Crystallization and orientation of syndiotactic polystyrene in nanorods

doi:10.1021/ma070564o

CORC > 化学研究所 > 中国科学院化学研究所

	Crystallization and orientation of syndiotactic polystyrene in nanorods
	Wu, Hui ; Wang, Wei ; Yang, Huixian ; Su, Zhaohui
刊名	MACROMOLECULES
	2007-06-12
卷号	40 期号:12 页码:4244-4249
ISSN号	0024-9297
DOI	10.1021/ma070564o
英文摘要	Syndiotactic polystyrene (sPS) nanorods of 200 and 80 nm diameters were prepared by infiltrating porous anodic alumina oxide templates with polymer melt, and the crystallinity and orientation of various forms of sPS crystals in the nanorods were studied by FTIR spectroscopy and electron diffraction. For sPS crystallized from amorphous state at lower temperatures, a-form crystals were found in the nanorods with random orientation and the same degree of crystallinity as that in the bulk. However, for sPS crystallized from molten state at 260 degrees C, while no preferred orientation was found for the chains in the melt, the beta-crystals formed in the nanorods oriented preferentially with the c-axis aligning perpendicular to the axial direction of the nanorod, and the degree of crystallinity was significantly lower than that in the bulk. The crystallinity decrease was more profound for nanorods of smaller diameter. These results were also supported by electron diffraction data and can be attributed to competition between nucleation and crystal growth in the nanotemplates.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000247138500024
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/60791]
专题	中国科学院化学研究所
通讯作者	Su, Zhaohui
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Wu, Hui,Wang, Wei,Yang, Huixian,et al. Crystallization and orientation of syndiotactic polystyrene in nanorods[J]. MACROMOLECULES,2007,40(12):4244-4249.
APA	Wu, Hui,Wang, Wei,Yang, Huixian,&Su, Zhaohui.(2007).Crystallization and orientation of syndiotactic polystyrene in nanorods.MACROMOLECULES,40(12),4244-4249.
MLA	Wu, Hui,et al."Crystallization and orientation of syndiotactic polystyrene in nanorods".MACROMOLECULES 40.12(2007):4244-4249.