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Journal of Polymers and the Environment

, Volume 26, Issue 5, pp 1950–1961 | Cite as

A Novel Hybrid 2,4-Dichlorophenoxy Acetate Bead from Modified Cassava Starch and Sodium Alginate with Modified Natural Rubber Coating

  • Sa-Ad Riyajan
Original Paper

Abstract

A novel herbicide bead was developed by phase separation, utilizing modified cassava starch (CSt), sodium alginate (SA) and 2,4-dichlorophenoxy acetate (2,4 DA), and the beads were also coated with natural rubber grafted with cassava starch (NR-graft-CSt) to aid their water resistance. The alginate gel beads with 65% entrapped 2,4 DA showed 90% release within 24 h. The incorporation of CSt in the beads markedly improved their encapsulation efficiency to 98% and sustained the release of the herbicide for 700 h. The water resistance was improved by coating the beads with NR-graft-CSt when compared with the pure CSt/SA bead. The synthesized bead has excellent potential for agricultural applications.

Keywords

Polysaccharide Cassava starch Biodegradation polymer Agriculture Reactive agent Natural rubber 

Notes

Acknowledgements

The author gratefully acknowledges the financial support provided by Thammasat University Research fund under the TU research scholar scheme and Center of Scientific Equipment for Advanced Research, 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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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

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

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