126results about How to "Polymerization conditions are mild" patented technology

The invention discloses a sticky high-mechanical-strength nano hybrid hydrogel and a preparation method thereof. The sticky hydrogel is obtained by polymerizing an acrylamide or N-alkyl substituted acrylamide derivative in aqueous dispersion of an inorganic nano crosslinking agent namely of laponite, polyvinyl alcohol and cyclodextrin, has high mechanical strength and stickiness and can adhere to surfaces of skins, metals, glasses and ceramics. The preparation method of the sticky hydrogel comprises the following steps: dispersing the inorganic nano crosslinking agent namely laponite and a monomer into water, and stirring to obtain uniform and transparent dispersion; adding polyvinyl alcohol into a reaction mixed solution, and stirring uniformly; then adding the cyclodextrin into the reaction mixed solution, and stirring uniformly; adding an initiating agent at last; and filling a mold with the reaction solution, sealing the mold, and putting the mold into an environment of 20-25 DEG C for reaction for 12-48 hours to obtain the sticky high-mechanical-strength nano hybrid hydrogel, wherein the tensile strength of the hydrogel is more than or equal to 100kPa, and the adhesive strength is more than or equal to 10kPa.

The invention discloses a method for preparing a graphene organic dispersion solution from hyperbranched polyethylene, which comprises the following steps: (1) proportionally mixing graphite powder, organic solvent B and hyperbranched polyethylene, and then performing ultrasonic dispersion on the obtained mixture to obtain a graphene initial dispersion solution C; and further performing low-speed centrifugation and standing treatment to obtain a graphene dispersion solution D containing excessive hyperbranched polyethylene, wherein the organic solvent B is selected from one of the following chemically pure or analytically pure agents: tetrahydrofuran, trichloromethane, n-heptane, chlorobenzene and dichloromethane; and (2) performing ultra-high-speed centrifugation or vacuum filtration on the graphene dispersion solution D obtained in the steps (1) to remove the contained excessive hyperbranched polyethylene, and further performing ultrasonic dispersion in the organic solvent B to obtain the graphene organic dispersion solution. The preparation process causes less damage to the surface structure of graphene; and the obtained graphene is low in surface defect concentration and can better take the performance advantages.

The invention provides a preparation method of star-shaped solution polymerized butadiene styrene rubber (SSBR) with wide molecular weight distribution. The star-shaped SSBR is prepared through adopting a combined initiator system comprising an organic monolithium compound and a silicon lithium initiator, adding the initiator system in a multi-time dropwise mode, and carrying out a coupling reaction by adding a coupling agent in a multi-time adding mode after finishing polymerization. The star-shaped SSBR with wide molecular weight distribution, which can be processed under common conditions without adding low molecular weight polymers to improve the processing performance of the star-shaped SSBR and has the advantages of good tensile strength, balanced comprehensive mechanical property, good dynamic mechanical property, and combination of two properties of wet skid resistance and rolling resistance, is special rubber for tyres which has excellent properties. The star-shaped SSBR can be filled with carbon black, liquid rubber and the like, so the cost can be further saved, properties of rigidity, hardness and wear resistance of rubber products are improved, and the shrinkage of the rubber products is reduced, thereby the star-shaped SSBR can be widely applied to the shoemaking industry, the tyre industry and other industries.

The invention relates to a preparation method for polyvinylidene fluoride with high molten fluidity. The initiator used for the polymerization is an organic initiator comprising organic hydrogen peroxide and organic peroxide with a molar ratio of 1-5, and the used conditioning agent is an ester conditioning agent with high dispensing efficiency for the system; the addition way of the initiator and the conditioning agent is a continuous addition way; the polymerization condition is mild; the polymerization product has a stable end group and a moderate molecular weight with a narrow distribution coefficient; and the product has high molten fluidity, good thermochemical stability, and significantly improved mechanical properties and weatherability.

