Biodegradable composition and biodegradable film

Abstract

A biodegradable composition including polybutylene adipate terephthalate and thermoplastic starch. A non-recoverable area according to Formula 1 of the biodegradable composition is 1,000 Pa·log % or more 10,000 Pa·log % or less. In Formula 1, A is the area of the storage modulus measured after increasing the strain on the biodegradable composition from 0.01% to 75% at a temperature of 150° C. and a frequency of 1 Hz, and B is the area of the storage modulus measured after reducing the strain on the biodegradable composition back to 0.01%. Non - recoverable ⁢ area = A - B [ Formula ⁢ 1 ]

Dependencies are inferred from the claim text.