Abstract
The isotactic poly(1-butene)/ poly(1-butene-co-propylene) in-reactor alloy was prepared by heterogeneous titanium catalyst system. The differences of crystal phase transformation time, phase transformation rate and phase transformation time between Form I and Form II at a given transformation degree at 25°C by fourier transform infrared spectroscopy(FT-IR) were discussed. It can be seen that the transformation from Form II to I of the alloy was significantly accelerated by the increase of propylene structure unit. With the further increase of the content of the propylene unit in the alloy, the transformation may be ignored and Form I can be formed immediately at 25°C. The change of the spherulite of pure poly(1-butene) and alloy also be observed and discussed.
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