Membrane-encapsulated controlled-release urea fertilizers based on acrylamide copolymers

Abraham, Joshua ; Rajasekharan Pillai, V. N. (1996) Membrane-encapsulated controlled-release urea fertilizers based on acrylamide copolymers Journal of Applied Polymer Science, 60 (13). pp. 2347-2351. ISSN 0021-8995

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1...

Related URL: http://dx.doi.org/10.1002/(SICI)1097-4628(19960627)60:13<2347::AID-APP6>3.0.CO;2-E

Abstract

About 40-70% of the applied urea fertilizer is lost to the environment, causing serious pollution. Controlled-release technology is useful in increasing the efficiency of fertilizer urea as well as in checking environment pollution. Four laboratory-level controlled-release urea fertilizers were formulated based on polymers which are soil conditioners and then evaluated for their slow-release property. Urea was coated with the copolymer of acrylamide and divinylbenzene/N,N'-methylenebisacrylamide /tetraethyleneglycol diacrylate or pentaerythritol triacrylate and sealant materials (wax and polystyrene). Urea coated with co-polymer of acrylamide-tetraethyleneglycol diacrylate was found to be having a better slow-release property among the systems prepared.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
ID Code:38557
Deposited On:23 May 2011 06:35
Last Modified:23 May 2011 06:35

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