Lactide monomer was obtained by vacuum distillation of lactic acid. After purification by recrystallization, the lactide was polymerized to polylactic acid with zinc oxide as the catalyst.
乳酸经减压蒸馏制得单体丙交酯，再以氧化锌为催化剂聚合得到聚乳酸。
Lactide monomer was obtained by vacuum distillation of lactic acid. After purification by recrystallization, the lactide was polymerized to polylactic acid with zinc oxide as the catalyst.
乳酸经减压蒸馏制得单体丙交酯，再以氧化锌为催化剂聚合得到聚乳酸。
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