2005, Vol. 19

Issue (1): 15-22 DOI:

Research Articles

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四川大学高分子科学与工程学院高分子材料工程国家重点实验室

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;. . Chin J Mater Res, 2005, 19(1): 15-22.

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Abstract The morphology evolution during elongation of the poly(ethylene terephthalate) (PET)/polyethylene (PE) and polycarbonate (PC)/PE blends with high interfacial contact (pseudo--adhesion) was examined. The morphological observation indicates that for PC/PE blends, numerous PC microfibrils are $in$--$situ$ formed, while for PET/PE blends, slippage takes place between the PET particles and the matrix. This can successfully explain the mechanism of the different reinforcement of PET and PC on PE. Moreover, the macroscopic morphology development of both blends during tensile testing is also quite different. For the PET/PE blend, the necking first occurs on one point close to the non--gate end of the specimen; subsequently the necking (cold drawing) spreads uniformly from this point. For the PC/PE blend, the necking zone and its extension are irregular, and generally, the whole tested zone is elongated gradually.

Key words: organic polymer materials blend high interfacial compressive stress morphology evolution in-situ fib

Received: 27 April 2004

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