Water-soluble copolymers of N-vinylpyrrolidone and vinyl acetate: Synthesis, characterization, and monomer reactivity at high conversions

被引：9

作者：

Taghizadeh, MT ^{[1
]}

Foroutan, M ^{[1
]}

机构：

[1] Tabriz Univ, Fac Chem, Dept Phys Chem, Tabriz, Iran

来源：

JOURNAL OF POLYMER RESEARCH | 2004年 / 11卷 / 03期

关键词：

copolymerization; FTIR; NMR; N-vinylpyrrolidone; reactivity ratio; vinyl acetate; water-soluble polymers;

D O I：

10.1023/B:JPOL.0000043406.66299.78

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Homogeneous copolymers of N-vinylpyrrolidone (VP) and vinyl acetate (VA) which form clear aqueous solutions were prepared by free radical polymerization in a solution of isopropanol alcohol, using 2,2-azobisisobutyronitrile as an initiator. They were characterized by FTIR, H-1-NMR, and element analysis studies. The reactivity ratios of the monomer were computed by the Extended Kelen-Tudos method at high conversions, using data from both 1 H-NMR and elemental analysis studies. The reactivity ratios of VP and VA in a homogenous copolymer were observed to be very different from that of a heterogeneous copolymer. Additional information was obtained by finding out the sequence length distribution for copolymers.

引用

页码：203 / 209

页数：7

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