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NMR spectra of poly(vinyl acetate) and poly(vinyl alcohol)

โœ Scribed by Ramey, Kermit C. ;Lini, David C.

Publisher
Wiley (John Wiley & Sons)
Year
1967
Tongue
English
Weight
276 KB
Volume
5
Category
Article
ISSN
0449-2986

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๐Ÿ“œ SIMILAR VOLUMES

Long branching in poly(vinyl acetate) an
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## Abstract It is a common view that poly(vinyl acetate) has many branches at the acetyl side group, but that the corresponding poly(vinyl alcohol) has little branching. In order to study the branching in poly(vinyl acetate) and poly(vinyl alcohol) which is formed by chain transfer to polymer, the

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Hydrogel blends were prepared from water-soluble polymers of poly(vinyl alcohol~inyl acetate) and poly(vinyl pyrrolidone). The method of preparation was optimized and different compositions of blends were characterized. The effect of thermal treatment and the introduction of an aldehydic crosslinkin

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## Abstract A crosslinked network was formed by the reaction of partially saponified poly(vinyl acetate) and toluylene diisocyanate in benzene. The yield of gel was markedly dependent on the degree of saponification and the concentrations of polymer and diisocyanate. Crosslinked poly(vinyl alcohol)

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## SYNOPSIS The grafting preference of vinyl acetate onto the methine carbon of poly(viny1 alcohol) (PVOH) versus the acetate group of poly(viny1 acetate) (PVAc) was determined as part of an attempt to prepare novel branched PVOH from partially hydrolyzed PVAc. The results showed long chain grafti

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Poly(vinyl acetal)s with different degree of acetalization have been synthesized from poly-(vinyl alcohol) and 4-dimethylaminobenzaldehyde. After quaternization and crosslinking they have been converted in ion exchange hydrogels. As quaternizing reagents ethylbromide, benzylchloride and p,p '-dichlo