274 results about "Bioplastic" patented technology

The invention discloses a composite natural polymer gel material with a cross-linking agent. The material comprises hydrogel, organogel, aerogel and bioplastics and mainly overcomes the problem of low mechanical strength of conventional natural polymer gel materials. According to the invention, a certain amount of the cross-linking agent is added into a natural polymer water-based solution or dispersion liquid, then stirring is carried out, the obtained mixture is placed in a non-solvent for physical cross-linking, and then washing is carried out so as to obtain composite natural polymer hydrogel; water in the composite natural polymer hydrogel is replaced with an organic solution so as to prepare composite natural polymer organogel; the composite natural polymer hydrogel or organogel is dried so as to prepare composite natural polymer aerogel; the composite natural polymer aerogel is subjected to hydrophobic treatment so as to obtain hydrophobic aerogel; the composite natural polymer aerogel is subjected to heat treatment so as to obtain carbon aerogel; and one or more selected from the above-mentioned gel materials are subjected to high-temperature pressing so as to prepare composite natural polymer bioplastics. The composite natural polymer gel material prepared in the invention has the advantages of excellent mechanical properties, a high specific surface area, high elongation at break, etc., and can be easily processed into molded products of a plurality of forms.

A bioplastic composition comprising a biopolymer containing from 10 - 40 wt% of coated inorganic particles; the particles being coated with one or more of fatty acids, fatty acid derivatives, rosins, rosinates, polyolefin based waxes, oligomers and mineral oils, and combinations thereof has improved stiffness and toughness and also has improved crystallisation kinetics rendering it useful for extrusion, injection moulding and thermoforming.

The invention discloses a chemical and physical double-cross-linking high-strength chitin gel material and a preparation method thereof. The preparation method comprises the following steps: adding a cross-linking agent for partial chemical cross-linking at the gelatinization temperature lower than that of a chitin solution, subsequently soaking the chitin gel which is subjected to partial chemical cross-linking into a non-solvent for physical cross-linking, and washing with water, thereby obtaining double-cross-linking chitin hydrogel; replacing water in the double-cross-linking chitin hydrogel by an organic liquid, thereby obtaining chitin organic gel, and drying the double-cross-linking chitin hydrogel or the organic gel, thereby obtaining double-cross-linking chitin aerogel; and hot-rolling the double-cross-linking chitin hydrogel or the double-cross-linking chitin aerogel, thereby preparing double-cross-linking chitin biological plastic. The double-cross-linking chitin gel material disclosed by the invention is excellent in mechanical property, low density and high specific surface area, can be easily processed into finished products such as fiber, sheets, granules, films and columns, and is applicable to large-scale popularization and application.

The present invention relates generally to polymers and monomers derived from agricultural feedstocks, and more particularly to methods for the production of monomers from renewable agricultural resources such as feedstocks, for example canola, flax and tallow, and polymers, in particular polyurethanes produced from monomers derived from such feedstocks. The present invention also relates to novel processes for the production of short-chain alcohols, as well as hydroxyl wax esters, from renewable feedstocks. An improved apparatus for carrying out ozonolysis reactions is also disclosed.

A bioplastic composition may contain certain biodegradable and renewable components. In some examples, the bioplastic composition includes at least one kind of aquatic macrophyte biomass, which may contain a native composition of protein and carbohydrates, in a blend with one or more types of biodegradable or durable thermoplastic polymers. The aquatic macrophyte composition may provide a balance of both polymeric and reinforcing properties to the blended bioplastic not typically exhibited by terrestrial feedstock such as soy meal or corn starch. Such a bioplastic composition may be formed into molded articles using extrusion, injection molding, compression molding, or the like.

A biodegradable pharmacy container and safety cap includes a biodegradable material that includes a bioplastic resin and a plasticizer; a container that includes the biodegradable material, adapted to store medicine; a first locking element on an exterior side of the container; a cap that includes the biodegradable material; a resilient inner member in the cap that engages with the container so as to form a seal; a second locking element in the cap that cooperates with the first locking element so that the cap is safely held to the container. The bioplastic resin may be polylactic acid (PLA), PHA, PHB, or PHBH. The acrylate may be cured with ultraviolet light, and may include a silicone.

Blood-derived plastic articles prepared from compositions including blood and, in some embodiments, at least one crosslinking agent and/or at least one biological response modifier, that can be useful for biological applications such as wound repair and tissue grafts; methods of making and using the same; methods for assessing the concentration of a biological response modifier in an article; and systems for preparing blood-derived plastic articles are provided.

