Crystal reorganization of poly (butylene terephthalate)

被引：46

作者：

Jariyavidyanont, Katalee ^{[1
]}

Androsch, Rene ^{[1
]}

Schick, Christoph ^{[2
,3
,4
]}

机构：

[1] Martin Luther Univ Halle Wittenberg, Interdisciplinary Ctr Transfer Oriented Res Nat S, D-06099 Halle, Germany

[2] Univ Rostock, Inst Phys, Albert Einstein Str 23-24, D-18051 Rostock, Germany

[3] Univ Rostock, Competence Ctr CALOR, Albert Einstein Str 23-24, D-18051 Rostock, Germany

[4] Kazan Fed Univ, 18 Kremlyovskaya St, Kazan 420008, Russia

来源：

POLYMER | 2017年 / 124卷

关键词：

Poly (butylene terephthalate); Glass-crystallization; Cold-crystallization; Crystal reorganization; Rigid amorphous fraction; RIGID AMORPHOUS FRACTION; MELTING BEHAVIOR; CRYSTALLIZATION; NUCLEATION; RECRYSTALLIZATION; RELAXATION; KINETICS; POLY(ETHYLENE-TEREPHTHALATE); PHASE; GLASS;

D O I：

10.1016/j.polymer.2017.07.076

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of isothermal melt-crystallization of poly (butylene terephthalate) (PBT) has been evaluated in a wide temperature range from below the glass transition temperature T-g to close to the equilibrium melting temperature, using fast scanning chip calorimetry. Analysis of heating scans recorded after pre-defined crystallization times permitted gaining valuable information about the effect of crystallization on the glass transition, the cold-crystallization kinetics and stability of crystals formed at the crystallization temperature and during heating. As one of the main conclusions, it is suggested that reorganization on heating involves melting of crystals without formation of a completely relaxed and isotropic melt (at the length scale of a crystal) but a non-isotropic cluster of chain segments which turn into a more stable crystal by a fast click-but not classical secondary nucleation/growth-mechanism. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：274 / 283

页数：10

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