The changes in crystalline polymers, caused by simultaneous action of high pressures and shear strains, have been studied by differential scanning calorimetry. Polymer treatments were performed at room temperature and 5-60 kbars pressure. HDPE, LDPE, PP, PEO polycaproamide, PETPh, polybutylene terephthate, polyurethane and some blends of these polymers were studied. A new peak was found in the thermograms of polymers which have a glass transition point below room temperature. It was shown that the crystallinity of some polymers may be increased as a result of high pressure treatment. © 1983.
Zhorin, V. A., Godovskii, Y. K., & Yenikolopyan, N. S. (1982). A calorimetric study of changes in crystalline polymers and their blends under the simultaneous action of high pressures and shear strains. Polymer Science U.S.S.R., 24(5), 1073–1080. https://doi.org/10.1016/0032-3950(82)90207-6