[1]刘文涛,唐新颖梁雯娜,夏学莲,等.聚乳酸的ATRP引发剂的合成与表征[J].郑州大学学报(工学版),2014,35(03):31-34.[doi:10.3969/j.issn.1671-6833.2014.03.008]
　LIU Wentao,TANG Xinying,LlANG Wenna,et al.Synthesis and Characterization of Polylactic acid Macromolecular Initiator by ATRP[J].Journal of Zhengzhou University (Engineering Science),2014,35(03):31-34.[doi:10.3969/j.issn.1671-6833.2014.03.008]
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聚乳酸的ATRP引发剂的合成与表征()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
35
期数:
2014年03期
页码:
31-34
栏目:
出版日期:
2014-06-30

文章信息/Info

Title:
Synthesis and Characterization of Polylactic acid Macromolecular Initiator by ATRP
作者:
刘文涛; 唐新颖梁雯娜; 夏学莲; 何素芹; 朱诚身
Author(s):
LIU Wentao; TANG Xinying; LlANG Wenna; XlA Xuelian; HE Suqin; ZHU Chengshen
School of Materials Scienee and Engineering, Zhengzhou University, Zhengzhou 450001, China
Keywords:
PLA; initiator; BlBB;  conversion ratio
分类号:
0631.5
DOI:
10.3969/j.issn.1671-6833.2014.03.008
文献标志码:
A
Abstract:
lntrodueing hydrophilie group onto polylaetie aeid ( PLA) by atom transfer radieal polymerizationwould faeilitate changing the hydrophobicity of PlA to amphipathy, in which progress maeromoleeular initiatorpreparation is the first step. The synthesis strategy of polylactie aeid maeromoleeular initiator ( PLA-Br) con.sisted of a two-step proeedure: ( i) degradation of high molecular weight PLA to about 8000 g/mol and molee-ular weight distribution about 1. 26 , followed by ( i) quantitative conversion of the PLA hydroxyl end-groupswith bromoisobutyryl bromide ( BlBB). The maeromoleeular parameters and struetures of PLA-Br were deter.mined by ’H-NMR spectroseopy and F’T-lR. Dependenees of conversion ratio of BlBB on the mole ratio olBIBB and PLA and the reaetion time were diseussed. The results showed that the highest esterilication rate olPLA was 79% as the mole ratio of BlBB and PLA 1: 2 and reaction time 24 h.
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