raw materials are wide, the price is low, and the preparation method is simple.

The invention relates to the technical field of biological materials, and particularly relates to thermo-sensitive chitosan derivative-hydroxypentyl chitosan and a preparation method of the hydroxypentyl chitosan. The invention provides the preparation method of the thermo-sensitive chitosan derivative-hydroxypentyl chitosan. The method comprises the steps of firstly carrying out alkali activation on purified chitosan, then taking 1,2-pentane oxide as an etherifying agent, taking isopropanol as a dispersed phase, carrying out mild reaction for 3-6 days at room temperature, participating with acetone and washing until a neutral state reaches after reaction, carriying out vacuum drying in at 50 DEG C to obtain the hydroxypentyl chitosan. The hydroxypentyl chitosan disclosed by the invention has water-solubility and thermosensitivity; the lowest critical solution temperature (LCST) is 17 DEG C (2%W / V), and the hydroxypentyl chitosan can be fast cured into a stable gel state from a liquid state at physiological temperature of 37 DEG C.

A biodegradable thermoplastic polymer masterbatch composition comprising a blend of at least one biodegradable thermoplastic polymer containing high loading of a particulate filler uniformly dispersed therein. The amount of the biodegradable thermoplastic polymer is generally from about 25% to about 50% by weight and the amount of the filler is from about 75% to about 50% by weight, based upon the total amount of one biodegradable polymer and the at least one filler. The uniform dispersion of the fillers is desirably obtained by adding small particles of the filler to a melt of the biodegradable polymer and blending using high shear equipment with special screw geometry. The masterbatch composition is then physically blended with additional biodegradable thermoplastic polymer and extrusion processed into final articles such as blown and cast films, molded products, and the like. The masterbatch multi-stage approach of the present invention results in a product that has improved physical properties and lower costs over that of a one step blend of the same amount of a biodegradable thermoplastic polymer and a filler that is subsequently heat formed into a final product.

An economic parameter estimator is provided for a process that has multiple process parameters (MPPs) and is performed to control emission of a pollutant into the air. The performance of the process is associated with one or more economic factors (EFs). The estimator includes either a neural network process model or a non-neural network process model. In either case, the model represents a relationship between one or more of the MPPs and an economic parameter. Also included is a processor configured with logic, e.g. programmed software, to estimate a monetary value of the economic parameter based on a value of each of the one or more MPPs, a value of each of at least one of the one or more EFs, and the one model.

The invention provides a poly(gamma-oligomerization ethylene glycol monomethyl ether-L-glutamic acid diethyl ester)-polyamino acid diblock copolymer and a preparation method thereof, and further expands the application of polyamino acid materials to the field of biological medicine. A structural general formula of the diblock polyamino acid is shown in the formula (I), wherein j is an integer from 1 to 10, m is an integer from 5 to 200, n is an integer from 5 to 200, R1 is an initiator end group, and R2 is an alpha-amino acid side chain group. The invention further provides a preparation method of poly (gamma-oligomerization ethylene glycol monomethyl ether-L-glutamic acid diethyl ester)-polyamino acid. The diblock copolymer not only is simple in preparation process and good in biocompatibility, but also has thermosensitive properties, and can be applied to the field of the biological medicine of targeted medicine delivery and the like.

A controller directs performance of a process having multiple process parameters (MPPs), including a controllable process parameter (CTPP), a targeted process parameter (TPP), a defined target value (DTV) representing a limit on an actual average value (AAV) of the TPP over a defined moving time period of length TPLAAV. A storage device stores historical data representing the AVs of the TPP at various times over a prior time period (PTP) having a length of at least TPLAAV. A processor predicts future average values (FAVs) of the TPP over a future time period (FTP) based on the stored historical data and the current values of the MPPs. The processor also determines a target set point for each CTPP based on the predicted FAVs, the current values of the MPPs and the DTV, and directs control of each CTPP in accordance with the determined target set point for that CTPP.

