| 聚乳酸大分子引发剂的一步法合成 |
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| 引用本文： | 王维维,义正,江龙,淡宜.聚乳酸大分子引发剂的一步法合成[J].高分子材料科学与工程,2010(1):12-15. |
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| 作者姓名： | 王维维 义正 江龙 淡宜 |
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| 作者单位： | 高分子材料工程国家重点实验室（四川大学）四川大学高分子研究所; |
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| 基金项目： | 国家自然科学基金资助项目(NO.50873067) |
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| 摘 要： | 在异辛酸亚锡的催化下,以三溴乙醇作为引发剂,通过L-丙交酯一步开环聚合合成了端基含有溴原子的聚乳酸大分子引发剂PLLA-Br,为进一步通过ATRP反应制备聚乳酸嵌段共聚物奠定基础。利用GPc考察了PLLA-Br的数均分子量及分子量分布与反应时间的关系。FT-IR、~1H-NMR、DSC和TG等结果表明,PLLA-Br链端含有溴原子,属结晶聚合物,其结晶温度在104℃,熔融温度约为180℃,热分解温度高于200℃。
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| 关 键 词： | 聚乳酸 大分子引发剂 开环聚合 |
Synthesis of a Polylactide Macroinitiator via One-Step Polymerization |
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| WANG Wei-wei,YI Zheng,JIANG Long,DAN Yi.Synthesis of a Polylactide Macroinitiator via One-Step Polymerization[J].Polymer Materials Science & Engineering,2010(1):12-15. |
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| Authors: | WANG Wei-wei YI Zheng JIANG Long DAN Yi |
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| Affiliation: | State Key Laboratory of Polymer Materials Engineering;Polymer Research Institute of Sichuan University;Chengdu 610065;China |
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| Abstract: | A polylactide macroinitiator(PLLA-Br) was synthesized from L-lactide through the one-step ring opening polymerization(ROP) which was catalyzed by Sn(Oct)_2,and initiated by 2,2,'2'-Tribromoethanol.The relation of the number average molecular weight(M_n) as well as the polydispersity index(PDI) of the polymer and the reaction time was studied by Gel Permeation Chromatography(GPC).The structure and thermal properties of PLLA-Br were further characterized by means of Fourier transform infrared spectrometry(FT-... |
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| Keywords: | polylactide macroinitiator ring opening polymerization |
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