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Sustainable Plant-Based Starch as Binder in Biocomposites: Extraction, Modification, and Their Calorific Behaviour

Adib Hafiizhullah Mohamad Prim Nasir1,2, Mohd Nurazzi Norizan1,2,3,*, Nur Izzaati Saharudin1,2, Sumarni Mansur1,2
1 Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang, 11800, Malaysia
2 Green Bio-polymer, Coatings & Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang, 11800, Malaysia
3 Research Collaboration Center for Nanocellulose, BRIN-Andalas University, Padang, 25163, Indonesia
* Corresponding Author: Mohd Nurazzi Norizan. Email: email

Journal of Renewable Materials https://doi.org/10.32604/jrm.2025.02025-0156

Received 03 September 2025; Accepted 03 December 2025; Published online 04 January 2026

Abstract

Plant-based starch has emerged as a promising natural binder in biocomposites owing to its biodegradability, renewability, and functional adaptability. This study critically reviews the extraction, modification, and performance of starches derived from sources such as corn, potato, and cassava, with particular attention to their calorific behaviour as measured through bomb calorimetry. Calorimetric analysis provides insight into the energy density and combustion efficiency of starch binders, parameters that influence both processing and End-of-life valorisation of biocomposites. Through physical, chemical, enzymatic, and genetic modifications, the inherent limitations of native starch such as moisture sensitivity and low mechanical strength can be mitigated while simultaneously enhancing thermal stability and heat-release characteristics. Among evaluated starches, cassava starch exhibited a comparatively high calorific value of 3661 cal/g (15.3 MJ/kg), confirming its potential for applications in bio-insulation, biofuel, and thermally resilient composites. The integrated understanding of structural modification and calorific response underscores the dual role of starch as both a functional binder and an energetic component, promoting a pathway toward sustainable, energy efficient biocomposite development.

Graphical Abstract

Sustainable Plant-Based Starch as Binder in Biocomposites: Extraction, Modification, and Their Calorific Behaviour

Keywords

Plant-based starch; calorific value; bomb calorimetry; natural binder; biocomposite; sustainability

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