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Controlled release of the herbicide simazine from computationally designed molecularly imprinted polymers
Cranfield University, Institute BioScience and Technology, Silsoe MK45 4DT, Beds, England; .
Cranfield University, UK.ORCID iD: 0000-0002-1815-9699
Cranfield University, UK.ORCID iD: 0000-0002-1815-9699
Cranfield University, Institute BioScience and Technology, Silsoe MK45 4DT, Beds, England; .
2005 (English)In: Journal of Controlled Release, ISSN 0168-3659, E-ISSN 1873-4995, Vol. 108, no 1, 132-139 p.Article in journal (Refereed) Published
Abstract [en]

The present study describes the development of materials suitable for environmental control of algae. Molecularly imprinted polymers (MIPs) were used as simazine carriers able to provide the controlled release of simazine into water. Three polymers were designed using computational modelling. The selection of methaerylic acid (MA) and hydroxyethyl methacrylate (HEM) as functional monomers was based on results obtained using the Leapfrog algorithm. A cross-linked polymer made without functional monomers was also prepared and tested as a control. The release of simazine from all three polymers was studied. It was shown that the presence of functional monomers is important for polymer affinity and for controlled release of herbicide. The speed of release of herbicide correlated with the calculated binding characteristics. The high-affinity MA-based polymer released similar to 2% and the low-affinity HEM-based polymer released similar to 27% of the template over 25 days. The kinetics of simazine release from HEM-based polymer show that total saturation of an aqueous environment could be achieved over a period of 3 weeks and this corresponds to the maximal simazine solubility in water. The possible use of these types of polymers in the field of controlled release is discussed. (c) 2005 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2005. Vol. 108, no 1, 132-139 p.
Keyword [en]
molecular imprinting; computational modelling; simazine; herbicide; controlled release
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-65184DOI: 10.1016/j.jconrel.2005.07.016ISI: 000233321200013OAI: oai:DiVA.org:liu-65184DiVA: diva2:395051
Available from: 2011-02-04 Created: 2011-02-04 Last updated: 2017-12-11

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