158 results about "Bioplastic" patented technology

The invention discloses a multi-stage micro-nano structure flexible wearable pressure sensor inspired by skin, and a preparation method and application of the multi-stage micro-nano structure flexible wearable pressure sensor. The sensor is composed of a piezoresistive layer, an electrode layer and a packaging layer. The piezoresistive layer takes polydimethylsiloxane (PDMS) as a flexible substrate, a submillimeter-level cylindrical array main structure and a micron-level skin-like spinous secondary microstructure randomly distributed at the top end of the submillimeter-level cylindrical array main structure are constructed through a composite mold, and a nano-level conductive network is formed by adopting an MXene / MWCNT hybrid material through a dispensing process, so that multi-scale stress synergistic response is realized; the electrode layer takes a degradable lignocellulose biological plastic film prepared from bagasse as a base material, and a silver paste interdigital electrode is loaded through a screen printing process; the packaging layer is fully coated with a medical-grade polyurethane (PU) film so as to ensure signal stability. The sensor shows ultrahigh sensitivity, wide detection range and low detection limit through the synergistic effect of the submillimeter-micron-nano multilevel structure, and can be applied to the fields of human motion monitoring, intelligent electronic skin and the like.

The invention relates to the field of enzyme preparations, and discloses an enzyme preparation for catalytic degradation of bioplastics and a preparation method thereof, the enzyme preparation for catalytic degradation of bioplastics comprises the following components by weight: 25-50 parts of an enzyme, 1-8 parts of a catalytic additive, 2-10 parts of a stable dispersant, and 30-50 parts of a buffer solution; the catalytic additive is prepared by using calcium bentonite as a carrier to load nano titanium dioxide; the stabilizing dispersant is prepared by introducing polyethylene glycol monoallyl ether into a sodium lignin sulfonate structure by utilizing an initiator through an aqueous solution polymerization method, and by adding the catalytic additive and the stabilizing dispersant, the enzyme preparation is endowed with good degradation efficiency on bio-based plastics and the stability of an enzyme preparation system is improved.

Through sourcing net-primary productivity additive algae-based biomass feedstock, the exclusive use of renewable energy in processing, and the appropriate formulation and processing, a novel algae-derived bio-based plastic is both carbon-negative and provides some performance advantages over existing algae-based film plastics especially with regard to optical clarity. A system may be provided that produces a carbon-negative bioplastic. The production of the bioplastic in a process chamber may be controlled by an electronic controller. The electronic controller may be controlled by a host system, such a server. The electronic controller may be configured to direct production of the bioplastic in the process chamber using hydrocolloid, which is derived from algae.

The invention provides all-bamboo-based thermosetting bioplastic as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ball milling on bamboo powder and an alkali solution under a mixing condition; diluting the ball-milled slurry, adjusting the pH value to be less than or equal to 7 by using an acid solution, and centrifuging; and adjusting the solid content of the centrifugal slurry, forming a film, and carrying out hot press molding to obtain the all-bamboo-based thermosetting bioplastic. The technical problem to be solved is how to effectively utilize bamboo wood to prepare the all-bamboo-based thermosetting bioplastic, so that all components of the bamboo wood can be utilized, the preparation process is simple, the reaction condition is mild, the efficiency is high, and the prepared all-bamboo-based thermosetting bioplastic is excellent in comprehensive performance, good in flexibility and excellent in solvent resistance, has the tensile strength larger than or equal to 50 MPa and can be widely applied to the field of bioplastics. Therefore, the device is more practical.

The invention discloses a modified starch fiber-based degradable plastic and a preparation method thereof, and belongs to the technical field of bioplastics, citric acid is adopted to improve the interaction between starch and epoxidized soybean oil, borax is used as a cross-linking agent to further improve the compatibility between the starch and citric acid-epoxidized soybean oil oligomer, and the modified starch fiber-based degradable plastic is prepared. The modified starch fiber-based degradable plastic is obtained, finally, the degradable plastic film is prepared through a hot press molding method, the degradable plastic film has good tensile strength, elongation at break and degradation capacity, borax serves as a cross-linking agent and can be complexed with hydroxyl of starch to form a ligand, and a multi-core complex of a net structure is formed. The borax can also form a coordinate bond with hydroxyl or carboxyl of citric acid or generate a polymerization reaction, so that the compatibility of the starch and the citric acid-epoxidized soybean oil oligomer is further improved.

