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Crystallization and polymorphic transformation of poly(1-butene)/(1-butene-co-propylene) in-reactor alloy (iPB/B-co-P) with different chain structure prepared by two stage sequential polymerization was investigated by DSC, FTIR and POM. As can be concluded from DSC results, the crystal form II to I transformation rate is enhanced with the increase of propylene unit content for alloy with the chain...
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...
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