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Studies on radiation grafting of hydrophilic monomer onto chitin for ion exchange application were examined . Over the past several years , chitin has been receiving increased attention for its application such as ion exchange . They are utilized scarcely because of problems associated with poor solubility, hidrophilicity and low reactivity. Graft copolymerization induced by irradiation is one of the methods for chitin modification in order to improve its properties such as hydrophilicity and reactivity. The aim of this research is to increasing the ability of chitin as ion exchange for heavy metal adsorbent.