Crystallization and melting kinetics of low tacticity polypropylene in relation to preformed nuclei and uncrystallizable defects

被引：8

作者：

Furushima, Yoshitomo ^{[1
]}

Schick, Christoph ^{[2
]}

Toda, Akihiko ^{[3
]}

Takahashi, Hideaki ^{[1
]}

Tatsuki, Toshiumi ^{[4
]}

Fujiwara, Satoshi ^{[4
]}

Okada, Kazuma ^{[4
]}

Ohkura, Masatoshi ^{[4
]}

机构：

[1] Toray Res Ctr Ltd, Shiga Lab, Otsu, Shiga 5208567, Japan

[2] Univ Rostock, Inst Phys & Competence Ctr CALOR, D-18051 Rostock, Germany

[3] Hiroshima Univ, Grad Sch Adv Sci & Engn, Higashihiroshima 7398521, Japan

[4] Toray Industries Ltd, Films & Film Prod Res Labs, Otsu, Shiga 5208558, Japan

来源：

POLYMER | 2023年 / 269卷

关键词：

Fast scanning calorimetry; Polypropylene; Crystallization; NUCLEATION;

D O I：

10.1016/j.polymer.2023.125761

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Fast scanning calorimetric experiments were carried out on low-isotacticity polypropylene (LT-PP) to evaluate the effect of pre-nucleation below the glass transition temperature (also known as Tammann's crystal nuclei development method) on the kinetics of crystallization and melting. The melting kinetics of secondary crystal-lized LT-PP was not affected by the presence of crystal nuclei, although the isothermal crystallization rate of LT -PP was accelerated by increasing the amount of crystal nuclei. The maximum primary crystallization decreased with increasing amounts of crystal nuclei. This behavior can be explained by the formation of uncrystallizable defects between the crystalline domains.

引用

页数：6

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