引用本文:
何义勇, 罗筱烈, 崔便晓, 陈力之, 马德柱. 不同分子量聚丙烯β晶相的形成[J]. 应用化学,
2001, 18(2): 112-115.
Citation: HE Yi-Yong, LUO Xiao-Lie, CUI Bian-Xiao, CHEN Li-Zhi, MA De-Zhu. Formation of β-Crystal Phase in Polypropylene with Different Molecular Weight[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 112-115.
Citation: HE Yi-Yong, LUO Xiao-Lie, CUI Bian-Xiao, CHEN Li-Zhi, MA De-Zhu. Formation of β-Crystal Phase in Polypropylene with Different Molecular Weight[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 112-115.
不同分子量聚丙烯β晶相的形成
English
Formation of β-Crystal Phase in Polypropylene with Different Molecular Weight
Abstract:
The crystallization and melting behavior of U-crystal phase in polypropylene(U-PP) with different molecular weight have been studied by DSC and WAXD techniques. All the four U-PP samples with different molecular weight have a common optimum crystallization temperature. The crystallization rate, relative content of U-crystal phase and the crystallinity of all PP samples were found in relation with the molecular weight of the polymer. With increase in molecular weight, the crystallization rate decreases, while the relative content of U-crystal phase and the crystallinity increase.
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Key words:
- polypropylene
- / U-crystal phase
- / crystallization rate
- / crystal phase transformation
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