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

作者：Riyajan Sa Ad^*

来源：Journal of Polymers and the Environment, 2018, 26(5): 1950-1961.

DOI：10.1007/s10924-017-1084-4

• Polysaccharide
• Cassava starch
• Biodegradation polymer
• Agriculture
• Reactive agent
• Natural rubber

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.

• 出版日期2018-5