| L-丙交酯和D,L-丙交酯混合制备PLA工艺探讨 |
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| 引用本文： | 魏顺安,尤新强,吕利平,杨楠,罗鹏.L-丙交酯和D,L-丙交酯混合制备PLA工艺探讨[J].化工新型材料,2012,40(5):45-47. |
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| 作者姓名： | 魏顺安 尤新强 吕利平 杨楠 罗鹏 |
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| 作者单位： | 重庆大学化学化工学院,重庆,400044 |
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| 基金项目： | 中央高校基本科研业务费 |
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| 摘 要： | 以辛酸亚锡为催化剂,采用开环聚合法,对L-丙交酯和D,L-丙交酯混合制备PLA工艺进行探讨,分别考察了D,L-丙交酯含量、催化剂用量、聚合时间、聚合温度和体系真空度对PLA粘均分子量的影响。经过GPC测试,所得PLA的质均分子量达到1.15×105,并采用红外光谱仪和差热-热重分析仪对PLA进行了结构和热性能表征。
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| 关 键 词： | 丙交酯 聚乳酸 合成工艺 |
Synthesis process of poly(lactic acid) by blending of L-lactide and D, L-lactide |
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| Wei Shunan
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You Xinqiang
,
Lv Liping
,
Yang Nan
,
Luo Peng.Synthesis process of poly(lactic acid) by blending of L-lactide and D, L-lactide[J].New Chemical Materials,2012,40(5):45-47. |
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| Authors: | Wei Shunan You Xinqiang Lv Liping Yang Nan Luo Peng |
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| Affiliation: | Wei Shunan You Xinqiang Lv Liping Yang Nan Luo Peng(Chemistry and Chemical Engineering,CQU,Chongqing 400044) |
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| Abstract: | The synthesis process of PLA which was prepared by blending of L-lactide and D,L-lactide was studied.The effects of content of D,L-lactide,catalyst dosage,polymerization temperature,polymerization time and vacuum degree on the viscosity average molecular weight(Mv) of PLA were investigated,respectively.The weight average molecular weight(Mw) of PLA reached 1.15×105 by GPC.And the molecular structure and thermal property of PLA was characterized by infrared spectrometer and differential thermal-thermal gravitation analysis. |
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| Keywords: | lactide PLA synthesis process |
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