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6761058 
Journal Article 
Radiation-induced grafting of acrylic acid onto cellulose and its ammonia adsorption characteristics 
Park, JS; Kwon, OH; Nho, YC; , 
1997 
1 
Polymer - Korea
ISSN: 0379-153X 
POLYMER SOC KOREA 
SEOUL 
718-724 
WOS:A1997YB63300002 
An attempt was made to synthesize an adsorbent by the radiation grafting of acrylic acid (AAc) onto cellulose. The effects of the absorbed dose, the AAc concentration, reaction temperature, reaction time, metallic salt concentration and storage temperature of irradiated sample on the grafting yield were determined. The grafting extent was found to be dependant on storage condition of irradiated cellulose, and the grafting yield at room temperature was found to decrease rapidly with storage time. On the other hand, the grafting yield at storage temperature -130 degrees C remained constant until 20 days. To prevent homopolymerization, FeSO4 . 7H(2)O, FeSO4(NH4)(2)SO4 . 6H(2)O and CuSO4 . 5H(2)O were added to the grafting solution. FeSO4(NH4)(2)SO4 . 6H(2)O was found to be the most effective salt. The adsorption capacity of ammonia gas by AAc-grafted cellulose having 6.79 mmol/g was much higher than that of activated carbon, activated carbon fiber or silica gel. AAc-grafted cellulose ranging from 90 to 130 grafting percent showed effective adsorption properties for ammonia.