Structure tailorable triple-phase and pure double-polar-phase flexible IF-WS_(2)@poly(vinylidene fluoride)nanocomposites with enhanced electrical and mechanical properties

作     者：Dong Guo Kai Cai Pingye Deng Guoning Si Liangying Sun Fahui Chen Honglong Ning Li Jin Jingtao Ma 

作者机构：School of Medical Instrument&Food EngineeringUniversity of Shanghai for Science&TechnologyShanghai200093China School of Materials Science&EngineeringBeihang UniversityBeijing100191China Beijing Center for Physical and Chemical AnalysisBeijing100089China Institute of Polymer Optoelectronic Materials and DevicesState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou510640China Electronic Materials Research LaboratorySchool of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an710049China State Key Laboratory of New Ceramics and Fine ProcessingTsinghua UniversityBeijing100084China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2020年第6卷第3期

页      面：563-572页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.11574346) Fundamental Research Funds for the Central Universities Discipline Construction Project of Science and Technology Council of Shanghai Open Foundation State Key Laboratory of Luminescent Materials and Devices(No.2019-skllmd-02) Open Foundation of the State Key Laboratory of New Ceramics and Fine Processing of Tsinghua University(No.KF201809) 

主　　题：PVDF Polymorph Permittivity Piezoelectricity Flexibility 

摘      要：A new low-cost high-permittivity flexible nanocomposite consisting of a polyvinylidene fluoride(PVDF)matrix and fullerene-like tungsten disulfide nanoparticle(IF-WS2 NP)filler was fabricated via a simple solution route.A comprehensive investigation by X-ray diffraction,attenuated total reflection-infrared spectroscopy,and differential scanning calorimetry(DSC)showed that 0.5e1 vol% of IF-WS_(2) induced a nonpolar α-phase to coexisting triple-phase transition in PVDF,whereas a slightly higher loading of 2 vol% induced pure double-polar β- and γ-*** results indicate that the structure and properties of the fabricated nanocomposite are easily *** during heating and cooling cycles and morphology observations further indicated that a polar phase was induced by the nucleation effect of the IF-WS2 NPs and electrostatic *** a consequence of the multiphase coexistence and structure homogeneity,nanocomposites with approximately 0.5-1 vol% of IF-WS_(2) NPs showed enhanced dielectric and energy-storage performance as well as enhanced tensile strength and *** new phase-tailorable nanocomposites with balanced properties are promising for applications as energystorage capacitors,piezoelectric sensors,and other flexible multifunctional *** results of this study will serve to deepen the understanding of the polymer polymorph and provide directions on new routes for fabrication of smart materials.