The invention discloses a simple preparation method of a high-starch-content, high-strength and low-cost biological polyester film bag material, and belongs to the field of biodegradable high-molecular materials. PBAT, high-molecular-weight polylactic acid, starch, a compatible modifier, a biological chain extender and an antioxidant are put into a mixing mill to be mixed at a high speed, and pre-dispersed mixed granules are obtained; the preparation method comprises the following steps: adding the raw materials into an internal mixing and extrusion integrated reverse twin-screw extruder, firstly melting and internal mixing for in-situ reaction, then starting extrusion, cooling the extruded material by air cooling, then cutting and collecting granules, and taking an amphiphilic block copolymer polypropylene glycol-polyethylene glycol-polypropylene glycol (PPG) as a modifier, the use amount of polylactic acid is small, the starch content is high, plasticizing is not needed, the components are easy to obtain, the multi-phase interface permeation adhesion is high, the system is uniform, the method is simple, and the cost is low; the biodegradable plastic has the advantages of toughness of PBAT, strength of PLA, low price of starch and compatibilization and reinforcement of amphiphilic blocks, and is suitable for processing of biodegradable film bags, dustproof nets, plastic parts and other bioplastic products.

The invention belongs to the technical field of bioplastics, and particularly relates to a bioplastic as well as a preparation method and application thereof. The bioplastic is prepared from the following raw materials in parts by mass: 10-70 parts of cellulose, 1-10 parts of a flexibilizer, 1-40 parts of a first plasticizer, 1-2 parts of a second plasticizer, 0.3-15 parts of a lubricant, 1-10 parts of an inorganic filler, 0.1-2 parts of starch and 0.1-5 parts of an auxiliary agent. Natural substances of cellulose are fully utilized, the strength and impact resistance of starch are improved, the starch has the physical property suitable for being used as a plastic substitute raw material, and plastic degradation can be accelerated by simultaneous generation of biodegradation and photodegradation while the manufacturing cost is reduced, so that the problem of plastic waste is solved.

The present disclosure provides methods for degrading bioplastics. Also provided are articles suitable for degradation of bioplastics. The bioplastic may be a polyhydroxyalkanoate polymer and it may be degraded by an article comprising bacteria and one or more enzymes.

The present invention discloses a primary biomass fiber-pollen blended bioplastic and its preparation method and application, relating to the field of bioplastic technology. The preparation method of the bioplastic is as follows: taking natural fiber, crushing it, adding water and stirring to form a fiber suspension; taking natural pollen to clean and remove impurities and lipids on the surface, using alkali solution for stirring treatment, washing the mixed system to neutrality and filtering to remove excess water to obtain pollen microgel; mixing the fiber suspension and pollen microgel evenly to obtain a mixed slurry; applying the mixed slurry on a mold, drying and peeling it off to obtain primary biomass fiber-pollen blended bioplastic. The primary biomass fiber-pollen blended bioplastic provided by the present invention has high mechanical strength, can be easily water-shaped and water-spliced, and has good recyclability and biodegradability; its preparation method utilizes a large amount of waste or low-value-added biomass resources, has a simple process, low production cost, and less environmental pollution.

The invention relates to the technical field of degradable plastics, and particularly discloses a starch-based biodegradable plastic and a preparation method thereof.The preparation method includes the steps that high-amylose starch (such as corn, potatoes and cassava) is selected as a raw material and cleaned, dried and ground to obtain starch powder, a natural plasticizer (such as glycerin) is added to improve the flexibility, and the starch-based biodegradable plastic is obtained; a chemical cross-linking agent (such as glutaraldehyde) is used for enhancing the strength and the heat stability, an antioxidant (such as vitamin E) and an antibacterial agent (such as tea polyphenol) are used as additives, and the mass ratio of the antioxidant to the antibacterial agent is (0.6-0.85): (0.05-0.2): (0.005-0.03): (0.001-0.01): (0.001-0.005). The starch-based bioplastic prepared by the invention has good degradation performance and adjustability, is particularly suitable for the fields of disposable packaging, agricultural films, medical materials and the like, has a natural antibacterial function and ultraviolet protection capability, has huge application potential in the fields of medical treatment, food packaging and environmental protection, and has wide application prospects. The advantages of the starch-based plastic in agricultural application are also realized.

