Abstract

The microdeformation properties of oriented high crystallinity polymer systems have been investigated and the results analysed. A new approach proposed regarding the interpretation of these properties is based on two processes that were investigated, namely the deformation of long periods and the mutual slip of fibrils. With this approach all the possible relationships between the micro- and macrodeformation of the systems could be explained. Experiments showed that it is justifiable to take lattice as a criterion of the homogeneity (heterogeneity) of microdeformation, and the G(s) factor has been introduced to facilitate its quantitative evaluation. The validity of assumptions that were made has been demonstrated by taking as an example the elastic stretching of oriented polymer systems subjected to various types of technological treatment.

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