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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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o，o-双十二酰基壳聚糖/聚乳酸复合膜中氢键的作用
Keywords: 有机高分子材料,酰基壳聚糖,聚乳酸,氢键
Abstract:
？研究了氢键对o,o-双十二酰基壳聚糖/聚乳酸(ocs/plla)溶液复合膜相容性的影响.结果表明,复合膜中氨基和羟基的伸缩振动谱带相对各纯组分均有明显的红移,ocs的氨基与plla的羰基之间存在强烈的氢键作用;随着ocs含量的增加,plla在2θ=16.7°和2θ=19.1°的结晶衍射峰往低角度略有偏移,峰强逐渐减弱;当ocs含量(质量分数)(?)60%时,plla的结晶衍射峰甚至消失,表明氢键使ocs分子链插层到plla的品格中,溶液法制备的复合膜具有良好的相容性;低于100℃升温可使ocs与plla之间的氢键加强,热处理有利于改善复合膜的相容性.
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