The application discloses a kind of based on cellulose ether eutectic solvent biological plastics and its synthesis method, the synthesis method by cellulose ether hydrogen bond donor and hydrophobic phenolic hydrogen bond acceptor according to predetermined mass ratio under certain temperature condition preparation cellulose ether eutectic solvent;Then homogeneous dynamic boron-oxygen bond chemical modification is carried out to cellulose ether in the eutectic solvent;Finally, add the cellulose ether eutectic solvent mixed solution containing polymerizable monomer, after two kinds of solution are mixed evenly, under certain temperature, stationary for a certain time, biological plastics can be prepared.The preparation process of the application does not need to use any initiator and catalyst, and does not involve organic solvent and VOC, process is simple, green and environmental protection, low in cost;The prepared biological plastics has excellent optical performance, mechanical property, and has the characteristics of recyclability and biodegradability.

Provided for are methods of producing triacylglycerol-accumulated microalgae, methods for making bioplastics from triacylglycerol-accumulated microalgae, methods for making alga-mixed plastics, and products including these bioplastics. Methods of triacylglycerol accumulation using centrifugation are also provided. Products such as plastic beads and other consumer products can be made from the bioplastics described herein.

The bioplastic additives and antimicrobial plastics include polyphenols and organic polymers. The polyphenol can be a phenol, a polyphenol, a bioflavonoid, a flavonoid, a tannin, a coumarin, a lagman, a quinone, a stilbene, or a qurcuminoidenin. The organic polymer may be chitosan, chitin, cellulose, and keratin. In an advantageous form, the polyphenol is hesperidin, and the organic biopolymer is chitosan.

There is provided a method and apparatus for processing a bioplastic that can be used in multiple industries such as, for example, food / non-food applications, apparel industry applications, retail store packaging and so forth. It is preferable that the present invention is able to enable replacement / reduction of use of conventional non- biodegradable plastic originating from petrochemicals.

To provide a resource collection system for promoting collection of plastic waste which is a resource to be recycled.SOLUTION: A resource collection system includes a processor. The processor displays location of a collecting box for collecting plastic waste, biomass plastic waste, or biodegradable plastic waste made from recyclable materials as resources on a user terminal's map. When the processor confirms that a resource has been correctly inserted into the collecting box by the user holding the user terminal, it executes a process of providing a reward to the user for the insertion of the resource.SELECTED DRAWING: Figure 1

The invention relates to the field of biodegradable high polymer materials, and discloses a bio-based packaging material with an anti-oxidation effect and a preparation method of the bio-based packaging material. 40 to 60 parts of polyhydroxyalkanoate; 10-20 parts of a composite antioxidant filler; the composite antioxidant filler is prepared by the following steps: (a) crushing sodium bentonite until the specific surface area is 45-55 m < 2 > / g and the particle size distribution D90 is less than or equal to 10 microns; (b) mixing bentonite powder and water according to the ratio of 1kg: 5L to form dispersion liquid with the solid content of 18%, and adding 0.3% sodium hexametaphosphate dispersing agent; (c) adding cerium nitrate; and (d) heating the product to 1050 DEG C at a speed of 8 DEG C / min, and calcining for 2 hours. Through the intercalation structure of the bentonite-based composite filler, an inorganic antioxidant component is organically combined with a bio-based polymer matrix, so that a breakthrough in long-acting oxidation resistance is realized in a completely biodegradable polylactic acid / polyhydroxyalkanoate system, and the technical bottleneck that traditional bioplastics are easy to oxidize and degrade is solved; and a sustainable solution is provided for green packaging materials.

[Problem] To provide a metal carbide and a method for producing a metal carbide with which a bioplastic raw material can be relatively inexpensively and stably supplied. [Solution] One aspect of the present invention provides a metal carbide having a biomass degree of 0.01% to 100% as measured by the 14C isotope measurement method defined in ASTM D6866.

