The rheological properties of the non-Gaussian net works, premitting the change of volume, are studied in the same way as the case of Gaussian net works, on the assumption of the theorem of proportionality.
This assumption is incosistent with the non-Gaussian nature of constructing chains. Without this assumption, however, the treatment seems to become very difficult, it is necessary to have the detailed information of the situation of chain-connection as a whole. By the help of the theorem of proportionality, the knowledge of the distribution of chain length is only required.
The results are similar to those of the case of Gaussian net works, but a few different points appear. First of them is that non-linear term appears in the differential deformation-stress relation, and secondly, the effects of volume change appears explicitely in the case of small deformation. It is understood that our model has essentislly the same propirties as generalized Maxwell model. I presume that this similarity is mainly due to the theorem of proportinality.
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