| 高分子量聚L-乳酸(PLLA)的合成研究 |
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| 引用本文： | 阮建明,刘莹,张海坡,申雄军,周忠诚.高分子量聚L-乳酸(PLLA)的合成研究[J].湖南科技大学学报(自然科学版),2007,22(1):81-85. |
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| 作者姓名： | 阮建明 刘莹 张海坡 申雄军 周忠诚 |
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| 作者单位： | 中南大学,粉末冶金研究院,湖南,长沙,410083 |
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| 摘 要： | 以L-乳酸为原料,采用丙交酯开环聚合法合成聚L-乳酸(PLLA).通过对单体纯度、催化剂用量、聚合温度、聚合时间等影响因素的考察,得出了合成粘均分子量可达到50万的PLLA的最佳条件.由于开环聚合制备PLLA反应的重现性较差,实验中对催化剂的用量及其在反应器中的分布均匀性、聚合的真空度以及聚合温度等影响反应重现性的因素进行了考察.最终得出聚合温度是影响反应重现性的重要因素.图6,表1,参11.
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| 关 键 词： | 聚乳酸 粘均分子量 聚合温度 聚合时间 催化剂量 |
| 文章编号： | 1672-9102（2007）01-0081-05 |
| 收稿时间： | 2006-02-23 |
| 修稿时间： | 2006年2月23日 |
Research of Synthesize Poly(L-Lactide) with Large Molecular Mass |
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| RUAN Jian-ming,LIU Ying,ZHANG Hai-po,SHEN Xiong-jun,ZHOU Zhong-cheng.Research of Synthesize Poly(L-Lactide) with Large Molecular Mass[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2007,22(1):81-85. |
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| Authors: | RUAN Jian-ming LIU Ying ZHANG Hai-po SHEN Xiong-jun ZHOU Zhong-cheng |
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| Institution: | Research Institute of Powder Metallurgy , Central South University , Changsha 410083, China |
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| Abstract: | Poly (L-lactide) (PLLA) prepared by ring-opening polymerization with L-lactide acid material.The purity of LLA,effect of catalyst,temperature and time on reaction were researched.The results indicate that use the best reaction condition can be obtained PLLA at 500 000 molecular mass.But PLLA prepared by ring-opening polymerization had low reaction stability,the catalyst amount,catalyst distributed uniformity,vacuum degree and reaction temperature were researched.The result indicated that the reaction temperature is important factor.6figs.,1tab.,11refs. |
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| Keywords: | PLLA molecular mass reaction temperature reaction time amount of catalyst |
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