Stereocontrol during the free-radical polymerization of methacrylamides in the presence of Lewis acids

被引：51

作者：

Isobe, Y ^{[1
]}

Suito, Y ^{[1
]}

Habaue, S ^{[1
]}

Okamoto, Y ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Appl Chem, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2003年 / 41卷 / 07期

关键词：

radical polymerization; metbacrylamides; stereospecific polymers; isotactic; Lewis acid;

D O I：

10.1002/pola.10647

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 effects of Lewis acids, that is, rare earth metal trifluoromethanesulfonates, on the free-radical polymerization of N-methylmethaerylamide (MMAM), N-isopropylmethacrylamide (IPMAM), N-tert-butylmethacrylamide (tBMAM), N-phenylmethacrylamide (PMAM), and methacrylamide were examined under various conditions. A catalytic amount of Yb(OSO2CF3)(3)-significantly affected the stereochemistry during the radical polymerization. Polymerization solvents strongly influenced the effect of the Lewis acids. Methanol was the best solvent for increasing the isotactic specificity during the polymerization of MMAM and IPMAM, whereas tetrahydrofuran was more effective for the tBMAM and PMAM polymerizations. (C) 2003 Wiley Periodicals, Inc.

引用

页码：1027 / 1033

页数：7

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