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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2009, Vol. 28 ›› Issue (4): 801-803.DOI: 10.3969/j.issn.1674-0696.2009.04.38

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端羟基聚乳酸低聚物的合成研究

袁小亚   

  1. 重庆交通大学理学院,重庆400074
  • 收稿日期:2009-04-09 修回日期:2009-04-16 出版日期:2009-08-15 发布日期:2015-04-15
  • 作者简介:袁小亚(1979—),男,湖北黄冈人,副教授,博士,主要从事高分子材料及改性沥青的教学与研究。E-mail:yuanxy@yahoo.com.cn。
  • 基金资助:
    重庆市教育委员会科学技术研究项目( KJ070402) ; 重庆市自然科学基金计划项目( 2007BB4442)

Hydroxyl-Terminated?Polylactic?Acid?Oligomers

YUAN Xiao-ya   

  1. School?of?Science,?Chongqing?Jiaotong?University,?Chongqing?400074,?China
  • Received:2009-04-09 Revised:2009-04-16 Online:2009-08-15 Published:2015-04-15

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摘要： 以1,4丁二醇为功能单体,将乳酸预脱水、减压聚合成功制备了不同分子量的端羟基聚乳酸低聚物。考察 了聚合压力、1,4丁二醇与催化剂用量等不同条件对端羟基聚乳酸低聚物分子量的影响。研究表明随1,4丁二 醇用量的增大,所得低聚物分子量逐渐降低;降低聚合压力能提高低聚物分子量;加大催化剂SnCl2 ??2H2O的用量 能较小程度地增加低聚物分子量的分子量,但SnCl2??2H2O的用量以05%为宜。

关键词: 端羟基聚乳酸, 聚合, 反应条件

Abstract: Hydroxyl-terminated?polylactic?acid?oligomers?were?prepared?by?pre-removal?of?water?and?poly-condensation?polymerization?of?lactic?acid?with?1,4-butanol?as?the?functional?comonomer.?The?effect?of?reaction?parameters?including?the?polymerization?press?and?the?amount?of?1,4-butanol?and?catalyst?on?the?molecular?weight?of?the?oligomers?was?investigated?in?detail.?The?results?show?that?the?molecular?weight?of?oligomers?is?lowered?gradually?with?the?increase?of?the?loading?of?1,4-butanol;and?the?molecular?weight?can?be?increased?by?reducing?the?polymerization?press;increasing?the?dosage?of?the?catalyst?SnCl2?·?2H2O?can?increase?the?molecular?weight?of?the?oligomers?to?a?less?extent,however,the?optimal?amount?of?tile?catalyst?should?be?controlled?at?0.?5%.

Key words: hydroxyl-terminated polylactic acid , polymerization , reaction condition ;

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