Largely enhanced energy storage density of poly(vinylidene fluoride) nanocomposites based on surface hydroxylation of boron nitride nanosheets

Abstract

PVDF/OH-BNNS nanocomposites show improved dielectric, thermal and mechanical properties through cooperation with surface hydroxylated BNNSs.

Novel Poly(m‐phenyleneisophthalamide) Dielectric Composites with Enhanced Thermal Conductivity and Breakdown Strength Utilizing Functionalized Boron Nitride Nanosheets

“…Figure a depicts representative stress–strain curves for pure PMIA and PMIA/fBNNSs nanocomposites. The elongations of tested samples are decreased with increasing content of fBNNSs, it can be assigned to the reason that the continuous phase structure of PMIA matrix was destroyed . Figure b reveals corresponding tensile strength and modulus of specimens.…”

“…The FTIR spectra of BNNSs, BNNSs‐OH and fBNNSs are presented in Figure a. BNNSs displays characteristic absorption peaks at 1357 and 788 cm −1 , which are due to the stretching vibration and bending vibration of BN, respectively . For BNNSs‐OH, an obvious absorption peak corresponding to hydroxyl group emerges at 3208 cm −1 , testifying the heat treatment is an effective and maneuverable technique for hydroxylation of BNNSs.…”

Interface design for high energy density polymer nanocomposites

“…[64][65][66][67] In polymer based nanocomposites, the ability to enhance dispersion of nanofillers and tailor the interfacial properties remain important technical challenges to be addressed [68][69][70] and the surface modification of fillers with a variety of organic modifiers is an effective approach to overcome these issues. 71,72 Organic modifiers can be physically adsorbed onto the filler surface through electrostatic interactions or by hydrogen bonding. A variety of modifiers have been used, as shown in Fig.…”

Sandwich-structured poly(vinylidene fluoride-hexafluoropropylene) composite film containing a boron nitride nanosheet interlayer

“…For example, BNNSs are directly added to the matrix, which resulted in a signicantly improved breakdown eld strength. 21,25,26 Most of these work is centered around the direct compounding of llers and polymer materials, as well as the uniform distribution of llers in polymer composite lms. However, the structural design of lm is rarely studied.…”