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Mechanical properties of chitosan modified montmorillonite filled tapioca starch nanocomposite films

Abdul Ghani, Siti Waqina and Abu Bakar, Aznizam and Samsudin, Sani Amril (2013) Mechanical properties of chitosan modified montmorillonite filled tapioca starch nanocomposite films. In: Advanced Materials Research (Volume 686).

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Official URL: https://www.scientific.net/AMR.686.145

Abstract

This study was carried out to develop renewable and degradable plastics film with good mechanical properties. The mechanical properties between compatibilized montmorillonite (MMT)/chitosan filled tapioca starch (TPS), uncompatibilized MMT/TPS, and chitosan/TPS nanocomposite films were investigated. Experimental works were started with the extraction of local chitosan from chitin derived from prawn shells which involving deprotenization, demineralization and deacetylation treatments. Degree of deacetylation of chitosan was determined using infrared spectroscopy method. Chitosan was acted as compatibilizer between MMT and starch in order to improve the dispersion of MMT in nanocomposite systems. Nanocomposite films were prepared using a solution casting method with addition of glycerol as the plasticizer. The starch solution was cast onto PTFE mold with cavity thickness of 0.5mm. Characterizations of the nanocomposite films were done using Fourier Transform Infrared Analysis (FTIR). Tensile properties of nanocomposites were investigated. The compatibilized nanocomposite films, chitosan/MMT/TPS give significant effects to tensile properties. Chitosan has played its role as the compatibilizer and also as flexibility improvers to nanocomposite films because elongation at break improved after addition of chitosan.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:chitosan, mechanical property, montmorillonite, starch nanocomposite films, tapioca starch
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:51161
Deposited By: Haliza Zainal
Deposited On:27 Jan 2016 01:53
Last Modified:03 Sep 2017 11:30

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