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MISCIBILITY OF POLY(VINYL ALCOHOL) POLY(METHACRYLIC ACID) AND POLY(VINYL ALCOHOL) POLY(ACRYLIC ACID) SYSTEMS .1. HIGH-RESOLUTION NMR-STUDIES IN SOLUTION
被引:30
|作者:
ZHANG, XQ
[1
]
TAKEGOSHI, K
[1
]
HIKICHI, K
[1
]
机构:
[1] HOKKAIDO UNIV,FAC SCI,DEPT POLYMER SCI,SAPPORO,HOKKAIDO 060,JAPAN
关键词:
POLY(VINYL ALCOHOL);
POLY(METHACRYLIC ACID);
POLY(ACRYLIC ACID);
HIGH-RESOLUTION NMR;
NUCLEAR OVERHAUSER EFFECT;
POLYMER BLENDS;
POLYMER COMPLEXES;
MISCIBILITY;
HYDROGEN-BONDING INTERACTION;
PROTON CHEMICAL EXCHANGE;
D O I:
10.1295/polymj.23.79
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Miscibility in two-component polymer systems of poly(vinyl) alcohol)/poly(methacrylic acid) (PVA/PMAA) and poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA) in dimethylsulfoxide (DMSO) solution was examined by high-resolution NMR. Intermolecular NOE was observed between PVA and PMAA or PAA. The results indicate that the PVA and PMAA or PAA are intimately mixed on a scale less than 4-angstrom. The chemical shifts of COOH resonances of PMAA and PAA and the OH resonance of PVA suggest the existence of hydrogen-bonding interaction between the two different polymers.
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页码:79 / 86
页数:8
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