Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids

doi:10.1021/acs.macromol.8b02087

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids
	Guan, JP ; Shen, JQ ; Chen, XR ; Wang, HT ; Chen, Q ; Li, JY ; Li, YJ
刊名	MACROMOLECULES
	2019
卷号	52 期号:1 页码:385—394
关键词	BLOCK-COPOLYMERS PHASE-BEHAVIOR DIELECTRIC COMPOSITES CONDUCTIVITY FLUORIDE) MEMBRANES GRAPHENE NANOSTRUCTURATION POLYMERIZATION NANOCOMPOSITES
ISSN号	0024-9297
DOI	10.1021/acs.macromol.8b02087
文献子类	期刊论文
英文摘要	The effects of incorporating two imidazolium-type ionic liquids (ILs), 1-vinyl-3-butylimidazolium bis-(trifluoromethylsulfonyl)imide (IL-TFSI) and 1-vinyl-3-butylimidazolium chloride (IL-Cl), on the crystal forms and phase microstructures of poly(vinylidene fluoride-co-hexafluoropropylene), P(VDF-co-HFP), were investigated. No change in the crystal form was observed with the incorporation of IL-TFSI because of the selective interaction between the IL and HFP moieties of the P(VDF-co-HFP) molecular chains. In contrast, the incorporation of IL-Cl induces an alpha-to-beta crystal form transition because of the interactions between IL-Cl and the VDF moieties. Furthermore, the incorporation of IL-TFSI led to distinct phase separation of P(VDF-co-HFP), whereas a homogeneous phase structure was maintained with the incorporation of IL-Cl. Element mapping images reveal that the specific interactions of IL-TFSI with the HFP moieties induce enrichment of the HFP moieties, which results in well-defined HFP/IL-TFSI nanodomains in the P(VDF-co-HFP) matrix. In contrast, a homogeneous morphology was observed in the P(VDF-co-HFP)/IL-Cl- blends. The smaller anion of IL-Cl can interact with VDF moieties and form a thermodynamically miscible state with the P(VDF-co-HFP) matrix. In addition, ILs chemically grafted on P(VDF-co-HFP) were in situ synthesized using electron-beam irradiation of the blends of P(VDF-co-HFP) with ILs at room temperature because both ILs contain double bonds. The phase structures of the IL-grafted copolymers were further studied. After chemical grafting and melting, the original microphase-separated structure of the P(VDF-co-HFP)/IL-TFSI blends was maintained, whereas discrete nanodomains with diameters of 10-20 nm were formed for the original homogeneous P(VDF-co-HFP)/IL-Cl blends. The interesting crystal forms and phase structures of P(VDF-co-HFP) physically or chemically incorporated with different ILs demonstrate the effectiveness of this strategy for the design of polymer microstructures using simple blending and radiation-induced grafting processes.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31535]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China 2.Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, 16 Xuelin Rd, Hangzhou 310036, Zhejiang, Peoples R China;
推荐引用方式 GB/T 7714	Guan, JP,Shen, JQ,Chen, XR,et al. Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids[J]. MACROMOLECULES,2019,52(1):385—394.
APA	Guan, JP.,Shen, JQ.,Chen, XR.,Wang, HT.,Chen, Q.,...&Li, YJ.(2019).Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids.MACROMOLECULES,52(1),385—394.
MLA	Guan, JP,et al."Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids".MACROMOLECULES 52.1(2019):385—394.