Studies of the initiation mechanism of ferric ion–hydrogen peroxide systems in graft copolymerization on cellulose

✍ Scribed by Yoshitaka Ogiwara; Yukie Ogiwara; Hitoshi Kubota

• Publisher: John Wiley and Sons
• Year: 1968
• Tongue: English
• Weight: 386 KB
• Volume: 12
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1968.070121201

✦ Synopsis

The decomposition of hydrogen peroxide by ferric ion adsorbed on cellulose, the lowering of the degree of polymerization of cellulose, and the graft copolymerization in the systems containing methyl methacrylate were studied. As the amount of ferric ion adsorbed on cellulose and the concentration of hydrogen peroxide became higher, the amount of decomposition of hydrogen peroxide and the niimber of scissions of cellulose chains with higher rates at the initial stage of reaction were both observed t<J increase. It was recognized that the graft copolymeriaation was hardly initiated, while such init,ial reactions were proceeding. Assuming that the hydrogen peroxide decomposed with a higher rate was indifferent to the initiation reaction, a certain relationship was found between the amount of ferric ion adsorbed on cellulose and the initiation efficiency of hydrogen peroxide in graft copolymerization.