REGIME-III CRYSTALLIZATION IN POLYPROPYLENE
REGIME-III CRYSTALLIZATION IN POLYPROPYLENE
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DOI：
10.1021/ma00134a058
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发表时间：
1984-01-01
期刊：
影响因子：
5.5
通讯作者：
HOFFMAN, JD
中科院分区：
文献类型：
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作者：
CLARK, EJ;HOFFMAN, JD
最近开发的熔体 III 型结晶理论适用于等规聚丙烯 (i-PP) 球晶生长速率数据。随着温度降低，观察到已发表的生长速率与温度曲线的斜率显着向上变化，这被解释为制度 II-* 制度 III 转变。（制度 I-* 制度 II 转变会随着温度的降低而表现出斜率的向下变化。）制度-* 制度 III 转变发生在 137 C 附近，对应于 AT~ 48 C 的过冷度。实验观察到 In G+ U*/R (T) 图中斜率的变化
The recently developed theory for regime III crystallization from the melt is applied to isotactic polypropylene (i-PP) spherulite growth rate data. As the temperature decreases, a marked upward change in the slope of the published growth rate vs. temperature curves is observed, which is interpreted as a regime II—* regime III transition.(Aregime I—* regime II transition would have exhibited a downward change in slope with decreasing temperature.) The regime-* regime III transition occurs near 137 C, which corresponds to an undercooling of AT~ 48 C. The experimentally observedchange of slope in plots of In G+ U*/R (T