The present disclosure relates to a novel polycarbonate-based polymer capable of controlling the biodegradation rate by various methods including biodegradation OFF-ON, and an application thereof. The polycarbonate-based polymer according to an embodiment of the present disclosure can be applied as a drug carrier, a moisture superabsorbent biodegradable material, an environmentally friendly biodegradable material, and the like. Additionally, the hydrophobic polycarbonate-based polymer according to an embodiment of the present disclosure can block (OFF) the biodegradation of a biodegradable material with a hydrolysis mechanism until a desired time point and trigger (ON) the biodegradation at a desired time point, so that the biodegradable OFF-ON material containing the hydrophobic polycarbonate-based polymer can be applied to drug delivery, biodegradable medical devices for human transplantation, biodegradable devices for environmental monitoring, bioplastics, transient electronics, and the like.

A composite material and method can include a bioplastic film, the bioplastic film including a first surface and a second surface, wherein the first surface denotes an inner facing surface and the second surface denotes an exterior facing surface. The bioplastic film can include a polypeptide-based or polysaccharide-based biopolymer, or a mixture of polypeptide-based and polysaccharide based biopolymer, and a bioplasticiser substance. An inner product-facing surface of the bioplastic film can include a coating that includes alpha-eleostearic acid as a major component. Further provided are products containing the material and their uses in the fields of packaging, coatings and ink-printable substrates.

The present invention provides a parameter optimization method, device, equipment and medium for a fully biodegradable plastic molding process, and relates to the technical field of material process optimization. The present invention uses plasma to treat nano raw materials and mix them with a fully biodegradable matrix; then, an experimental group is set up based on the response surface method and degradation rate data is recorded; then, the optimal variable ratio is determined by establishing a response surface model and performing multiple regression analysis; then, the mixing temperature and time are optimized, and a bio-based lubricant is added for mixing; finally, a final molded product that meets the specifications is obtained through multi-stage cooling and shearing equipment processing. The method improves the performance and finished product quality of fully biodegradable plastics by accurately optimizing each parameter.

The present invention pertains to biodegradable materials and their applications in the medical and industrial sectors, particularly for disposable devices made from bioplastics. These devices are designed for use in medical diagnostics, surgical procedures such as Post-operative catheters, drains, catheters, disposable gloves, caps, overshoes, surgical table covers, disposable pipette tips, injection materials, and industrial operations such as condoms, vaginal speculums, specimen containers, measuring cups, urinals, and medical bands and as industrial purpose with garbage bags, disposable straws, refrigerator bags, stretch film, food preservation bags, clothing bags, shopping bags, hamburger sandwich bags, vegetable preservative bags, providing a biodegradable alternative to conventional petrochemical-based plastics. Furthermore, the invention offers methods for the environmentally responsible disposal of these devices via sterilization, shredding, and industrial composting. These bioplastics are formulated with plasticizers and additives to improve mechanical strength, flexibility, and thermal stability. The invention addresses both the production of high-performance bioplastic devices, such as syringes, sharps containers, suction canisters, and packaging materials, and methods for environmentally responsible disposal through sterilization, shredding, and industrial composting. The bioplastics used in this invention degrade within 12 months under composting conditions.

The present invention relates to an efficient process aimed at recycling material from the food industry, preferably from the fish industry, such as, for example, that extracted from fish skin, so as to realise a general, at least partially circular and sustainable process concerning consumer goods comprising a bioplastic film.

The invention relates to a method for rapidly synthesizing polyhydroxyalkanoate based on segmented feeding oxygen-limiting mixed flora, and belongs to the technical field of solid waste resource utilization. According to the method disclosed by the invention, the functional flora is obtained from the activated sludge through a limited oxygen condition and a feeding mode of separately adding the carbon source and the nutrient solution, so that the synthesis rate of the polyhydroxyalkanoate in a traditional sequencing batch reaction device is effectively improved. In addition, the stability of the polyhydroxyalkanoate synthesized by the functional flora is verified by prolonging the culture time, and the result shows that the polyhydroxyalkanoate can be rapidly and stably synthesized by the functional flora screened under the limited oxygen condition in a sectional feeding mode. The method not only improves the synthesis efficiency of polyhydroxyalkanoate and reduces the production cost, but also has important industrial application value. Through further optimization and large-scale application, the method is expected to play a key role in the fields of environmental protection and bioplastic production.

