Journal of Polymers and the Environment

, Volume 26, Issue 7, pp 2845–2854 | Cite as

A Novel Packaging Film from Cassava Starch and Natural Rubber

  • Sa-Ad Riyajan
  • Sumintra Patisat
Original Paper


Currently, there is an environmental pollution problem generated in part by packaging materials produced from non-biodegradable synthetic polymers made from petroleum. However, these can be replaced with biodegradable materials made from cassava starch (CS) and natural rubber (NR). In the work described, a novel biopolymer film was obtained from the CS and NR using glycerol (GE) as a plasticizer in a water-based system. The physical properties of an 95/5 CS/NR blend films with the addition of NR and with varying GE contents were studied based on their swelling ratio, moisture content, moisture absorption, mechanical properties and biodegradability in soil. The results showed that the moisture content and moisture absorption tended to be directly proportional to the GE content, while the moisture content and moisture absorption of the sample decreased as a function of the NR content. The swelling ratio of the 95/5 CS/NR blend slightly decreased as a function of the NR and GE content. Surprisingly, the best swelling ratio of 350% was found at 10% NR. The elongation at break of the CS/NR blend was improved by the addition of GE. The contact angle of the 95/5 CS/NR blend decreased as a function of the GE. With increased NR in the composite, an increasing, trend in the contact angle was found. Further, the 95/5 CS/NR blend exhibited good transparency when it was applied as a coating to delay the ripening of bananas, the results were positive. Moreover, the film showed decomposition well in natural soil.


Packaging film Blend Biodegradation Plasticizer Fruit Plasticizer 



The author gratefully acknowledges the financial support provided by Thai Government Research Fund Contract No. 8/2017 and the Center of Scientific Equipment for Advanced Research, Thammasat University and Center of Scientific Equipment, Faculty of Science and Technology, Thammasat University. This study was supported by The Thailand Research Fund/Prince of Songkla University/Thammasat University for financial support (RSA5780018) and Thammasat University.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of Science and TechnologyThammasat UniversityPathumthaniThailand

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