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

	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
卷号	45 期号:11 页码:3967-3972
关键词	OPTICAL MICROSCOPY PHASE IDENTIFICATIONS POLYMERS BEHAVIOR TEXTURE MORPHOLOGY COPOLYMERS DISCLINATIONS POLYMORPHISM POLYETHERS
ISSN号	0032-3861
通讯作者	yang dc
中文摘要	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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000221486300046
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/14743]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
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.