| abstract |
PROBLEM TO BE SOLVED: To provide a biodegradable resin composition having a good crystallization rate and excellent in temperature sensitivity and heat resistance and a method for producing the same. [MEANS FOR SOLVING PROBLEMS] A biodegradable resin, a plasticizer, and a crystal nucleating agent, which is an aliphatic compound having at least two groups selected from an ester group, a hydroxyl group, and an amide group in a molecule. The biodegradable resin composition comprising the step (1) of mixing at a melting point (Tm) or higher of the biodegradable resin and the step (2) of heat-treating at a temperature not lower than the glass transition temperature (Tg) of the biodegradable resin composition and lower than Tm. And a biodegradable resin, a plasticizer, and the above crystal nucleating agent, having a haze value of 20% or less at a thickness of 0.5 mm after heat treatment at 60 ° C. for 36 hours or 60 hours, a temperature of 25 ° C., Storage elastic modulus (E ′) at a frequency of 50 Hz is 1 × 10 8 to 2 × 10 9 Pa, temperature is 60 ° C., and storage elastic modulus (E ′) at a frequency of 50 Hz is 1 × 10 7 to 1 × 10 9 Pa. A biodegradable resin composition that satisfies the conditions. [Selection figure] None |