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.
