Title: Investigation of thermal properties of sisal/glass fibre hybrid composite with inclusion of graphene nano-platelets

Authors: Amrita Maddamasetty; Prathyusha Mathi; Jayasree Gudivada; Malavika Koneti; Rohith Battina Venkata Satya Sai Narasimha

Addresses: Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (A), India ' Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (A), India ' Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (A), India ' Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (A), India ' Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (A), India

Abstract: Hybridisation of natural and synthetic fibres results in leverage of the complementary strengths of each type of fibre resulting in enhanced properties. The work aims to create natural fibre composite (sisal), synthetic fibre composite (glass), and hybrid fibre composite (sisal/glass) to take advantage of both natural and synthetic fibres. To further enhance the properties of the composites different weight percentages of graphene nanoparticles (0.25wt%, 0.50wt%, 0.75wt%, 1wt%) are incorporated into the hybrid composite. The thermal properties of composites are evaluated using thermogravimetric analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) tests. 1.0wt% hybrid composite showed improved thermal stability with 13.89%, 10.03% and 10.46% decrease in weight loss% compared to hybrid composite without graphene at temperatures 250°C, between 250°C and 450°C and above 450°C respectively. It also showed a 53.5% improvement in char yield value over hybrid composite.

Keywords: graphene; nano platelets; thermal analysis; glass transition temperature; crystallisation temperature; melting temperature; weight loss; char yield; degradation temperature; thermal stability.

DOI: 10.1504/IJMATEI.2026.155499

International Journal of Materials Engineering Innovation, 2026 Vol.17 No.3, pp.237 - 252

Received: 18 Apr 2024
Accepted: 12 Jul 2024
Published online: 04 Aug 2026 *

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