Abstract
Abstract In this study, the impact of particle form of the Cannabis indica plant biofibers and the fiber’s surface tailoring on the physical, thermal, dielectric, and mechanical properties of unsaturated polyester composite specimens manufactured utilizing nonconventional materials were investigated. The mechanical properties such as compressive, flexural, and tensile strengths of the composite specimens were noticed to increase after functionalization of biofiber with acrylic acid and maximum enhancement was found at 20% of biofiber sacking. The physical characterization was concentrated on the assurance of the dielectric constant, dielectric strength, dielectric loss, moisture absorption, chemical resistance, percentage of swelling, limiting oxygen index, and biodegradation of polymer composites under red soil. An increase in dielectric strength from 28 to 29 kV, limiting oxygen index values from 19% to 23%, and moisture/water absorption behavior was noted for resulted bio-composites after surface tailoring of biofiber. To assess the deterioration of the polymeric materials with the temperature, differential scanning calorimetric and the thermogravimetric tests were carried out and enhancement in thermal stability was noted after fortification of polyester composites with functionalized biofiber.
Highlights
Polymers and polymer composites are at present among the most continuously growing materials and there can be no uncertainty that they are vital to present engineering society [1,2,3,4,5]
Cannabis indica fiber (CIF), which is known as Indian hemp fibers, is one of the toughest and stiffest plant fibers
Since no work has been reported on surface functionalization onto CIFs using acrylic acid (AAc) and their subsequent utilization in particle form for fabrication of polymer composites, the present study aims to assess the impacts of AAc graft copolymerization on mechanical, thermal, and dielectric properties of particles of Indian hemp fiber-reinforced polyester composites
Summary
Polymers and polymer composites are at present among the most continuously growing materials and there can be no uncertainty that they are vital to present engineering society [1,2,3,4,5]. In the last few years, investigation into these polymeric materials has been directed on exceptionally tough and durable polymer composites, yet on inexhaustible, biocompatible, biodegradable, and sustainable biomaterials [6,7,8,9,10]. Different kinds of biomass such as plant fibers are a type of biocompatible and sustainable materials that could be utilized to develop biodegradable materials including composites that satisfy cost, density, and strength requirements [11,12,13,14]. An enormous number of biofibers such as banana, sisal, coir, Grewia optiva, hemp fibers, and so forth have been investigated and utilized for the development of composite materials [15,16,17,18]. Cannabis indica fiber (CIF), which is known as Indian hemp fibers, is one of the toughest and stiffest plant fibers
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