Synthesis and characterization of four-arm star-shaped polymers and copolymers

被引：5
|
作者：
Wang, TL [1 ]
Tseng, CG
机构：
[1] Natl Univ Kaohsiung, Dept Chem & Mat Engn, Kaohsiung 811, Taiwan
[2] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 807, Taiwan
来源：
POLYMER INTERNATIONAL | 2006年 / 55卷 / 05期
关键词：
atom-transfer radical polymerization; four-arm; star-shaped polymers; viscosity;
D O I：
10.1002/pi.2008
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Four-arm star-shaped polymers and copolymers were obtained by transition metal-catalyzed atom-transfer radical polymerization (ATRP). The polymers were characterized by FTIR and (1)H-NMR spectroscopy. Gel permeation chromatography results indicated the formation of polystyrene and polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) arms with controlled molecular weights. In dilute solution, the linear polymers had higher inherent viscosities than star-shaped ones. Thermogravimetric analysis showed a similar degradation mechanism for linear and star-shaped polymers. Differential scanning calorimetry indicated the successful formation of diblock star-shaped copolymers. (C) 2006 Society of Chemical Industry.
引用
收藏
页码：558 / 564
页数：7
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