The invention discloses a method for preparing controlled degradable polypropylene foamed particles. In the method, bioplastic is introduced into polypropylene resin in a certain ratio by a near-melting point foaming technology, the environment degradation speed of the polypropylene foamed particles is increased through a coordination effect of bioplastic environment degradation, and the mass percentage content of the bioplastic is controlled to fulfill the aim of controlling the environment degradation speed of the polypropylene foamed particles. In addition, by the preparation method, the foaming temperature of polypropylene can be reduced, and the foaming window of the polypropylene can be expanded from 3-5 DEG C to 10-27 DEG C, so that the requirement on a temperature control device of kettle pressure foaming equipment and the using cost of heat in the process of preparing foamed particle forming bodies are reduced.

The invention discloses a purpose of lignin degrading bacterium, and particularly relates to a method for synthesizing a biological plastic precursor-polyhydroxyalkanoate by utilizing lignin degrading bacterium (Cupriavidus basilensis B-8) with a collection number of CGMCC (China General Microbiological Culture Collection Center) No. 4240. A bacterial strain can grow by utilizing lignin (the lignin concentration of a growth medium is 1g/L to 6g/L) which is not subjected to pretreatment as a unique carbon source, and is used for synthesizing a homopolymer of biological plastic-polyhydroxyalkanoate in the condition (the concentration of nitrogen is less than 60mg/L) that a nitrogen source is short. By using a culture and a production method which are provided by the invention, the carbon source and the pretreatment cost of the carbon source are greatly decreased; the method has large-scale production and industrialization potential.

The invention relates to the technical field of tableware making, in particular to a biodegradable and disposable straw article and a preparation method thereof. The biodegradable and disposable straw article is prepared from the following raw materials: straw powder, starch, fiber, glycerol, bioplastics, a release agent, an accelerant and water. Waste plant straw is taken as a raw material, so the production cost is greatly lowered; the foamed disposable article is prepared by the assistance of multiple functional auxiliaries; after being heated, the disposable article cannot generate any toxic component, and can be converted into easy-to-degrade matter under a natural condition, and the degraded matter further can be recycled and reused, thus achieving environment ideas of safety, environment friendliness and waste utilization, and effectively protecting environment.

A method of making a bioplastic, and a bioplastic produced thereby, by using human plasma in which human plasma is clotted, either dried through its gel phase or dried and powdered, and processed into a bioplastic with the addition of at least one plasticizer followed by forming and heating to form a final bioplastic construct.

The present invention relates to plastic materials comprising lignin and poly (butylene succinate) (PBS) to methods of manufacturing those plastic materials and to articles obtained by molding the plastic materials of the invention. Since PBS can be obtained from renewable sources, the present invention also provides for bioplastic materials comprising lignin and PBS. The present invention also provides for plastic materials comprising lignin and PBS and at least one fiber and to articles obtained from those plastic materials that are degradable, compostable and recyclable.

Blood-derived plastic articles prepared from compositions including blood and, in some embodiments, at least one crosslinking agent and/or at least one biological response modifier, that can be useful for biological applications such as wound repair and tissue grafts; methods of making and using the same; methods for assessing the concentration of a biological response modifier in an article; and systems for preparing blood-derived plastic articles are provided.

Disclosed is a method for preparing a semi-furanic copolyamide containing at least one furanic dicarboxylic acid moiety and at least one aliphatic diamine moiety in the backbone. The method is based on solid-state polymerization. Particularly, the method uses a biomass-derived furanic dicarboxylic acid as a raw material. A semi-furanic copolyamide prepared by the method has molecular weight and color levels that are practically required in industrial applications. In addition, the semi-furanic copolyamide can replace fossil fuels due to its good thermal stability and is suitable for use as an environmentally friendly bioplastic.

The invention discloses a biodegradable material as well as a preparation method and an application of the biodegradable material. The biodegradable material comprises the following raw materials in percentage by weight: 40%-60% starch, 35%-50% of plant fiber and 3%-12% of additive. The preparation method comprises the following steps of A) dehydrating; B) pulverizing and C) shaping. The invention also discloses an application of the biodegradable material prepared by the method in preparing a starch sucker. In the pulverization treatment disclosed by the invention, the chemical and physical modifications are adopted, the traditional processes of blending modification at high and low temperatures and then blending extrusion of the starch material are abandoned, the stability of the material is further improved, the process is simplified, the completely degradable material is prepared, the biodegradable material is far superior to the currently applied blending biological plastic in strength, toughness, transparency, water resistance degradability and cost and thus the popularization and application of the material and environmental conservation are facilitated.