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Report No.

Radiation-induced grafting of acrylonitrile monomer onto cellulose nonwoven fabric

Saiki, Seiichi; Puspitasari, T.*; Seko, Noriaki

Cellulose has been studied as trunk polymer of radiation-induced grafting as well as synthetic polymers. However, cellulose is easy to be degraded and be brittle by irradiation. In this topic, to lower the dose for radiation-induced grafting on cellulose, radiation-induced grafting with o/w emulsion which has ever succeeded to achieve high degree of grafting on synthetic polymer with lower dose was studied using acrylonitrile monomer as a model of typical vinyl monomer. As a result, degree of grafting in the case of emulsion system increased remarkably compared to organic solvent system. And, from 10% to 20% of acrylonitrile monomer concentration, micelle size and degree of grafting increased with increment of acrylonitrile monomer concentration respectively. It is assumed that larger micelles accelerate grafting reaction. As a whole, the effectiveness of radiation emulsion grafting were elucidated even in the case of cellulose as well as trunk polymer.



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