The invention discloses a flexible pressure-temperature integrated film array sensor sensitive element and a preparation method thereof. The pressure sensing function and the temperature sensing function are integrated by utilizing a piezoelectric effect and a pyroelectric effect of a flexible ferroelectric film, and the sensitive element comprises a flexible substrate, a functional film assemblyand a thermal management film assembly. In the method, an insulating layer and a lower electrode are sequentially deposited on a flexible substrate, a wire is connected, a flexible ferroelectric thinfilm is deposited and an insulating groove is etched, an upper electrode is deposited on the flexible ferroelectric thin film, the wire is connected, a thermal control layer, a thermal conductive layer and an infrared reflective layer are sequentially deposited, and finally the sensitive element is polarized and tested through the wire. The sensitive element of the invention realizes the integration of the pressure sensing function and the temperature sensing function on a single sensitive element, and has high integration level and simple use structure, is suitable for large-area preparation,suitable for plane, curved surface, special-shaped surface and other structures, high adaptability, and has the advantages of shock resistance, strong vibration ability, high bionic degree, high reliability and the like.

The invention discloses amino porphyrin-poly (N-isopropylacrylamide) europium coordination compound and a preparation method of the amino porphyrin-poly (N-isopropylacrylamide) europium coordination compound. The preparation method of the amino porphyrin- poly (N-isopropylacrylamide) europium coordination compound is characterized in that (NH2)n-TPP is prepared into an ATRP initiator which is NH2-TPP-X, wherein the X is halogen. The NH2-TPP-X is adopted to initiate NIPAM to be polymerized to obtain polymer which is (NH2)n-TPP-PNIPAM. The europium with tervalence is coordinated with the polymer (NH2)n-TPP-PNIPAM to obtain coordination compound which is (NH2)n-TPP-PNIPAM-Eu(III)-TTA through the TTA, wherein the n meets an equation that is n=1,2,3. The amino porphyrin- poly (N-isopropylacrylamide) europium coordination compound is characterized in that a short form of the amino porphyrin- poly (N-isopropylacrylamide) europium coordination compound is (NH2)n-TPP-PNIPAM-Eu(III)-TTA, wherein the TPP is tetraphenylporphyrin, wherein the shortened form of the tetraphenylporphyrin is porphyrin, the PNIPAM is the poly (N-isopropylacrylamide), the Eu(III) is the europium with the tervalence, and the TTA is alpha- thenoyltrifluoroacetone.

The present invention relates to a three-way automatic temperature control valve capable of utilizing medium self-body temperature to control opening and closing of high-temperature medium channel and low-temperature medium channel of valve. Said three-way automatic temperature control valve includes the following components: valve body, low-temperature hole valve seat, high-temperature hole valve seat, low-temperature hole valve flap, high-temperature hole valve flap, regulation screw ring, temperature-sensing element, pushing bar and reset spring, etc.

The invention discloses a preparation method of nano-silver-carrying PNIPAM / PVA composite thermosensitive gel. PNIPAM / PVA thermosensitive hydrogel prepared with a free radical polymerization method is used as a reducing medium, and silver nanoparticles are reduced in a network structure of the hydrogel; the finally prepared material is used as the substrate of SERS and soaked in crystal violet probe molecular solutions with different concentrations for a certain time; then the substrate material with probe molecules adsorbed on the surface is taken out, placed on a slide for airing and used for Raman detection. The hydrogel in the gel is used as a dispersion stabilizer and can play a role in support protection for electromagnetically enhanced nano-silver particles; when the gel is adopted as the substrate for detecting crystal violet at the room temperature, the detection limit can reach 10<-9> orders of magnitude, and the fact that the intensity of a Raman signal varies with temperature is also found. The disclosed SERS substrate adopts simple preparation method and is good in temperature response and has broad application prospect in fields of food additives, pesticide detection, sensing and the like.

The invention discloses a preparation method of a multi-responsive azobenzene functionalized polymer. The preparation method comprises the following steps: synthesizing a polymer of poly-dimethylaminoethyl (meth)acrylate by virtue of atom transfer radical polymerization reaction of a polymer monomer of dimethylaminoethyl methacrylate; synthesizing azobenzene small-molecule m-trifluoromethylazophenol with phenolic hydroxyl by virtue of diazo reaction by taking m-trifluorotoluidine and phenol as raw materials; then performing nucleophilic substitution with dibromobutane to generate azobenzene small-molecule 3-trifluoromethyl-4-brombutylazobenzene containing active bromine at one end; and performing quaterisation at 35 DEG C to graft azo groups to poly-dimethylaminoethyl (meth)acrylate to finally obtain azobenzene functionalized poly-dimethylaminoethyl methacrylate. The synthetic method disclosed by the invention is simple and feasible, the reaction temperature is lower than the conventional reaction temperature, and the synthesized polymer not only has temperature responsive property and pH responsive property but also has light responsive property, so that the polymer is a novel polymer with temperature, pH and light responsive properties.

