Improvement of β-phase crystal formation in a BaTiO3-modified PVDF membrane

作     者：Lin SHEN Lei GONG Shuhua CHEN Shiping ZHAN Cheng ZHANG Tao SHAO 申林;宫蕾;陈淑花;詹世平;章程;邵涛

作者机构：Department of Environment and Chemical Engineering Dalian University Dalian 116622 People's Republic of China Liaoning Engineering Laboratory for Special Optical Functional Crystals Dalian University Dalian 116622 People' s Republic of China Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 People's Republic of China University of Chinese Academy of Sciences Beijing 100039 People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2018年第20卷第6期

页      面：144-151页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 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）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：financial support from the Opening Project of the State Key Laboratory of Polymer Materials Engineering (Sichuan University) (Grant No.Sklpme2015-4-24) the Provincial Department of Education Science General Foundation of Liaoning (Contract No.L2015017) 

主　　题：PVDF BaTiO3 nanocomposite non-thermal plasma β-phase ferroelectric 

摘      要：In this paper,low temperature plasma is used to modify the surface of barium titanate（BaTiO3）nanoparticles in order to enhance the interfacial compatibility between ferroelectric poly（vinylidene fluoride）（PVDF） and BaTiO3 *** results demonstrate that oxygenic groups are successfully attached to the BaTiO3 surface,and the quantity of the functional groups increases with the treatment ***,the effect of modified BaTiO3 nanoparticles on the morphology and crystal structure of the PVDF/BaTiO3 membrane is *** results reveal that the dispersion of BaTiO3 nanoparticles in the PVDF matrix was greatly improved due to the modification of the BaTiO3 nanoparticles by air *** is worth noting that the formation of a β-phase in a PVDF/modified BaTiO3 membrane is observably promoted,which results from the strong interaction between PVDF chains and oxygenic groups fixed on the BaTiO3 surface and the better dispersion of BaTiO3 nanoparticles in the PVDF ***,the PVDF/modified BaTiO3 membrane at the treatment voltage of 24 k V exhibits a lower water contact angle（≈68.4°） compared with the unmodified one（≈86.7°）.Meanwhile,the dielectric constant of PVDF/BaTiO3 nanocomposites increases with the increase of working voltage.