| 双官能团聚乳酸大分子引发剂的合成 |
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| 引用本文： | 李斗,石淑先,夏宇正,刘健,陈晓农,焦书科. 双官能团聚乳酸大分子引发剂的合成[J]. 北京化工大学学报(自然科学版), 2007, 34(5): 514-517 |
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| 作者姓名： | 李斗 石淑先 夏宇正 刘健 陈晓农 焦书科 |
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| 作者单位： | 北京化工大学,材料科学与工程学院,北京,100029;北京化工大学,材料科学与工程学院,北京,100029;北京化工大学,新型高分子材料制备与加工北京市重点实验室,北京,100029 |
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| 摘 要： | 以D,L-乳酸和1,4-丁二醇为原料，采用缩合聚合法合成了双端羟基聚乳酸(HO-PDLLA-OH)，然后与α-溴代丙酰溴反应，得到适于ATRP的含溴端基的聚乳酸大分子引发剂Br-PDLLA-Br。考察了反应时间、1,4-丁二醇用量对HO-PDLLA-OH酸值和相对分子质量的影响，用IR、1H-NMR对聚合物结构进行了表征；并采用邻苯二甲酸酐法测得1mol HO-PDLLA-OH中含2mol OH，1mol Br-PDLLA-Br中含1.91mol Br。
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| 关 键 词： | 聚乳酸 合成 α-溴代丙酰溴 |
| 修稿时间： | 2007-03-09 |
Synthesis of a polylactide bifunctional macroinitiator |
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| LI Dou,SHI ShuXian,XIA YuZheng,LIU Jian,CHEN XiaoNong,JIAO ShuKe. Synthesis of a polylactide bifunctional macroinitiator[J]. Journal of Beijing University of Chemical Technology, 2007, 34(5): 514-517 |
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| Authors: | LI Dou SHI ShuXian XIA YuZheng LIU Jian CHEN XiaoNong JIAO ShuKe |
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| Affiliation: | 1.College of Materials Science and Engineering; 2.Key Laboratory of Beijing Municipality for Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A dihydroxyl-terminated polylactide oligomer(HO-PDLLA-OH) was synthesized from D,L-lactic acid and 1,4-butanediol through polycondensation and subsequently converted to the dibromo-terminated PDLLA analogue(Br-PDLLA-Br) by reaction with 2-bromopropanoyl bromide The products were characterized by means of IR and 1H-NMR spectroscopy.The number of hydroxyl groups and bromine atoms in HO-PDLLA-OH and Br-PDLLA-Br respectively were calculated by measuring the hydroxyl number of the polymers using the phthalic anhydride method.The results showed that the content of hydroxyl groups was 2.00 mol per mole HO-PDLLA-OH and that of bromine 1.91 mol per mole of Br-PDLLA-Br.The Br-PDLLA-Br can be used as a functional macromolecular initiator in atom transfer radical polymerization. |
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| Keywords: | polylactide macroinitiator synthesis 2-bromopropanoyl bromide |
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