The invention belongs to the field of a biological medical polymeric material and relates to a preparation method of biodegradable supermolecular hydrogel with high strength. The preparation method is that firstly, Pluronic block copolymer and stannous octoate are used as coinitiator to initiate Epsilon-caprolactone monomer ring-opening polymerization and acrylate or methacrylate is terminated to obtain a photopolymerisable macromonomer. Then, macromonomer solution which is mixed with micro-photo initiator is mixed with Alpha-cyclodextrin solution of certain concentration to rapidly form the precursor of supermolecular physical gel. The precursor of physical gel can rapidly form the supermolecular hydrogel with high strength in situ after the irradiation of ultraviolet. The preparation method of the invention relates no organic solvent, cross linking agent and related reaction. The preparation method is simple and can be applied rapidly. And the strength and the temperature responsive property of the supermolecular hydrogel can be regulated and controlled. The obtained biodegradable supermolecular hydrogel with high strength can be widely applied to the field of the biological medical engineering material.

The invention discloses a preparation method for a temperature-sensitive hydrogel / silver nanocomposite. The preparation method comprises the following concrete steps: (1) dissolving chitosan in an acetic acid solution to prepare a solution with a concentration of 1 to 10%, preparing an aqueous reactant solution from a temperature-sensitive monomer and a chemical cross-linking agent and adding the aqueous reactant solution into the above-mentioned solution; (2) adding an aqueous initiator solution into the aqueous reactant solution, introducing nitrogen for protection, heating to a temperature of 50 to 80 DEG C, carrying out a reaction for 6 to 12 h under the condition of uniform-speed stirring and carrying out washing and drying so as to obtain a temperature-sensitive chitosan hydrogel; and (3) subjecting the dried hydrogel to full swelling in distilled water for 1 to 3 d, adding a silver salt, adding a reducing agent for a reaction for 2 to 5 h and carrying out purifying and drying so as to obtain the hydrogel / silver nanocomposite. The preparation method provided by the invention has the advantages of simple process and mild reaction conditions. The hydrogel / silver nanocomposite prepared in the invention has stable physical and chemical performances and temperature sensitivity.

The invention discloses a thermo-sensitive coding microsphere carrier for drug controlled release and a preparation method of the microsphere carrier. The carrier is a hydrogel microsphere with an inverse opal structure. The main component of the microsphere is poly(N-isopropylacrylamide), which has a three-dimensional ordered nanometer porous structure for carrying multiple protein or polypeptide medicines. Contraction and expansion of nanometer holes can be controlled through temperature regulation, so that drug controlled release is achieved. The inverse opal hydrogel microsphere is prepared by taking a colloidal crystal microsphere as a template. The carrier is simple in preparation method, low in cost and convenient for large-scale production. The prepared coding carrier is non-toxic and is good in biocompatibility and controllability.

The invention relates to the field of environmentally sensitive high polymer materials, in particular to a preparation method for a micro hydrogel capable of detecting various heavy metal ions in water. The preparation method for the micro hydrogel comprises the following steps: dissolving M1, M2, M3 and an initiator in water, performing the free radical copolymerization reaction under an oxygen free condition at 60-90 DEG C, adding an N,N-dimethyl formamide solution of M4 after 20 minutes of the copolymerization reaction, and continuously reacting for 6-24 hours; after the completion of the copolymerization reaction, dialyzing the obtained finished product for a week to obtain the purified ion micro hydrogel. Through the adoption of the micro hydrogel provided by the invention, various metal ions such as copper, nickel, zinc, cobalt, iron, lead, manganese, aluminum, chromium and barium of which the concentrations are at the grade of micron can be effectively identified visually; the preparation method and the reaction operation are simple, an emulsifier is not needed, the purification process is convenient, the process is simple and controllable, and the preparation method is suitable for industrialized production.

