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Degradation of polymers by high-speed stirring

โœ Scribed by Akihiko Nakano; Yuji Minoura

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
506 KB
Volume
15
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Abstract

Benzene solutions containing either poly(ethylene oxide) or poly(methyl methacrylate) or both of varying concentrations were prepared, stirred at a speed of 30,000 rpm, and the effects of concentrations of the same species or different species of polymers on the degradation of the polymers were investigated. Within experimental error little difference was observed in the [ฮท] curves measured for each degraded polymer in spite of change in concentration. It is clear that the degradation of polymer with highโ€speed stirring in the concentration range 1โ€“4% w/v is not caused by the interaction of polymer chains.

๐Ÿ“œ SIMILAR VOLUMES

Effect of solvents on the degradation of
Effect of solvents on the degradation of polymers by high-speed stirring
โœ Akihiko Nakano; Yuji Minoura ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 757 KB

The effect of solvents on the degradation of poly(methy1 methacrylate), polystyrene, and polyisobutylene by high-speed stirring (30,000 rpm) at 30ยฐC was studied. From the intrinsic viscosities of polymers stirred for given times, the viscosity-average degree of polymerization, p , was obtained and t