Crystal structure of casting polypropylene
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YIN Bo;YANG Mingbo
Online:
Published:
流延聚丙烯的结晶结构
尹波;杨鸣波
四川大学高分子科学与工程学院,四川 成都 610065
Abstract: The crystal structures of several casting polypropylenes were characterized with differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). The effects of temperature, draw ratio and cooling rate on crystal structure were discussed. The main conclusions were listed as follows: drawing could increase the crystallinity of casting polypropylene, but could not induce the formation of the γ-form.Temperature and cooling rate could affect the formation of the γ-form.The slower the cooling rate, the more easily the γ-form developed; γ-form was found in the samples crystallized at 95 and 115℃ and the γ-form content of the sample at 115℃ was higher than that at 95℃.
YIN Bo;YANG Mingbo.
尹波;杨鸣波.
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https://hgxb.cip.com.cn/EN/Y2006/V57/I4/1014