Nihon Reoroji Gakkaishi
Online ISSN : 2186-4586
Print ISSN : 0387-1533
ISSN-L : 0387-1533
Elasticity and Structure of Tightly Cross-linked Polymers
Kenkichi MURAKAMISumio TAKASUGI
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1975 Volume 3 Issue 2 Pages 82-86

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Abstract

For measuring the density of crosslinks in rubber vulcanizates, there are two kinds of methods. The mechanical method leads to a value νM(0), whereas the swelling method gives a value νS (0). In the ranges of lower crosslink density, the relation νM (0)>νS(0) is obtained for reasons which are well understood, whereas the inverse relation νM(0)<νS(0) is established in the range of higher crosslink density for reasons which have not yet been clarified. By introducing improved equations for such vulcanizates at higher crosslink densities, the relationνM(0)>νS(0) was obtained even for the higher crosslink density.

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© The Society of Rheology, Japan
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