Ordering-induced micro-bands in thin films of a main-chain liquid crystalline chloro-poly(aryl ether ketone)

doi:10.1016/j.polymer.2004.01.083

CORC > 化学研究所 > 中国科学院化学研究所

	Ordering-induced micro-bands in thin films of a main-chain liquid crystalline chloro-poly(aryl ether ketone)
	Zhang, SJ ; Fu, LX ; Zhang, J ; Liu, JJ ; Yang, DC ; Ge, JJ ; Li, CY ; Cheng, SZD
刊名	POLYMER
	2004-05-13
卷号	45 期号:11 页码:3967-3972
关键词	Chloro-poly(Aryl Ether Ketone) Liquid Crystalline Polymer Banded Texture
ISSN号	0032-3861
DOI	10.1016/j.polymer.2004.01.083
英文摘要	Micro-banded textures developed from thin films of a main-chain thermotropic liquid crystalline chloro-poly(aryl ether ketone) in the melt were investigated using transmission electron microscopy (TEM). selective area electron diffraction, and atomic force microscopy techniques. The micro-banded textures were formed in the copolymer thin films after annealing at temperatures between 320 and 330degreesC, where a highly ordered smectic crystalline phase is formed without mechanical shearing. The micro-banded textures displayed a sinusoidal-like periodicity with a spacing of 150 nm and an amplitude of 2 rim. The long axis of the banded texture was parallel to the b-axis of an orthorhombic unit cell. In the convex regions, the molecular chains exhibited a homeotropic alignment, i.e. the chain direction was parallel to the film normal. In the concave re-ions, the molecular chains possessed a tilted alignment. In addition to the effects of annealing temperatures and times, the thickness of the film played a vital role in the formation of the banded texture. A possible formation mechanism of this banded texture vas also suggested and discussed. It was suggested that the micro-bands were formed during cooling, (C) 2004 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000221486300046
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/82329]
专题	中国科学院化学研究所
通讯作者	Yang, DC
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Akron, Maurice Morton Inst, Akron, OH 44325 USA 3.Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA 4.Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
推荐引用方式 GB/T 7714	Zhang, SJ,Fu, LX,Zhang, J,et al. Ordering-induced micro-bands in thin films of a main-chain liquid crystalline chloro-poly(aryl ether ketone)[J]. POLYMER,2004,45(11):3967-3972.
APA	Zhang, SJ.,Fu, LX.,Zhang, J.,Liu, JJ.,Yang, DC.,...&Cheng, SZD.(2004).Ordering-induced micro-bands in thin films of a main-chain liquid crystalline chloro-poly(aryl ether ketone).POLYMER,45(11),3967-3972.
MLA	Zhang, SJ,et al."Ordering-induced micro-bands in thin films of a main-chain liquid crystalline chloro-poly(aryl ether ketone)".POLYMER 45.11(2004):3967-3972.