Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)
Dai, H; Yin, GZ; Zhao, FJ; Bian, ZX; Xu, YJ; Zhang, WB; Miao, XR; Li, H
2017
发表期刊POLYMER
ISSN0032-3861
卷号113页码:46-52
文章类型期刊论文
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.
关键词Fluoropolymers Block Copolymer Phase Separation Hierarchical Structure Self-assembly
DOI10.1016/j.polymer.2017.02.011
收录类别SCI
语种英语
WOS记录号WOS:000398430000006
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27323
专题中科院上海应用物理研究所2011-2018年
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GB/T 7714
Dai, H,Yin, GZ,Zhao, FJ,et al. Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)[J]. POLYMER,2017,113:46-52.
APA Dai, H.,Yin, GZ.,Zhao, FJ.,Bian, ZX.,Xu, YJ.,...&Li, H.(2017).Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates).POLYMER,113,46-52.
MLA Dai, H,et al."Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)".POLYMER 113(2017):46-52.
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