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Preparation, dielectric and a.c. conductivity studies on chemically treated sisal powder filled polyvinyl alcohol biocomposites

Archana Nigrawal, +1 more
- 13 Dec 2012 - 
- Vol. 4, Iss: 2, pp 191-209
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TLDR
In this paper, the development and electrical characterization of sisal powder-filled polyvinyl alcohol (PVA) composites is reported, and the effects of temperature and frequency variation on dielectric constant (e' and dissipation factor (tan δ) and on a.c. conductivity (σa.c.) were determined.
Abstract
In this paper, development and electrical characterization of sisal powder filled polyvinyl alcohol (PVA) composites is reported. Dielectric measurements were conducted on these composites on a LCR meter in the temperature range from 30 to 150 °C and in the frequency range 1 kHz - 10 kHz. The effects of temperature and frequency variation on dielectric constant (e’), dielectric dissipation factor (tan δ) and on a. c. conductivity (σa.c.) were determined. On increasing the filler content, dielectric constant increased, it was mainly due to motion of the dipolar groups of the interfacial polarization occurring in the composites. The conductivity increased with rise in temperature. Keywords: PVA, Electrical Properties, Dielectric Properties, Electrical Conductivity

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Synergistic reinforcement of poly(vinyl alcohol) nanocomposites with cellulose nanocrystal-stabilized graphene

TL;DR: In this paper, a simple and environmentally friendly process, cellulose nanocrystal-stabilized graphene (CNC) was incorporated into polyvinyl alcohol (PVA) aqueous solutions to obtain PVA-based nanocomposites (GR-CNC/PVA ) by a casting method.
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Thermal properties of palm fiber and palm fiber-reinforced ABS composite

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A comprehensive review on dielectric composites: Classification of dielectric composites

TL;DR: In this paper , the basic principles of dielectric behavior in composites systems have been enumerated in this review, and the reader can also understand how models of polarizations are intertwined with composite fabrication to yield the desired dielectrics properties, and combinations of different components in a composite for addressing engineering solutions.
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Study of the electric properties of palm fiber-reinforced acrylonitrile butadiene styrene composites

TL;DR: In this paper, the electrical properties of the palm fiber-reinforced acrylonitrile butadiene styrene composites were investigated using impedance analysis using an impedance amplifier.
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Electrical Properties of Bamboo Fiber Reinforced Polypropylene Composite: Effect of Coupling Agent

TL;DR: In this paper, the electrical properties of blends from Polypropylene (PP) and bamboo fiber have been studied at various amounts of fiber compositions, and it was shown that PP is more conductive than bamboo fiber.
References
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Journal ArticleDOI

Recent Development in Natural Fiber Reinforced Polypropylene Composites

TL;DR: In this article, the most important natural fibers are jute, flax, and coir and their novel processing technics to develop natural fiber reinforced composites are also described.
Journal ArticleDOI

Thermophysical properties of natural fibre reinforced polyester composites

TL;DR: In this article, the thermal conductivity, diffusivity and specific heat of polyester/natural fiber composites were investigated as function of filler concentration and for several fibre surface treatments.
Journal ArticleDOI

Thermal conductivity and thermal diffusivity analyses of low-density polyethylene composites reinforced with sisal, glass and intimately mixed sisal/glass fibres

TL;DR: The thermal conductivity and thermal diffusivity of sisal-reinforced polyethylene (SRP), GRP and sisal/glass hybrid fiber-reined polyethylenes (GSRP) has been evaluated at cryogenic to high temperature (120-350 K) as mentioned in this paper.
Journal ArticleDOI

Polypropylene—Bamboo/Glass Fiber Hybrid Composites: Fabrication and Analysis of Mechanical, Morphological, Thermal, and Dynamic Mechanical Behavior

TL;DR: In this paper, a hybrid composites of polypropylene reinforced with bamboo and glass fibers (BGRP) were fabricated using an intermeshing counter rotating twin screw extruder followed by injection molding.
Journal ArticleDOI

Dielectric characteristics of sisal–oil palm hybrid biofibre reinforced natural rubber biocomposites

TL;DR: In this article, natural rubber was reinforced with sisal and oil palm fibers and the dielectric properties of the composite were evaluated as a function of fiber loading, frequency and chemical modification of fibers.
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