The invention provides a method for removing aflatoxin out peanut oil. The method comprises the following steps: A, selecting materials; B, grading and screening peanuts; and C, feeding and squeezing oil, The method is characterized in that aflatoxin is removed by means of a compound enzyme in the step C, wherein the compound enzyme consists of phospholipase A1, laccase, neutral proteases, xylanases by adding phospholipase A1, laccase, neutral proteases and xylanases respectively according to proportions of 0.3g / kg, 0.2g / kg, 0.5g / kg and 0.1g / kg; then hydrolysis is carried out at 42 DEG C for 5-6 hours; and finally the pH of hydrolyzate is adjusted to 6.8. According to the method, aflatoxin is removed by a biological method, reaction conditions are mild and operation is simple, aflatoxin content meets national standards, and the method disclosed by the invention has a broad application prospects.

The invention discloses a thermo-sensitive and degradable micro hydrogel as well as a preparation method and application thereof. The structure of the micro hydrogel is shown as a formula M3 in the specification. In the formula M3, m represents the repetitive unit number of L-lactic acid, n represents the repetitive unit number of glycol, m=9-21, and n=23-69. The preparation method comprises the following step of conducting radical copolymerization reaction and interlinking reaction on N-alkyl acrylamide, a degradable double-bond blocked cross-linking agent of a poly(L-lactic acid)-polyethylene glycol-poly(L-lactic acid) triblock copolymer and an initiator. The preparation method is simple and easy to control. The obtained micro hydrogel has dual performances of thermo-sensitivity and degradability, high purity and excellent stability. The micro hydrogel can be used in the fields of biological medication and medicine controlled slow release.

The invention provides a preparation method of a temperature-sensitive gel. The preparation method comprises the following steps: dispersing liquid metal, N-isopropylacrylamide and derivatives thereof, a cross-linking agent and an initiator in a medium to obtain a mixed solution; and enabling the mixed solution to form a prefabricated body on a carrier, and carrying out first curing treatment. Thetemperature-sensitive gel can respond to the change of the external temperature, and when the external temperature reaches a preset temperature T2, the liquid metal dispersed in the first polymer isswitched between a continuous phase and a dispersed phase. The prepared temperature-sensitive gel has a negative temperature effect and can realize electric conduction when the external temperature reaches the preset temperature T2; and the liquid metal has good conductivity and heat transfer performance, so that the temperature-sensitive gel has high sensitivity. The invention also provides the temperature-sensitive gel prepared by the preparation method, a temperature-sensitive sensor and a preparation method of the sensor.

A preparation method of a PDMS film with thermosensitivity comprises the following steps: carrying out rotary evaporative concentration on aqueous-phase cadmium telluride quantum dots prepared by a hydrothermal method, carrying out purification treatment by settling with isopropanol, dispersing the purified product in anhydrous ethanol, uniformly dispersing the cadmium telluride quantum dots in a PDMS prepolymer through the affinity interaction between the PDMS prepolymer and aqueous-phase quantum dots, mixing and curing by adding a curing agent, so as to obtain optically transparent PDMS film with thermosensitivity. The raw materials used in the invention are easily available, required experimental equipment is simple, and the technological process is easy to master. By the preparation method, a thermosensitive PDMS film having uniform euphotic layer and with good film-forming ability can be prepared.

The invention relates to technical field of degradation catalysis of pollute substance of waste water, in particular to a thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and a preparation method thereof. An existing metalloporphyrin visible light degradation catalyst is bad in water-solubility and difficult to recycle. According to the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and the preparation method thereof, the light degradation catalyst is a star-shaped polymer, wherein divalent metal ions of the light degradation catalyst is Zn divalent metal ion, Co divalent metal ion or Fe divalent metal ion, and the molecular weight of the light degradation catalyst is ranged from 2000 to 15000. The preparation method of the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst is an atom transfer radical polymerization method which comprises the following steps of: firstly, reaction between 5, 10, 15, and 20-4-hydroxyphenylacetic acid phenyl group porphyrin and metal acetate and generation of porphyrin metal complex, then, halogenating reaction between the porphyrin metal complex and halide and obtaining of atom transfer radical polymerization initiator, and thirdly atom transfer radical polymerization of N-isopropyl acryamide monomer initiated by the initiator and obtaining of an end product, namely the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst. The prepared catalyst is good in water-solubility, capable of adapting to aqueous medium waste water degradation system, and capable of being recycled completely, simply and without being damaged.