Effect of palm wax on the mechanical, thermal, and moisture absorption properties of thermoplastic cassava starch composites

Jumaidin, Ridhwan and Kamaruddin, Zatil Hafila and Selamat, Mohd Zulkefli and Md Yusof, Fahmi Asyadi and Ahmad Ilyas, Rushdan (2022) Effect of palm wax on the mechanical, thermal, and moisture absorption properties of thermoplastic cassava starch composites. International Journal of Biological Macromolecules, 194. pp. 851-860. ISSN 0141-8130

Text STARCH-PALM WAX- ELSEVIER-REDUCE.PDF Restricted to Registered users only Download (531kB)

Abstract

Thermoplastic starch is a potentially sustainable and biodegradable material. However, it possesses some limitations in terms of mechanical performance and high moisture sensitivity. In this current work, the characteristics of thermoplastic cassava starch (TPCS) containing palm wax at various loading were evaluated. TPCS was prepared via hot pressing by varying the ratios of palm wax (2.5, 5, 10, and 15 wt%). Next, characterization via scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FT-IR), mechanical, water solubility, thickness swelling and moisture absorption tests, were conducted on the samples. The findings showed that incorporating starch-based thermoplastics with palm wax has remarkably improved mechanical characteristics of the thermoplastic blends. Besides, the morphology of the samples demonstrated irregular and rougher cleavage fracture after palm wax addition. FT-IR indicated the existence of intermolecular interaction between TPCS and palm wax with the intermolecular hydrogen bonds that existed between them. The thermal stability of TPCS has improved with rising palm wax content. The incorporation of 15 wt% palm wax resulted in the lowest moisture absorption value among the samples. Overall, the developed TPCS/palm wax with improved mechanical and moisture resistance characteristics has the potential to be used as biodegradable materials.

Item Type:	Article
Uncontrolled Keywords:	Starch, Thermoplastic cassava starch, Palm wax
Divisions:	Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	06 Mar 2023 11:47
Last Modified:	06 Mar 2023 11:47
URI:	http://eprints.utem.edu.my/id/eprint/26270
Statistic Details:	View Download Statistic

Actions (login required)

View Item