Polar crystalline phases of PVDF induced by interaction with functionalized boron nitride nanosheets

被引：35
作者：
Guo, Fuhai [1 ,2 ,3 ]
Zhao, Jian [1 ,2 ,3 ,4 ,5 ]
Li, Feixiang [1 ,2 ,3 ]
Kong, Deyu [1 ,2 ,3 ]
Guo, Hongge [1 ,2 ,3 ]
Wang, Xin [1 ,2 ,3 ]
Hu, Haiqing [1 ,2 ,3 ]
Zong, Lingbo [1 ,2 ,3 ]
Xu, Junting [6 ]
机构：
[1] Qingdao Univ Sci & Technol, Key Lab Rubber Plast, Minist Educ, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
[2] Qingdao Univ Sci & Technol, Shandong Prov Key Lab Rubber Plast, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
[3] Qilu Univ Technol, China & Sch Mat Sci & Engn, Shandong Acad Sci, Jinan 250353, Peoples R China
[4] Hangzhou Normal Univ, Key Lab Organosilicon Chem & Mat Technol, Minist Educ, Hangzhou 311121, Peoples R China
[5] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
[6] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China
来源：
CRYSTENGCOMM | 2020年 / 22卷 / 37期
基金：
中国国家自然科学基金;
关键词：
ENHANCED THERMAL-CONDUCTIVITY; MULTIWALLED CARBON NANOTUBES; PIEZOELECTRIC BETA-POLYMORPH; POLY(VINYLIDENE FLUORIDE); GRAPHENE OXIDE; NANOCOMPOSITE; COMPOSITES; POLYMERS; KINETICS; GELATION;
D O I：
10.1039/d0ce01001d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Due to their unique structure and excellent physical properties, boron nitride nanosheets (BNNSs) are often used as nano-reinforcing fillers for polymeric composites. In this work, hydroxyl-modified boron nitride nanosheets (OH-BNNSs) and amino-functionalized boron nitride nanosheets (NH2-BNNSs) were blended with poly(vinylidene fluoride) (PVDF) via a solution casting method to form PVDF/OH-BNNS and PVDF/NH2-BNNS nanocomposites. Differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and Fourier transform infrared spectroscopy (FTIR) show that the addition of OH-BNNSs has little influence on the crystal structure of PVDF, and non-polar alpha-crystals are mainly formed in the PVDF/OH-BNNS nanocomposites, whereas the incorporation of a small amount of NH2-BNNSs can cause exclusive formation of polar beta- and gamma-phases. X-ray photoelectron spectroscopy (XPS) and FTIR reveal that there exists a stronger interaction between PVDF and NH2-BNNSs than that between PVDF and OH-BNNSs in both solid and melt states, which is responsible for the transformation of the crystalline phase and the accelerated crystallization of PVDF/NH2-BNNS nanocomposites.
引用
收藏
页码：6207 / 6215
页数：9
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