Morphology, Thermal and Mechanical Property of Thermoplastic Starch Biocomposite

Abstract:

Thermoplastic starch bio-composite compound of cross-linked cassava starch has been produced by a twin screw extruder. Rice husk powder, bacterial cellulose fiber and glycerol were incorporated into the starch at various compositions. Bio-composite compounds were thermally compressed into a mechanical test specimen. Influences of reinforcing materials and plasticizer contents were investigated. An extrusion (160°C) and compression (200°C) at higher temperature produced a greater structural deformation of the cross-linked starch than a processing at lower temperature. Morphology of the bio-composite showed a homogeneous distribution of reinforcement in the matrix at high temperature processing and showed good adhesion between rice husk particle, bacterial cellulose fiber and starch matrix. Flexural and tensile mechanical properties of the bio-composite significantly improve with only 0.71%wt bacterial cellulose incorporation.

• Periodical: Materials Science Forum (Volume 1100)
• Pages: 25-31
• DOI: https://doi.org/10.4028/p-1IOiAy
• Online since: October 2023
• Authors: Sirisart Ouajai*, Preedawadee Supingkalad, Thanyarat Teropass
• Keywords: Bacterial Cellulose, Mechanical Properties, Modified Starch, Rice Husk

References

[1] M. Shams, I. Alam, Md S. Mahbub, Plastic pollution during COVID-19: Plastic waste directives and its long-term impact on the environment, Environmental Advances, 5 (2021), 100119.

DOI: 10.1016/j.envadv.2021.100119

[2] E. Pérez‐Pacheco, J. C. Canto‐Pinto, V. M. Moo‐Huchin, I. A. Estrada‐Mota, R. J. Estrada‐León, L. Chel‐Guerrero Thermoplastic Starch (TPS)‐Cellulosic Fibers Composites: Mechanical Properties and Water Vapor Barrier: A Review, in Matheus, Poletto (Ed) Composites from Renewable and Sustainable Materials, IntechOpen, Rijeka, (2016), 85-105.

DOI: 10.5772/65397

[3] A. Surendren, A. K. Mohanty, Q. Liu and M. Misra A review of biodegradable thermoplastic starches, their blends and composites: recent developments and opportunities for single-use plastic packaging alternatives, Green Chem, (2022) 24, 8606-8636.

DOI: 10.1039/d2gc02169b

[4] A. Stanislawska Bacterial nanocellulose as a microbiological derived nanomaterials, Advances in Materials Science (2016) 16(4), 45-57.

[5] I. M.G. Martins, S. P. Magina, L. Oliveira, C. S.R. Freire, A. J.D. Silvestre, C. P. Neto, A. Gandini, New biocomposites based on thermoplastic starch and bacterial cellulose, Composites Science and Technology, (2009) 69(13), 2163-2168

DOI: 10.1016/j.compscitech.2009.05.012