The invention discloses a near-infrared-light-responsive intelligent aquagel bionic arm and a preparation method thereof. The aquagel bionic arm is formed by connecting three aquagels with different functions by in-situ free-radical polymerization, wherein the three aquagels are respectively a I-extension section, a II-contraction section and a III-grabbing section. The aquagel bionic arm can capture the target object under the action of viscosity or magnetism. The intelligent aquagel bionic arm can implement the bionic actions of extension, object capturing and retrieval under the irradiation of near-infrared light. The preparation method comprises the following steps: respectively dispersing the three aquagel components in water, adding an initiator, adding the three aquagels into a mold according to the sequence of I-II-III or III-II-I, sealing, and reacting in a 10-25-DEG C environment for 12-48 hours to obtain the near-infrared-light-responsive intelligent aquagel bionic arm.

The invention relates to a macromolecular-chain double-terminal functionalized modified butadiene-isoprene copolymer rubber. According to the invention, a functionalized initiator and an end-capping method are combined, so that the two ends of the molecular chain contain different functional groups at the same time, the two ends have good bonding force with carbon black / white carbon black; one end employs an organic lithium initiator of a protective group, so that the molecular chain contains [-Si-(OR)3], nano dispersion of a filling material in a rubber matrix can be realized; the other end contains a (-NR1R2) group, is good for mutual effect with carbon black, so that the dispersion of carbon black in the rubber matrix can be promoted. At the same time, effect between two ends of the molecular chain and carbon black / white carbon black reduce the free degree of a chain link between a final junction point in the rubber network and chain terminal, elastic recovery of a whole crosslinking network can be effectively joined, energy loss in periodical deformation is reduced, and heat and rolling resistance are improved. The double-terminal functionalized butadiene-isoprene copolymer rubber has excellent low temperature performance, and can increase the strength and dynamic mechanical property.

The invention discloses a preparation method of a silicon-based negative electrode binder of a lithium battery and the binder. The preparation method comprises the following steps: firstly, polymerizing an iodine-transfer active radical fine emulsion to prepare a polyacrylate seed emulsion, then adding styrene monomers for further polymerization, and finally, carrying out partial hydrolysis on theblock copolymer under an alkaline condition to obtain the polyethylene-polyacrylate-polyacrylic acid-polystyrene block copolymer binder. According to the invention, the preparation process is simple,the polymerization conditions are mild, the molecular weight and composition regulation of the block copolymer are convenient, the performance is controllable, the prepared binder can be used for greatly enhancing the binding force between powder granules and a current collector and the binding force among the powder granules, and the problems of volume expansion and the like in charging and discharging processes of the battery when a silicon material is used as an active substance can be relieved. In addition, the binder has good electrical conductivity and low internal resistance and can beused for preparing the silicon-based negative electrode of the lithium battery, so that the lithium ion battery has excellent electrochemical performance.

The invention discloses bio-based film-forming resin and photoresist prepared by the same. The bio-based film-forming resin is prepared by styrene derivatives and cholic acid derivatives through freeradical polymerization reaction and alcoholysis reaction. The bio-based film-forming resin is mixed with a photo-acid generator, auxiliaries, a solvent and the like to prepare the 365nm and 248nm photoresist. The bio-based film-forming resin has the advantages that polymerizable monomers containing natural product cholic acid are introduced into conventional poly(p-hydroxystyrene) film-forming resin to form the new improved film-forming resin, the new film-forming resin can increase the ultraviolet transparency of the photoresist and increase the photosensitivity of the photoresist, and the large cyclic structure of the film-forming resin can increase carbon compactness, reduce the free volume of polymerization chains, increase heat resistance and increase the etching resistance of the film-forming resin; large lateral chains can improve the problem of acid diffusion, increase dissolution difference and lower image edge roughness.

