STUDIES OF SOLUTION DYNAMICS OF POLY(N-VINYL PYRROLIDONE) AND ITS IODINE ADDUCT

被引：14

作者：

CHENG, HN ^{[1
]}

SMITH, TE ^{[1
]}

VITUS, DM ^{[1
]}

机构：

[1] GAF CORP,WAYNE,NJ 07470

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1985年 / 23卷 / 03期

关键词：

Dynamics - IODINE - Chemical Reactions - Magnetic resonance - POLYMERS - Microstructure - Spectroscopy;

D O I：

10.1002/pol.1985.180230304

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Carbon-13 NMR spin-lattice relaxation times T//1 of poly(N-vinyl pyrrolidone) (PVP) and PVP-iodine have been studied in several solvents and at different temperatures. Three kinds of motion can be identified from the T//1 data: segmental motion, ring rotation, and ring puckering. The effective correlation time for segmental motion is calculated to be 1 multiplied by 10** minus **9 s, in good agreement with published proton NMR data. The results suggest association of pyrrolidone rings in benzene that reduces chain dimensions and also restricts chain mobility. As for PVP-iodine in water, again broad resonances are observed which sharpen considerably at higher temperatures. The result agrees with previous suggestions of specific interactions between the pyrrolidone group and iodine.

引用

页码：461 / 470

页数：10

共 39 条

[1] C-13 FOURIER-TRANSFORM NUCLEAR MAGNETIC-RESONANCE .10. EFFECT OF MOLECULAR-WEIGHT ON C-13 SPIN-LATTICE RELAXATION-TIMES OF POLYSTYRENE IN SOLUTION [J].