Deformation-induced crystalline structure evolutions of isotactic poly-1-butene

被引：6

作者：

Guo, Huilong ^{[1
]}

Zhou, Chengbo ^{[1
]}

Zhang, Wenyang ^{[1
]}

Wang, Jiayi ^{[2
]}

Li, Jingqing ^{[1
]}

Shang, Yingrui ^{[1
]}

Meng, Yanfeng ^{[3
]}

Christiansen, Jesper de Claville ^{[4
]}

Yu, Donghong ^{[5
]}

Wu, Zhonghua ^{[2
]}

Jiang, Shichun ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

[2] Univ Chinese Acad Sci, Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[3] Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Peoples R China

[4] Aalborg Univ, Dept Mech & Mfg Engn, DK-9220 Aalborg, Denmark

[5] Aalborg Univ, Dept Chem & Biosci, DK-9220 Aalborg, Denmark

来源：

COLLOID AND POLYMER SCIENCE | 2016年 / 294卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Deformation of iP-1-B; In situ WAXS investigations; Tensile temperature; X-RAY-SCATTERING; TENSILE DEFORMATION; POLYBUTENE-1; SPHERULITES; SYNCHROTRON-RADIATION; POLY(1-BUTENE); TRANSFORMATION; COPOLYMERS; TRANSITION; KINETICS; POLYPROPYLENE;

D O I：

10.1007/s00396-016-3964-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deformation-induced crystalline structure evolutions of isotactic poly-1-butene (iP-1-B) during uniaxial stretching at different temperatures (45 and 75 A degrees C) were investigated with in situ wide-angle X-ray scattering (WAXS) technology. The form I of iP-1-B was employed in this study. The obtained data on structure evolutions revealed that orientations would occur when the applied stress reached a critical value, while the orientation mechanisms are different at the two investigated temperatures. The crystallinity at 75 A degrees C declines fast during deformation, and the orientation is caused by the melting disparity between the crystals parallel and perpendicular to the stretching direction. The high crystalline content during stretching at 45 A degrees C maintains throughout the tensile process and the rotation of crystalline blocks results in the orientation. A brief schematic diagram was given to clarify the routes of orientation at the two temperatures.

引用

页码：1983 / 1988

页数：6

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