A composition of matter that includes: an aliphatic polyester at least 2 wt-% of an unreacted epoxidized fatty ester, wherein the epoxidized fatty ester has greater than 4.7 wt-% oxirane oxygen, based on the total weight of the epoxidized fatty ester and greater than 0 and up to 10 wt-% of a shrink reduction additive wherein the aliphatic polyester, epoxidized fatty ester, and shrink reduction additive form a mixture and wherein the weight percentages, other than the weight percentage of the oxirane oxygen, are based on the total weight of the mixture.