The present invention relates to drinking straws that are made from biodegradable material or bioplastics. The process to manufacture the present invention can use waste lipid wax byproducts. The present invention can incorporate chemical modification of corn or hemp fiber waste, and is comprised of wax byproduct, xanthan gum, carnauba wax and stearic acid. Stearin, hardener and plasticizers are mixed with corn or soy wax. A binder ingredient can be added to the waxes and fiber mixture, resulting in a smooth and hard, durable and biodegradable material with a high melting point. This material is then processed using an extrusion method, whereby the mixed ingredients are forced through an opening in a perforated plate or die with a design specific to form a straw, and then cut into a specific size by blades. The extruder consists of a large, rotating screw tightly fitting within a stationary barrel, at the end of which is the die. Extrusion enables mass production of food via a continuous, efficient system that ensures uniformity of the final product.

A method and apparatus for generating electricity using an electrochemical dual-pole fuel cell with a coiled aluminum wire disc as the anode, dual air-cathodes, and dual bioplastic electrolyte discs. The invention teaches the use of inexpensive materials and simplified dual-pole fuel cell construction and assembling of fuel cells into modules, and modules into electricity generators.

This invention relates to an efficient process designed to recycle materials from the food industry, preferably fisheries, such as materials extracted from fish skin, thereby enabling a universal, at least partially recyclable and sustainable process for consumer products, including bioplastic films.

The invention relates to the technical field of bioplastics, in particular to a quickly degradable bioplastic and a preparation method thereof, and the raw material formula comprises the following components in parts by weight: 40-70 parts of modified starch, 30-60 parts of biodegradable polymer, 3-8 parts of biodegradation accelerator and 1-8 parts of functional additive. The water-sensitive enzyme microcapsule accelerator is matched with a synergistic degradation structure of the modified starch and the polycaprolactone, so that a coating structure sodium alginate of the water-sensitive microcapsule is kept stable in a dry storage or use environment, and degradation is prevented from being started in advance; and in a wet or compost environment, water molecules rapidly penetrate through the surface layer of the material to trigger the microcapsule to be broken, and the released alpha-amylase and candida antarctica lipase B synchronously start the enzymolysis reaction of starch hydroxyl and polycaprolactone ester bonds from the interior of the material, so that the degradation process is uniform and thorough, and no refractory residues exist.

To provide acetylene utilizable as a raw material for various bioplastics while reducing loads on the environment, to provide a method for producing the acetylene, and to provide an acetylene derivative.SOLUTION: According to an aspect of the present invention, there is provided acetylene, wherein the acetylene contains carbon atoms derived from biomass.SELECTED DRAWING: None

The present invention relates to a process for reusing a polymer composition comprising at least one biodegradable polyester, starch and / or additives, comprising the steps of: (1) contacting said biodegradable polymer composition with a first solvent comprising from 50 to 100% by weight of cyclopentanone, obtaining a liquid fraction comprising at least one biodegradable polyester and a solid fraction comprising insoluble starch and / or additives; (2) separating said liquid fraction comprising at least one polyester from said solid fraction; (3) at least partially removing said first solvent from said liquid fraction; (4) reusing the polyester obtained from said liquid fraction in a polymerisation or thermoplastic transformation process, thereby obtaining a biodegradable polymer composition. Biodegradable polyesters obtained by means of the said reutilisation process, biodegradable polymer compositions comprising them, and biodegradable articles obtained therefrom constitute further objects of the invention.

The application provides a protein biological plastic and a preparation method and application thereof. The protein biological plastic is prepared by using zein, natural silk micro-nano fiber and a small amount of plasticizer as raw materials to configure a composite slurry, and then using a film coating process. The application greatly improves the mechanical property of the zein film by compounding the natural silk micro-nano fiber with the zein film. In addition, the addition of the silk micro-nano fiber improves the film coating property of the zein composite slurry, so that the large-scale film coating preparation of the protein biological plastic is realized. The raw materials used in the application are all biodegradable, non-toxic and harmless materials, and the reaction process does not involve complex chemical reactions. The protein biological plastic has excellent mechanical property and can be used in the fields of packaging, special paper, coating finishing and the like.