Stereospecific radical polymerization of N-methyl methacrylamide

被引：27

作者：

Zhang, J

Liu, WH

Nakano, T

Okamoto, Y ^{[1
]}

机构：

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

[2] Nagoya Univ, Grad Sch Engn, JCII, JRCPP,Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan

来源：

POLYMER JOURNAL | 2000年 / 32卷 / 08期

关键词：

radical polymerization; tacticity; stereochemistry; solvent effect; syndiotacticity; methacrylamides;

D O I：

10.1295/polymj.32.694

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

N-Methyl methacrylamide (N-MMAm) was polymerized using radical initiators under various conditions. The triad tacticity of the obtained polymers was determined by 100 MHz C-13 NMR. The polymers were rich in syndiotactic configuration. At a given temperature, the syndiotacticity increased with an increase in solvent polarity. This solvent effect may have connection with the hydrogen bonding interaction among solvent, monomer, and growing species. The fraction of rr triad increased with decreasing polymerization temperature in all solvents. Monomer concentration also affected the stereochemistry of the polymerization. By optimizing conditions, a high rr specificity (rr = 95%) was achieved. Thermal property of the poly(N-MMAm)s with different tacticities was studied by DSC.

引用

页码：694 / 699

页数：6

共 29 条

[1] Radically initiated polymerization of a methacryloylamido-terminated saccharide .1. Monomer synthesis, homopolymerization and characterizations [J].