| abstract |
PROBLEM TO BE SOLVED: To provide a plasticizer capable of imparting flexibility without greatly changing the thermal characteristics of polylactic acid. This is achieved by a polylactic acid composition containing 1 to 20 parts by mass of a polyglycerol fatty acid ester or a polyglycerol condensed hydroxy fatty acid ester with respect to 100 parts by mass of polylactic acid. As a polyglycerol fatty acid ester, it is preferable that the average polymerization degree of a polyglycerol is 2-10, and a fatty acid esterification rate is 50% or more. [Selection figure] None |