Determination of Kinetic Parameters and Thermal Characteristics of Epoxy Casuarina Bio Composites

R. Nalini  Suja; B.  Sridevi; Senthil Muthu  Kumar Thiagamani

doi:10.6000/1929-5995.2024.13.09

Authors

R. Nalini Suja Department of Chemistry, Panimalar Engineering College, Chennai 600123,Tamil Nadu, India https://orcid.org/0000-0001-6524-5808
B. Sridevi Department of Chemistry, Presidency College, Chennai-600005, Tamil Nadu, India
Senthil Muthu Kumar Thiagamani Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil–626126, Tamil Nadu, India; Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia and Centre for Advanced Composite Materials (CACM) Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Johor, Malaysia https://orcid.org/0000-0003-1443-7222

DOI:

https://doi.org/10.6000/1929-5995.2024.13.09

Keywords:

Epoxy composites, casuarina leaf fibre, Coats-Redfern(CR), Broido and Horowitz-Metzger(HM) models

Abstract

By reinforcing casuarina equisetifolia leaf, a flexible bio fibre, in different volume proportions of 4%, 8%, 12%, 16%, and 20% into the epoxy resin, a bio-based composite was produced utilizing the hand layup method. FT IR spectrum was used to verify the production of epoxy casuarina composite. The produced composites have undergone an extensive thermal investigation using Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), Derivative Thermogravimetric (DTG) study and Differential Scanning Calorimetry (DSC) analysis. It has been observed that increasing the percentage of casuarina fibre content enhances the thermal stability of epoxy resin. Horowitz- Metzger (HM), Broido and Coats-Redfern (CR) models were worked and the result revealed that the decomposition of casuarina epoxy composite followed one Dimensional Diffusion Model with coefficient of correlation value close to 1. The thermodynamic parameters including Activation energy (Ea), frequency factor (A), Gibbs free energy (ΔG), entropy (ΔS) and enthalpy (ΔH) of epoxy casuarina composites were found to increase with increase in fibre contents. This makes the composite more suitable for making high performance engineering material for various applications.

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