The Effect of Etherification Agent on the Mechanical Properties of Sodium Carboxymethyl Cellulose-based Bioplastic and Its Application As Fruit Packaging

Document Type : Original Article

Authors

1 State Islamic Institut of Religion Bone, Watampone-Indonesia Jalan. HOS Cokroaminoto No 1, Watampone-Indonesia

2 Department of Chemistry, Faculty of Mathematics and Natural Science, University of Hasanuddin, Jalan. Perintis Kemerdekaan 90245, Makassar-Indonesia

3 Chemistry Department, Mathematics and Natural Sciences, Hasanuddin University, Makassar, Indonesia

4 Department of Chemistry, Faculty of Mathematics and Natural Sciences, Hasanuddin University

5 Research Center for biomaterial, BRIN, Cibinong Jawa Barat16911, Indonesia

Abstract

This study aimed to determine the optimum conditions of sodium chloroacetate (SCA) as an etherification agent, to obtain sodium carboxymethyl cellulose (SCC) bioplastic with a significant mechanical property. In this study, the SCC has been synthesized and concentration of SCA was optimized. SCC was synthesized through etherification reaction using SCA as etherification agent. The SCC synthesis was carried out in a dry system consisting of alkalization and carboxymethylation steps. SCA optimization was determined based on the levels of SCC and degree of substitution (DS). The synthesis and characterization of SCC bioplastics has also been carried out.The result obtained were SCC with a level of 88% and a degree of substitution of 1.50. The best mechanical properties of bioplastic were shown at 6% SCA concentration with 9.91 MPa tensile strength and 9% elongation. The degradation test result showed that bioplastic experienced a mass reduction of 17.30% over a period of 21 days. SCC bioplastic application as fruit packaging can reduce the mass of citrus fruits by 10.5% for 10 days of storage.

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History

  • Receive Date: 28 June 2021
  • Revise Date: 30 July 2021
  • Accept Date: 17 September 2022

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