The invention relates to a preparation method of branched polystyrene-maleic anhydride, comprising the steps of: (1) under normal pressure, dissolving p-vinylbenzyl mercaptan, styrene, maleic anhydride, and an initiator for free radical polymerization in a polymerization solvent; (2) under stirring, heating the solution obtained in step (1) to a temperature of 30-40DEG C and introducing nitrogen to the solution, sealing the reaction container, keeping stirring, raising the temperature of the solution to 65-80DEG C and preserving the heat for a reaction of 10-24h; (3) after the reaction, conducting pumping filtration to the solution obtained in step (2), leaching the solid from filtration with a hot precipitating agent, then dissolving the solid in an organic solvent, filtering out insoluble impurities therein, conducting precipitation and pumping filtration to the obtained solution in a precipitating agent, subjecting the solid obtained from filtration to dissolution, precipitation and pumping filtration, and carrying out vacuum drying to the generated solid. According to the invention, the polymerization conditions are mild, the polymers have controllable structural performance, and the polymerization product has excellent performance, simple and convenient preparation operations, as well as good application.

The invention provides a stimulus-response type polypyrrole nanotube targeting drug carrier and a preparation method. A titanium dioxide nanotube array or a porous anodic alumina array serves as a template, and a polypyrrole nanotube is prepared through chemical vapor deposition; beta-cyclodextrin and a tube opening of a polypyrrole nanotube are connected through stimulus response type sensitive bonds such as acyl hydrazone bonds and disulfide bonds, and medicine can be blocked in the nanotube and released out in the faintly acid and reducibility environments; one end of a polyethylene glycol chain is connected with a folic acid targeted molecule, the other end of the polyethylene glycol chain is connected with an adamantane head base, the adamantane head base is linked up to a beta-cyclodextrin hydrophobic cavity through host and guest envelope, and folic acid molecules recognize tumor cells through a receptor-ligand medium. The stimulus-response type polypyrrole nanotube targeting drug carrier prepared through the method is uniform in particle diameter size distribution, controllable in appearance, stable in product, simple in synthesis process, low in cost and suitable for mass production.

A supported Pd catalyst adopting nanocarbon as a carrier, preparation thereof and applications of the catalyst are disclosed. The supported Pd catalyst comprises the nanocarbon carrier, a polymer covering layer on the surface of the nanocarbon carrier and Pd nano particles distributed on the surface of the polymer covering layer. The nanocarbon carrier is carbon nanotubes or graphene. The polymer covering layer is formed by polymerization of aliphatic cycloolefin on the surface of the nanocarbon carrier. The supported Pd catalyst has characteristics of mild preparing conditions, a simple process and a controllable and adjustable structure, can be used for Heck or Suzuki coupling reactions, and has advantages of high catalytic activity, easy separation and recovery, good cyclic using stability, and the like.

The invention relates to a method for preparing N-isopropyl acrylamide / multi-walled carbon nanotube composite microgel through in situ polymerization in a microreactor. The method comprises the following steps of: (1) preparing modified multi-walled carbon nanotubes; (2) dispersing modified multi-walled carbon nanotubes into N-isopropyl acrylamide, N,N'-methylene bisacrylamide and distilled water solution of ammonium persulfate serving as dispersed phases, and taking N,N,N',N'-tetramethyl ethylene diamine and edible oil as solution of continuous phases; and (3) loading the dispersed phases and the solution of continuous phases into a syringe respectively, putting the syringe on two boost pumps, and connecting microchannel reactors to generate liquid drops having uniform sizes; and carrying out polymerization reaction for 1 to 3s in water bath at the temperature of between 40 and 60 DEG C, and collecting and washing the microgel. The method has the advantages of simpleness, mild polymerization condition, short reaction time of between 1 and 3s, and suitability for industrialized production; and the prepared microgel has uniform particle sizes, the sizes of polymer microspheres are controlled by regulating the flow velocity of the dispersed phases and the solution of continuous phases, and the particle sizes are between 500 and 1,000 mu m.

