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http://dx.doi.org/10.9713/kcer.2021.59.3.443

Manufacturing and Characteristics of Biodegradable Materials Based on Starch-Citric Acid for Anti-Particulate Scattering  

Lee, Ji Sung (Division of Chemical Engineering and Bioengineering, Kangwon National University)
Lee, Won Gyu (Division of Chemical Engineering and Bioengineering, Kangwon National University)
Publication Information
Korean Chemical Engineering Research / v.59, no.3, 2021 , pp. 443-449 More about this Journal
Abstract
A biodegradable shatterproof thin film material having excellent water resistance and applicability was prepared by crosslinking through esterification of starch and citric acid. In order to improve the thin film formation and physical properties of these materials, PVA and glycerin were added to secure the flexibility of the applied thin film. In addition, conditions for optimizing material functionality such as swelling degree and solubility in water according to reaction time, temperature, and concentrations of raw materials and additives were analyzed. The crosslinking reaction of starch and citric acid was confirmed by FT-IR analysis, and it was found that single and multiple esterification reactions occurred simultaneously in these reaction processes. It can be seen that the crosslinked starch-citric acid thin film material was decomposed about 95% after 12 weeks after landfilling, and thus biodegradability was excellent.
Keywords
Starch; Citric Acid; Esterfication; Anti-Particulate Scattering; Biodegradable Material;
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