超临界CO2中聚乳酸的合成及表征

高分子材料科学与工程, 2005, 21(3): 66-69.

超临界CO2中聚乳酸的合成及表征

周贤爵 ^1, , 李进 ^2, , 邵惠丽 ^3, , 胡学超 ^4,

1.东华大学纤维与聚合物材料改性国家重点实验室,上海,200051

2.东华大学纤维与聚合物材料改性国家重点实验室,上海,200051

3.东华大学纤维与聚合物材料改性国家重点实验室,上海,200051

4.东华大学纤维与聚合物材料改性国家重点实验室,上海,200051

基金项目: 上海市学科科研项目

关键词： L-丙交酯 , 聚乳酸 , 超临界CO2 , 开环聚合 , 辛酸亚锡

SYNTHESIS AND CHARACTERIZATION OF POLYLACTIDES IN SUPERCRITICAL CO2

以辛酸亚锡为催化剂用超临界二氧化碳作溶剂成功地实现了L-丙交酯的开环聚合,聚合产物用FT-IR、1H-NMR、13C-NMR、DSC和GPC进行了分析表征,结果表明:超临界二氧化碳流体中左旋丙交酯开环聚合不是离子型聚合,可能是配位-插入聚合.所合成的聚乳酸具有很高的光学活性;所得聚合物无论分子量大小,都具有熔点和中等结晶度,且随分子量的增大而升高.

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超临界CO2中聚乳酸的合成及表征

SYNTHESIS AND CHARACTERIZATION OF POLYLACTIDES IN SUPERCRITICAL CO2

参考文献