The invention belongs to the fields of high polymer chemistry and material science, and discloses a poly(allyl ether) compound, and a preparation method and application thereof. The method comprises the following steps: (1) performing polymerization reaction on a binary propinyl compound and a binary hydroxyl compound in organic solvent in an inert gas protective atmosphere to obtain a crude product; and (2) performing post-treatment on the crude product to obtain the poly(allyl ether) compound. The poly(allyl ether) compound has a structure shown in Formula (I), wherein n is an integer of 2-200, and R2 is a same or different organic group. The method disclosed by the invention has the advantages of mild conditions, simple and accessible polymerizable monomers, high polymer yield, high molecular weight, high atom economy and excellent regioselectivity; and the poly(allyl ether) compound disclosed by the invention has excellent processability and high thermal stability. The Formula (I) is shown in the specification.

The invention relates to a preparation method for coating of nano-silica through miniemulsion polymerization, which relates to the technical field of atom transfer radical polymerization and miniemulsion polymerization. The preparation method comprises the following steps: preparing a macroinitiator to modify the surface of a monomer, removing a solvent and a catalyst and then preparing a graft copolymer from the brominated monomer and a silane coupling agent through the ATRP method; and individually using the copolymer prepared above as a co-stablizer or a silane coupling agent for miniemulsion polymerization so as to finally prepare a stable emulsion particle with narrow particle size distribution and to meet requirements for coating of nano-silica. The preparation method provided by the invention has the advantages of safe process, simple operation and improvement of the characteristic of great possibility of agglomeration of nano-silica caused by a great specific surface area and high surface energy of nano-silica; and with the preparation method, the nano-silica particle with uniform particle size distribution and uniform dispersion is obtained, and the nano-silica particle is better compatible with a polymer.

The invention relates to a preparation method of polyvinylidene fluoride resin for a solar backboard film. According to the method, an initiator for polymerization is an organic lipoperoxide initiator being low in reaction activation energy, and an adjustor for polymerization is low molecular weight ester with high adjusting efficiency, wherein the concentration of the initiator is 10-30% and the concentration of the adjustor is 5-30%. The continuous feeding manner is adopted, the polymerization condition is mild, the temperature is 64.5-66.5 DEG C, the pressure of a kettle is 2.95-3.15MPa, the end group of a polymerization product is stable and the molecular weight of the polymerization product is controllable in size, and the distribution coefficient is narrow. The obtained polyvinylidene fluoride product cannot be yellowed, is free from big crystal points and can satisfy the demand on technical indexes of the solar backboard film.

The invention relates to a sulfhydryl chain transfer hyperbranched polymerization process belonging to the technical field of polymer synthesis and functional polymer preparation. In the invention, styrene monomer containing alkyl sodium (potassium) thiosulfate taken as a branched monomer, other ethenyl monomers taken as main polymeric monomers, dimethyl sulfoxide (DMSO) or N-N'-dimethyl formamide (DMF) taken as polymeric solvent and radical initiator as polymeric initiator undergo polymeric reaction under the thermal initiation condition; active sulfhydryl released by the alkyl sodium (potassium) thiosulfate under the action of DMSO, the DMF or any other strong polar reagent is used for chain transfer branched reaction so as to achieve the purpose of preparing hyperbranched polymer; and the branched structure of the hyperbranched polymer is adjusted through adjusting the molar ratio, the polymeric reaction time and the polymeric reaction temperature of the branched monomer, the main polymeric monomers, the radical initiator. The sulfhydryl chain transfer hyperbranched polymerization process has the advantages of simple and available branched monomer, mild polymeric condition, controllable branching coefficient, strong applicability to various monomers, and the like.

