| INFLUENCE OF COMPOSITIONAL HETEROGENEITY ON MORPHOLOGY AND PROPERTIES OF SEGMENTED COPOLYMERS |
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| 引用本文： | 胡世如,徐懋,张兴元,马德柱,罗筱烈. INFLUENCE OF COMPOSITIONAL HETEROGENEITY ON MORPHOLOGY AND PROPERTIES OF SEGMENTED COPOLYMERS[J]. 高分子科学, 1988, 0(1): 64-74 |
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| 作者姓名： | 胡世如 徐懋 张兴元 马德柱 罗筱烈 |
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| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Department of Applied Chemistry，University of Science and Technology of China，Hefei，Department of Applied Chemistry，University of Science and Technology of China，Hefei，Department of Applied Chemistry，University of Science and Technology of China，Hefei |
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| 摘 要： | Polyethylene terephthalate(PET)/polycaprolactone(PCL) segmented copolymers with different hard segment contents and a blend of two of them were studied by using DSC, WAXS, TEM and IR techniques and dynamic mechanical, stress-strain and isothermal crystallization measurements. Emphasis was laid on the studies of influence of compositional heterogeneity on the morphology and properties of these segmented copolymers. It was found that the solution cast specimens of the more heterogeneous sample exhibit better segregation of segments, high crystallinity and melting temperature. They have higher thermal stability of mechanical properties at small deformations. However, they are less stable against large deformations and may become softer than the more homogeneous ones.
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| 收稿时间： | 1987-02-09 |
INFLUENCE OF COMPOSITIONAL HETEROGENEITY ON MORPHOLOGY AND PROPERTIES OF SEGMENTED COPOLYMERS |
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| HU Shiru,XU Mao,ZHANG Xingyuan,MA Dezhu LUO,Xiaolie. INFLUENCE OF COMPOSITIONAL HETEROGENEITY ON MORPHOLOGY AND PROPERTIES OF SEGMENTED COPOLYMERS[J]. Chinese Journal of Polymer Science, 1988, 0(1): 64-74 |
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| Authors: | HU Shiru XU Mao ZHANG Xingyuan MA Dezhu LUO Xiaolie |
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| Affiliation: | Institute of Chemistry; Academia Sinica; Beijing; Department of Applied Chemistry; University of Science and Technology of China; Hefei |
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| Abstract: | Polyethylene terephthalate(PET)/polycaprolactone(PCL) segmented copolymers with different hard segment contents and a blend of two of them were studied by using DSC, WAXS, TEM and IR techniques and dynamic mechanical, stress-strain and isothermal crystallization measurements. Emphasis was laid on the studies of influence of compositional heterogeneity on the morphology and properties of these segmented copolymers. It was found that the solution cast specimens of the more heterogeneous sample exhibit better segregation of segments, high crystallinity and melting temperature. They have higher thermal stability of mechanical properties at small deformations. However, they are less stable against large deformations and may become softer than the more homogeneous ones. |
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| Keywords: | Segmented polyester eompositional heterogeneity morphology mechaical properties. |
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