Effect of seaweed on physical properties of thermoplastic sugar palm starch/agar composites

Jumaidin, Ridhwan and Sapuan, S. M and Jawaid, Mohamad and Ishak, M. R and Sahari, Japar (2016) Effect of seaweed on physical properties of thermoplastic sugar palm starch/agar composites. Journal of Mechanical Engineering and Sciences (JMES). pp. 2214-2225. ISSN 2289-4659

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Abstract

The aim of this paper is to investigate the physical properties of thermoplastic sugar palm starch/agar (TPSA) blend when incorporated with seaweed. The ratio of starch, agar, and glycerol for TPSA was maintained at 70:30:30. Seaweed with various contents (10, 20, 30, and 40 wt.%) were mixed with TPSA matrix via melt mixing before compression were molded into 3 mm plate at 140oC for 10 minutes. The prepared laminates were characterized for moisture absorption, water absorption, thickness swelling, water solubility, and density. The results showed that increasing seaweed loading from 0 to 40 wt% has led to a drop in moisture content from 6.50 to 4.96% and 9% reduction of the density. TPSA matrix showed 52.5% water uptake and 32.3% swelling whereas TPSA/seaweed composites (40 wt% loading) showed 97% water uptake and 74.8% swelling respectively. Higher water solubility was also shown by TPSA/seaweed composites (57 wt%) compared to that of the TPSA matrix (26 wt%). After 16 days of storage, the equilibrium moisture content for TPSA and TPSA/seaweed (40 wt% loading) were 23.2 and 25.2% respectively. In conclusion, TPSA/seaweed composites show good environmental friendly characteristics as a renewable material. In future, the properties of this material can be further improved by hybridization with more hydrophobic fillers for better resistance against water.

Item Type: Article
Subjects: T Technology > T Technology (General)
T Technology > TS Manufactures
Divisions: Faculty of Engineering Technology > Department of Manufacturing Engineering Technology
Depositing User: ENGR RIDHWAN JUMAIDIN
Date Deposited: 25 Oct 2017 02:13
Last Modified: 25 Oct 2017 02:13
URI: http://eprints.utem.edu.my/id/eprint/19900
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