SAXS studies of blends of high- and low-density polyethylene |
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Authors: | C. Reckinger F. C. Larbi J. Rault |
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Affiliation: | Physique des Solides Bātiment 510, Université , Paris-Sud, 91405 , ORSAY , France |
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Abstract: | It is shown that in blends of PE having different melting temperatures the morphology depends drastically on the cooling rate. In these heterogeneous PE, the correlation relationship L = r between the long period L of the solid state and the dimension of the coils r in the liquid state is observed only in rapidly quenched materials. In slowcooled materials the SAXS spectra are interpreted in terms of segregation of two types of PE, on a scale of the order of the dimension of the coils, the arrangement of the crystalline lamellae being paracrystalline and statistical. |
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