The invention discloses a branched modifier having the structure shown in the formula (VII), wherein R2-R7 are the same or different and are independently hydrocarbonyl or substituted hydrocarbonyl containing 1-20 carbon atoms, the substituted hydrocarbonyl is hydrocarbonyl containing terminated carboxyl or terminated amino, and at least one of R2-R7 is substituted hydrocarbonyl containing terminated carboxyl or terminated amino. The invention also provides a flame retardant nylon resin, a reactive flame retardant and diamine or dicarboxylic acid form a salt with equal mole ratio, the obtained salt solution is mixed with a nylon polymeric monomer and the branched modifier, and then a polycondensation reaction is carried out to obtain the flame retardant nylon resin. The flame retardant nylon resin has the characteristics of no halogen, environmental protection, no dripping during combustion, high flame retardant efficiency, high flame retardant grade, permanent flame retardancy and no migration.

The invention discloses a soluble benzenetetracarboxylic diimide group-containing full-conjugated polymer and a preparation method thereof. The structural formula of the full-conjugated polymer is as the follow, wherein R1 is alkyl, R2 is hydrogen or trifluoromethyl, and n is more than or equal to 1. The preparation method comprises: adopting dibromobenzene tetracarboxylic diimide and 1,4-diethynylbenzene or a derivative of the 1,4-diethynylbenzene are adopted as monomers, and a copolymerization reaction is performed under a Heck reaction condition to obtain the full-conjugated polymer. Compared to the prior art, the polymer of the present invention has the following advantages that: the strong electron-deficient benzenetetracarboxylic diimide group is introduced in the molecule of the polymer, such that the polymer has low HUMO energy level, and the electrophilic capacity of the polymer is strong; the triple bond is introduced in the polymer, such that the steric hindrance between the donor unit and the receptor unit is reduced, the polymer is regularly aligned, and the electron mobility rate of the field effect transistor device containing the polymer of the present invention can be improved, therefore, wide application prospects are provided for the fields of polymer field effect transistors, thin film transistors and the like.

A preparation method of amphiphilic photoelectric active branched macromolecules belongs to the field of macromolecular polymerization. The preparation method comprises the following steps: (1) under normal pressure condition, 7-(4-vinyl benzyloxy)-4-methylcoumarin, N-(4-vinyl benzyl)-9H-carbazole, 4-vinyl benzyl mercaptan, maleic anhydride, a radical initiator and a solvent are placed in a 250ml four-neck flask; (2) nitrogen is introduced into the container in the step (1) for 30 min, sealed stirring is carried out to fully dissolve the nitrogen, solution temperature rises to 65-70 DEG C and a thermostatic reaction is carried out for 24h; and (3) after the reaction, the solution obtained from the step (2) is precipitated in a precipitating agent and undergoes suction filtration, and a solid obtained after filtration undergoes dissolution, precipitation and suction filtration repeatedly for 3 times, and the solid obtained finally undergoes vacuum drying to constant weight. According to the invention, polymerization conditions are mild, and the preparation method is simple to operate. The polymer obtained can be used to remarkably raise dispersion stability of carbon nano-tube in an aqueous solvent.

The invention relates to the field of fuel cells, in particular to an anion exchange membrane with a strong rigid structure and a preparation method and application thereof. In order to improve the conductivity and the stability of hydroxyl, p-quaterphenyl is polymerized with different aryl monomers and ketone monomers, the main chain of p-quaterphenyl is composed of a high-molecular-weight ether-bond-free, rigid and hydrophobic aryl skeleton, positive ions with high alkali stability are combined, and the high rigidity of p-quaterphenyl is reserved. The obtained anion exchange membrane of the polyarylene piperidine homopolymer or copolymer has relatively high ionic conductivity, relatively good crystallinity, good stability and strong rigidity, can be made ultrathin and has certain stiffness, and the ion exchange membrane has a good application prospect in the field of fuel cells.

