Kopolimerisasi Iradiasi Kitosan-Polivinyl Alkohol-Akrilamida sebagai Bahan Pelapis Pupuk
Abstract
Irradiation Copolymerization Of Chitosan- Polyvinyl Alcohol-Acrylamide For Coating Of Fertilizizer. Copolymer was made with fixed amount of chitosan and the volume ofpolyvinyl alcohol (PVA) 10% w/v andacrylamide 3% w/v was varied. The variation of irradiation dose are 5, 10, 15, and 20 kGy . In this study was obtained the best formulation to be used as material for the modification of NPK fertilizers is contain of 5 % of chitosan, 40%of PVA (10% w/v), 55% of acrylamide (3% w/v). Measurement of slow release properties was done by absorption-desorption methodeThe results of FTIR characterization, the formation of pores was shown by the results of SEM characterization. Observation and testing the yield of percent gel fraction, swelling ratio, and percent release of phosphate in the polymerization was obtained respectively 50.2%, 320.5 %, 18.3%. In this study shows that the properties of copolymer is influenced by the composition of the PVA and acrylamide and irradiation dose.
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