Facile synthesis and hierarchical assembly of polystyrene-block- poly   (perfluorooctylethyl acrylates)

doi:10.1016/j.polymer.2017.02.011

CORC > 北京大学 > 化学与分子工程学院

	Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)
	Dai, Hui ; Yin, Guang-Zhong ; Zhao, Fang-Jia ; Bian, Zhong-Xuan ; Xu, Yu-Jie ; Zhang, Wen-Bin ; Miao, Xia-Ran ; Li, Hui
刊名	POLYMER
	2017
关键词	Fluoropolymers Block copolymer Phase separation Hierarchical structure Self-assembly DRIVING FORCES DIBLOCK COPOLYMERS PHASE-SEPARATION THIN-FILMS CHAIN CRYSTALLIZATION NANOSCALE POLYMERIZATION CONFINEMENT LAMELLAE
DOI	10.1016/j.polymer.2017.02.011
英文摘要	Hierarchical assembly of macromolecules has been central in creating complex nanostructures. In this work, polystyrene-block-poly (perfluorooctylethyl acrylates) (PS-b-PFOA) diblock copolymers were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization and shown to assemble into hierarchical structures in bulk with the interplay of nanophase separation and crystallization. The molecular weights were determined by gel permeation chromatography (GPC) and H-1 NMR spectra. The phase-separated nanostructures of these block copolymers were investigated via small angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) in reciprocal space and by transmission electron microscopy (TEM) in real space. The results showed that well-ordered lamellar morphologies were formed in the bulk of samples with volume fraction of PFOA (f(PFOA)) around 0.390-0.538. Within the PFOA layers, the side chains were found to further crystallize, forming crystalline layers with thicknesses about twice that of the length of fluorinated side-chains. The SAXS patterns from sheared samples further show that the orientation of crystalline layers was perpendicular to the lamellar layers formed by micro-phase separation. (C) 2017 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [11505272]; SCI(E); ARTICLE; 46-52; 113
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474492]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Dai, Hui,Yin, Guang-Zhong,Zhao, Fang-Jia,et al. Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)[J]. POLYMER,2017.
APA	Dai, Hui.,Yin, Guang-Zhong.,Zhao, Fang-Jia.,Bian, Zhong-Xuan.,Xu, Yu-Jie.,...&Li, Hui.(2017).Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates).POLYMER.
MLA	Dai, Hui,et al."Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)".POLYMER (2017).