Effect of glycerol on mechanical and water barrier properties of cassava starch/PVA composite films

Arie Listyarini, Vivi Fauzia, Cuk Imawan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Biodegradable and non-toxic plastic as food packaging is used instead of conventional plastic. One of biodegradable and non-toxic plastic can be made from cassava starch and PVA. This paper reports the results of a study of the effect of glycerol content on the mechanical and water barrier properties of cassava starch/Polyvinyl alcohol (PVA) composite films. The composite films of cassava starch/PVA were prepared with a solution casting method by the addition of glycerol or not. Glycerol concentrations in composite films varied from 10, 20 and 30% by weight of the polymer in the mixture. Mechanical and water barrier properties of cassava starch/PVA were analyzed. Film transparency was analyzed using a UV-Vis spectrophotometer. Changes in the functional groups on the FTIR spectra of composite films were also observed. Tensile strength decreased with increasing glycerol concentration on composite films but increased the elongation. The addition of glycerol decreased the water barrier properties by increasing the rate of transmission of water vapor from cassava starch/PVA composite films. Film transparency increased with the addition of 10% and 20% glycerol then decreases when the addition of 30% glycerol. Mechanical and water barrier properties of the composite films indicated that the addition of glycerol modified their properties significantly.

Original languageEnglish
Title of host publication2nd International Conference on Physical Instrumentation and Advanced Materials 2019
EditorsHerri Trilaksana, Sulaiman Wadi Harun, Cameron Shearer, Moh Yasin
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440562
DOIs
Publication statusPublished - 9 Dec 2020
Event2nd International Conference on Physical Instrumentation and Advanced Materials, ICPIAM 2019 - Surabaya, Indonesia
Duration: 22 Oct 2019 → …

Publication series

NameAIP Conference Proceedings
Volume2314
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Conference on Physical Instrumentation and Advanced Materials, ICPIAM 2019
CountryIndonesia
CitySurabaya
Period22/10/19 → …

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