BIODEGRADABLE GAS-BARRIER MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a biodegradable polyester material showing an excellent gas-barrier property, especially a biodegradable polyester material showing a high gas-barrier property. SOLUTION: The biodegradable gas-barrier material is prepared by dispersing a swellable, layered silicate treated with organic onium ion in a polyester containing lactic acid as the main repeating unit.