Method for producing modified starch for biodegradable plastics

摘要

The present invention relates to a method for producing modified starches for biodegradable plastics, and relates to a method for producing modified starches for biodegradable plastics, in which starch added to plastic general-purpose resins is subjected to physical processing such as inhibition of starch moisture content and fine particles of starch particles, Unlike the method of producing masterbatch for degradable plastic by simple substitution and modification by mixing with general resin, the polymer having at least one functional group is directly chemically bonded to the starch to impart hydrophobicity to the starch, The present invention is characterized in that a new modified starch having excellent compatibility with a general-purpose resin such as polyethylene, polystyrene, and polypropylene is prepared and used in combination with a general-purpose resin or alone to produce a degradable plastic. In addition to starch, The same denaturation method can be applied to It is.;It is a useful method for improving the biodegradability which can prevent environmental pollution while maintaining the characteristics of the modified starch and plastic for plastic of the present invention.