The invention discloses a polythiourea compound and a preparation method and application thereof. The method comprises the following steps: reacting an amine compound monomer, an isonitrile compound monomer and carbon disulfide in an organic solvent, and carrying out post-treatment to obtain the polythiourea. The monomers used in the invention are all industrial raw materials, the cost is low, and large-scale gram-level production can be carried out; the utilization rate of reaction atoms is 100%, and no toxic or harmful by-product is generated; the reaction can be carried out under the conditions of room temperature and air, the operation is simple, and the polymerization reaction yield is high; the product is easy to separate, and a polythiourea product and another thioformamide product can be obtained in one pot; symmetrical polythiourea, asymmetrical polythiourea with a controllable sequence and polythiourea with a disordered structure can be prepared by adjusting the feeding type, mode and proportion; the obtained series of polythiourea also has excellent self-repairing performance and luminescence performance, can be applied to the field of self-repairing and the field of photoelectric devices, and promotes further development of polythiourea compounds.

The invention discloses a preparation method of an intermediate dimethoxy carbonic acid bisphenol A diester. The intermediate is used for synthesis of polycarbonate. The preparation method is characterized in that DMC micromolecular carbonic ester and BPA are used as raw materials to react in the presence of an organo tin catalyst at the temperature of 140-250 DEG C and at normal pressure or high pressure for 0.5-48h so as to obtain a crude intermediate product; and the high-purity polycarbonate intermediate is prepared by an alcohol / water mixed solvent recrystallization method. The organo tin catalyst comprises (Ar)2SnX2, (Ar)2Sn(OH)X, (Ar)2SnO, R(Ph)SnO, R2SnX2, R2Sn(OH)X or R2SnO. The feed mole ratio of DMC to BPA is 2-20. The mass ratio of the organo tin catalyst to bisphenol A is 5 per thousand-10%. The alcohol / water mixed volume ratio is 1-3.

Disclosed is a pigment dispersion containing at least a pigment, a liquid medium and a high-molecular dispersant. The high-molecular dispersant is a block polymer represented by A-B or A-B-C, in which A, B and C each represent a polymer block and the A and C blocks may be the same or different. The block polymer and its production process are also disclosed. The high-molecular dispersant is free of problems of a smell, coloration, a heavy metal and cost, and its use can provide a pigment dispersion excellent in the dispersion stability of a pigment.

The invention discloses a preparation method of branched poly (p-hydroxystyrene). The preparation method comprises the steps: firstly, through simple free radical polymerization, with ethenylphenol acetate as a polymerization unit and vinyl benzyl mercaptane as a chain transfer monomer, preparing branched poly(p-ethenylphenol acetate) in a tetrahydrofuran solution, and then performing deacetoxylation on the branched poly(p-ethenylphenol acetate) to prepare the branched poly (p-hydroxystyrene). The polymerization process is easy to control and is capable of controlling the molecular weight of a polymer through adjusting the reaction time and the content of the chain transfer monomer.

The invention discloses a method for quickly functionalizing graphene with covalent polystyrene, wherein the polystyrene is covalently bonded to the surface of the graphene by using a mild and high-efficiency method and is subjected to functionalizing modification. The method comprises the following steps: preparing oxidized graphene by using a Hummers method, preparing alkynylation graphene, preparing polystyrene by an RAFT method, and finally preparing polystyrene covalent functionalizing graphene by using a click chemistry method. The click chemistry method is a new method for realizing material chaining and has the advantages that the reaction operation is simple, the reaction conditions are mild, the reaction has stereoselectivity, products are easy to separate, the post-treatment is simple, the side reactions are a few, and the reaction recovery rate is high. Based on experiments, the prepared polystyrene covalent functionalizing graphene has excellent compatibility in organic solvent, can be directly used as a nano composite material and also can be used as a filler to reinforce a polymer material.

The invention relates to a water-soluble fluorine-containing modified N-NVP polymer and a preparation method thereof. The preparation method comprises the step: N-NVP and DFMA are subjected to a polymeric reaction to obtain the compound shown as the formula (I). According to the invention, as a fluorine-containing hydrophobic alkyl side chain is introduced to the water-soluble N-NVP polymer, the N-NVP polymer has the advantages of excellent hydrophobic association property, high surface activity, and excellent salt, temperature and shear resistant properties, can serve as a macromolecular surfactant, and meanwhile has a high utilization potentiality in the fields of oil exploitation, paints, medicines, daily chemicals and the like.

