Slow release of urea encapsulated by starch PVA matrix

Lum, Yip Hing and Shaaban, Azizah and Mohamad, Noraiham and Dimin @ Mohd Amin, Mohd Fairuz (2016) Slow release of urea encapsulated by starch PVA matrix. Key Engineering Materials, 707. pp. 28-31. ISSN 1662-9795

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Abstract

The hydrophobicity of starch/PVA blend was improved by crosslinking with boric acid.It was found that the swelling ratio of the boric acid modified starch/PVA matrix decreased as function of boric acid concentration. FTIR spectra and SEM images demonstrated that the urea had been encapsulated in polymer matrix successfully.The urea release characteristic was explained with respect to the swelling ratio and crosslinking density of polymer matrix.In addition,the matrix displayed a good barrier for controlling the release rate of urea from pellet.

Item Type:	Article
Uncontrolled Keywords:	Boric acid, Polyvinyl alcohol, Slow release, Starch, Urea
Subjects:	T Technology > T Technology (General) T Technology > TP Chemical technology
Divisions:	Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User:	Mohd. Nazir Taib
Date Deposited:	31 Jan 2019 07:06
Last Modified:	25 Jul 2023 16:40
URI:	http://eprints.utem.edu.my/id/eprint/21584
Statistic Details:	View Download Statistic

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