The present invention relates to a multicomponent plastic product comprising at least two different thermoplastic materials, wherein a first thermoplastic material comprises a first thermoplastic polymer, and a second thermoplastic material comprises at least a second thermoplastic polymer and at least one degrading enzyme able to degrade the first thermoplastic polymer. The second thermoplastic material has a transformation temperature lower than the transformation temperature of the first thermoplastic material, and the first and second plastic materials are at least partially adjacent in the multicomponent product.

A gelatin-containing water-soluble film having excellent water solubility, excellent mechanical properties such as film strength and elongation, and excellent sealability is provided as follows. The water-soluble film contains gelatin and a polyvinyl alcohol resin (A). The polyvinyl alcohol resin (A) contains a modified polyvinyl alcohol resin.

Methods of making films with feedstock comprising biomass. The methods include treating a feedstock comprising biomass with an acidic aqueous solution to yield a solid phase and a liquor, generating a forming fluid with the liquor, and generating a film from the forming fluid. Some versions include comminuting the solid phase to generate a comminuted solid phase and including the comminuted solid phase in the forming fluid. The biomass preferably contains relatively high amounts of pectin and protein. The films can be in the form of standalone films or coatings on substrates such as paper. The films provide oil and grease resistance and air impermeability, among other advantages.

The invention discloses a modified chitosan-LZM-CA composite antibacterial cling film optimized by response surface methodology and the preparation method and application thereof, relates to the technical field of food packaging materials. The invention provides freshwater crayfish as the research object, and adopts the modified chitosan, lysozyme (LZM), a good film-forming material carrageenan (CA) as the composite antibacterial cling film materials, and through the response surface experimental design to determine the best ratio of modified chitosan-LZM-CA composite antibacterial cling film. Furthermore, the TVB-N value and the change value of the total number of bacterial colonies of the freshwater crayfish with the composite antibacterial cling film during refrigeration, can be regarded as indicators to examine the preservation effect, providing a theoretical basis of the chitosan composite film preservation technology development and application for freshwater crayfish and other aquatic products.

The present disclosure provides a preparation method of a broad bean protein and starch-based foamed hydrogel, and a use thereof in preparation of a vibration-damping packaging. The preparation method includes the following steps: stirring a broad bean protein solution with a concentration of 40 g/L to 60 g/L until foaming; under stirring, adding a sodium alginate-starch mixed solution in a volume twice a volume of the broad bean protein solution, followed by stirring until homogeneous; and adding calcium carbonate until a final concentration of the calcium carbonate reaches 10 g/L to 12 g/L, and further stirring thoroughly to produce the broad bean protein and starch-based foamed hydrogel, where in the sodium alginate-starch mixed solution, a concentration of sodium alginate is 22.5 g/L to 27.5 g/L, and a concentration of corn starch is 120 g/L to 160 g/L.

The present disclosure relates to reversibly wrinkled silk-based compositions. The provided compositions are tunable and the reversible wrinkles are sensitive to water vapor, methanol vapor, and UV irradiation. The present disclosure also provides methods for making and using the same.

The present invention relates to a method for coating an inert or naturally occurring material with a silk polypeptide. It further relates to a coated inert or naturally occurring material obtainable by said method and to uses thereof. It also relates to products comprising said coated material.