The invention discloses a method for method for preparing a sulfur and / or selenium-containing sequence controllable polymer through a one-pot method and a product thereof. The method comprises the following steps: taking elemental sulfur or elemental selenium, asymmetric amine and isonitrile, and adding an organic solvent in the presence of protective gas, so that high-activity amine groups of the asymmetric amine are subjected to a prepolymerization reaction; continuously adding elemental sulfur or elemental selenium and isonitrile, so that the low-activity amine group of the asymmetric amine is subjected to polymerization reaction; and cooling the reaction system to room temperature after the reaction is completed, diluting the reaction mother liquor with an organic solvent, then adding the diluted reaction mother liquor into a precipitator for precipitation, collecting the precipitate, and drying the precipitate at room temperature to constant weight to obtain the sulfur and / or selenium-containing sequence controllable polymer. The preparation method of the sequence controllable polymer has the advantages of easily available reaction raw materials, mild polymerization conditions, simple process, high polymerization efficiency and abundant and clear product structure.

The invention discloses a branched poly (p-hydroxystyrene) copolymer used for 248nm photoresist, and a preparation method thereof. The preparation method comprises following steps: simple free radical polymerization is adopted, 4-acetoxystyrene and tert-butyl acrylate are taken as polymerization monomers, 4-vinyl benzyl mercaptane is taken as a chain transfer monomer, a branched poly (p-acetoxy styrene) copolymer is prepared via precipitation polymerization in absolute methanol; and the branched poly (p-hydroxystyrene) copolymer with protecting groups is obtained via partial deacetylation oxidation of the branched poly (p-acetoxy styrene) copolymer. The raw materials are widely available and cheap; operation of the polymerization process is simple; reactions are easy to control; polymer molecular weight can be controlled via adjusting reaction time and the content of the chain transfer monomer; the branched poly (p-hydroxystyrene) copolymer is high in photopermeability, excellent in heat resistance and etching resistance, and weak in inter molecule chain entanglement, so that it is possible to improve distinguishability performance of 248nm photoresist.

The invention discloses a preparation method of a polymerization degree-controllable cellulose-based heavy metal ion absorbent. The method comprises the following steps: sufficiently dissolving cellulose in a mixed solution of anhydrous lithium chloride and polar solvent by utilizing a microwave method, then enabling the cellulose to react with an amide polymer by virtue of an ARGET ATRP method, thus obtaining the cellulose-based heavy metal ion absorbent. The preparation method is short in time consumption and simple in process, and capable of overcoming the weaknesses of a nonhomogenous grafting copolymerization method for preparing the cellulose absorptive heavy metal material that the actual consumption is large, the production process is long, the reaction is difficult to control, andthe product is non-uniform. By adopting the method disclosed by the invention, the heavy metal residue problem can be maximally solved, the requirement on the catalyst is extremely low, and the method is an ideal way of the ATRP extension method with the least residual amount of the catalyst. The basic raw material of the invention is from agricultural and forestry waste, so that the preparationmethod has the advantages of low cost, biodegradability, and renewability, and is a method for utilizing the biomass resource in a high-valuation manner.

The invention relates to the field of preparation of high polymer materials, in particular to wholly aromatic high-temperature-resistant nylon as well as a preparation method and application thereof. The copolymerized high-temperature-resistant nylon disclosed by the invention is formed by carrying out copolycondensation on meta-aromatic diacid and meta-aromatic diamine with relatively high reaction activity; on the other hand, a certain amount of high-temperature-resistant branching auxiliary agent is introduced into a polycondensation system, and the wholly aromatic high-temperature-resistant nylon with relatively high relative viscosity and better melt flowability and processability is prepared through prepolymerization and solid-phase tackifying, and has obvious advantages in preparation of high-filling composite materials or manufacturing of complex parts; the preparation method is simple and easy to implement, and the application field is wide.