Kopolimerisasi Iradiasi Kitosan-Polivinyl Alkohol-Akrilamida sebagai Bahan Pelapis Pupuk

Gatot Trimulyadi Rekso

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.


Keywords


chitosan, copolymerization, irradiation, coating, fertilizer

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References


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