Different influences of nucleating agents on crystallization behavior of polyethylene and polypropylene

The crystallization behavior of polyethylene (PE) and polypropylene (PP), including the neat ones and the ones nucleated with the same nucleating agent (NA), was studied by DSC. It was found that the nucleating agent decelerated the PE nonisothermal crystallization process. NA did enhance the nuclea...

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Veröffentlicht in:Science China. Chemistry 2012-06, Vol.55 (6), p.1140-1147
Hauptverfasser: Jiang, HaiBin, Zhang, XiaoHong, Qiao, JinLiang
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Qiao, JinLiang
description The crystallization behavior of polyethylene (PE) and polypropylene (PP), including the neat ones and the ones nucleated with the same nucleating agent (NA), was studied by DSC. It was found that the nucleating agent decelerated the PE nonisothermal crystallization process. NA did enhance the nucleating rates for both PE and PP, but the linear growth rate dominated the vol- umetric growth rate for PE, and the volumetric growth rate dominated the overall crystallization rate. That is why PE nucleated with NA had a slower overall crystallization rate than the neat one.
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subjects Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Crystallization
Deceleration
Polyethylenes
Polypropylene
成核剂
线性增长率
结晶行为
结晶过程
结晶速率
聚丙烯
聚乙烯
title Different influences of nucleating agents on crystallization behavior of polyethylene and polypropylene
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