Controlled polymerization of DL-lactide using a Schiff's base al-alkoxide initiator derived from 2-hydroxyacetophenone

被引:80
作者
Bhaw-Luximon, A [1 ]
Jhurry, D
Spassky, N
机构
[1] Univ Mauritius, Fac Sci, Dept Chem, Reduit, Mauritius
[2] Univ Paris 06, UMR 7610, Lab Chim Polymeres, F-75252 Paris 05, France
关键词
D O I
10.1007/s002890050570
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The kinetics of DL-lactide polymerization was studied in CH2Cl2 at 25 degrees C and in toluene at 70 degrees C with HAPENAlOMe, a new Schiffs base complex derived from 2-hydroxyacetophenone and ethylenediamine. A higher polymerization rate is observed with this initiator as compared to other previously reported Al-alkoxides complexes. The polymerization with HAPENAlOMe is also shown to be a living process in both solvents. Moreover, the polymerization proceeds to quite high conversion without significant occurrence of transesterification reactions as confirmed from C-13 NMR and SEC analysis.
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页码:31 / 38
页数:8
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