Provided is a resin composition capable of forming a coated product that exhibits low adhesion to a metal roll during production and is superior in oxygen barrier property and capable of forming a film or sheet superior in oxygen barrier property, impact strength under low humidity and color tone. The resin composition of the present invention contains 50 to 98 parts by mass of a modified starch (A), 2 to 50 parts by mass of a polyvinyl alcohol (B), 0.1 to 10 parts by mass of a polyoxyalkylene (C), and optionally 0 to 5 parts of a polyol plasticizer (D), wherein the total content of the (A), (B), (C) and (D) is 100 parts by mass.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

The method employs citric acid as the modifier, combines the citric acid with starch, achieves the good modification effect of starch at high temperature, and improves the digestion-resistant property of starch. Citric acid itself is nontoxic, the process conditions are mild and the treatment methods are relatively safe, which shows very high practical values. In the method, starch and citric acid are cross-linked by using the infrared treatment technology, and the dry heating treatment is used to promote the modifier citric acid into starch, thereby achieving significant and stable modification effects, and high modification efficiency.

The method employs citric acid as the modifier, combines the citric acid with starch, achieves the good modification effect of starch at high temperature, and improves the digestion-resistant property of starch. Citric acid itself is nontoxic, the process conditions are mild and the treatment methods are relatively safe, which shows very high practical values. In the method, starch and citric acid are cross-linked by using the infrared treatment technology, and the dry heating treatment is used to promote the modifier citric acid into starch, thereby achieving significant and stable modification effects, and high modification efficiency.

Extruded starch compositions and methods for their preparation are provided. The compositions possess a high degree of cook which imparts particular viscosity characteristics. The compositions may be formed into films having advantageous properties such as low haze, high strength and high gas barrier. The starch compositions find use in a wide range of applications, particularly, but not exclusively, in the manufacture of thin films for packaging.

Disclosed is a processing method of a self-reinforced starch-based multifunctional material, and belongs to the technical field of starch deep processing. The processing method takes bulk starch as a base material, including the following steps: firstly reacting starch nanoparticles with an organic acid anhydride reagent and adding a bacteriostatic agent to prepare composite nanoparticles, then mixing the composite nanoparticles with the bulk starch, an etherifying agent, a crosslinking agent, a plasticizer and the like, and finally preparing a starch-based multifunctional material by dry extrusion modification combined with a starch-based nanoparticle assembly and reinforcement technology. The method of the disclosure is simple and convenient in step, mild and controllable in reaction, and continuous and green in production. The obtained product has good mechanical properties, high barrier properties and high antibacterial properties, can be applied to many fields such as food, textiles, daily chemicals and medicine, and has a broad market prospect.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

The present invention relates to a method of manufacturing spray-dried powders. During the process, a solvent is used. The process is done in multiple steps such that the emulsification mass ratio is low when removal of the solvent is started. Preferred solvents are isopropyl acetate and ethyl acetate. The invention also relates to a set-up to run the inventive process at industrial scale.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.