✦ LIBER ✦

Sorption and diffusion of aliphatic hydrocarbons into crosslinked natural rubber

✍ Scribed by G. Unnikrishnan; Sabu Thomas

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 196 KB
Volume: 35
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(19970415)35:5<725::aid-polb1>3.0.co;2-l

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✦ Synopsis

The sorption and transport of four aliphatic hydrocarbons into natural rubber crosslinked by different vulcanization systems [conventional (CV), efficient (EV), peroxide (DCP) and a mixed system consisting of sulfur and peroxide (mixed)] were investigated in the temperature interval of 28-60ЊC. Of the four systems, natural rubber vulcanized by DCP exhibited lowest penetrant uptake. It was observed that the kinetics of liquid sorption in every case deviates from the regular Fickian trend, characteristic of sorption of liquids by rubbers. The diffusion coefficient, activation energy of sorption, enthalpy, entropy, and the rubber-solvent interaction parameter were evaluated for the four systems from the swelling data.

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