Influence of the order of polymer melt on the crystallization behavior: II. Crystallization kinetics of isotactic polypropylene
Influence of the order of polymer melt on the crystallization behavior: II. Crystallization kinetics of isotactic polypropylene
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DOI：
10.1007/s003960000450
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发表时间：
2001-06
影响因子：
2.4
通讯作者：
X. Zhu;D. Yan
中科院分区：
文献类型：
--
作者：
X. Zhu;D. Yan
The crystallization behavior of isotactic polypropylene (iPP) melts with a high order has been carefully examined by differential scanning calorimetry (DSC) and polarized light microscopy (PLM). The experimental results show that the helically ordered iPP melt crystallizes by heterogeneous nucleation with two-dimensional diffusion controlled growth and the Avrami exponent is about 2. The data available both from our DSC and PLM experiments and from the literature indicate that the order of a polymer melt can speed up the crystallization process. When some unmelted materials exist in the ordered melt, the crystallization will become more rapid.
