Preparation and characterization of biodegradable gelatin-PAAm-based IPN hydrogels for controlled release of maleic acid to improve the solubility of phosphate fertilizers |
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| Authors: | Mehlika Pulat Nilgün U?urlu |
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| Institution: | 1. Gazi Universitesi Fen Fakültesi, Kimya B?lümü, Teknikokullar, Ankara, Turkeympulat@gazi.edu.tr;3. Ba?kent Universitesi, Teknoloji Geli?tirme Merkezi C06, Etimesgut, Ankara, Turkey |
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| Abstract: | In this study, interpenetrating polymer network (IPN) hydrogel systems including maleic acid (MA) were constituted to improve the solubility of phosphate fertilizers. A series of full and semi-IPN hydrogels were prepared from various gelatin/polyacrylamide mixtures by using two different cross-linkers. The effects of polymer composition on the morphological structures and swelling behaviors of the hydrogels were investigated. The swelling values of all hydrogels were found to be in between 435% and 830%. MA release from load0ed hydrogels was followed and it was determined that MA-loaded hydrogels efficiently decreased pH and improved the solubility of Ca3(PO4)2 in releasing medium. |
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| Keywords: | Controlled release gelatin interpenetrating network hydrogels maleic acid polyacrylamide |
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