Enhanced dielectric properties of freestanding, flexible, hydrophobic cellulose/poly(vinylidene fluoride) composite films

被引：7

作者：

Jangra, Mandeep ^{[1
]}

Thakur, Abhishek ^{[1
]}

Dam, Siddhartha ^{[1
]}

Hussain, Shamima ^{[1
]}

机构：

[1] Univ Madras, UGC, DAE CSR, Kokilamedu, Tamil Nadu, India

来源：

JOURNAL OF POLYMER SCIENCE | 2023年 / 61卷 / 04期

关键词：

cellulose; dielectric properties; flexible free-standing film; nanogenerator; poly(vinylidene fluoride); polymer composites; triboelectricity; ELECTRICAL-CONDUCTIVITY; FT-IR; PVDF; CELLULOSE; BATIO3;

D O I：

10.1002/pol.20220512

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Freestanding, composite films of poly(vinylidene fluoride) (PVDF) and cellulose were synthesized and characterized for morphological, microstructural, vibrational and dielectric properties. The thickness of the freestanding films was found to be similar to 38 mu m. Contact angle measurements showed the hydrophobic nature of the composite films. Fourier transformed infrared (FTIR) spectroscopy confirmed the reduction in the alpha phase content of the PVDF films with the addition of fillers. The measured dielectric constant of the composite films was found to be more than two times than that of the pristine films An increase in the dielectric constant of the composite films was attributed to the Maxwell-Wagner-Sillars (MWS) polarization. A triboelectric nanogenerator (TENG) operating in a vertical contact-separation configuration was fabricated using these composite films. A maximum output power density of similar to 6 mu W/cm(2) was achieved from the TENG fabricated using the composite films.

引用

页码：334 / 345

页数：12