HRP-mediated synthesis of starch-polyacrylamide graft copolymers

摘要

Starch was reacted with acrylamide in water in the presence of horseradish peroxidase(HRP)catalyst/H2O2/2,4 pentanedione to give starch-polyacrylamide graft copolymers.Modified starch-based polymers can be engineered for specific properties by combining starch with synthetic polymers through graft copolymerization(Fanta,1996;Fanta&Doane,1986;Fanta&Bagley,1977;Willett&Finkenstadt,2005).Polyacrylamide grafted starch has been considered for applications in areas such as superabsorbent(Kiatkamjornwong,Mongkolsawat,&Sonsuk,2002;Wu,Lin,Zhou,&Wei,2000)paper-making additives(Heath,Hofreiter,Ernst,Doane,&Hamerstrand,1975;Lu,Lin,&Cao,2003;Yeng,Tahir,Chiang,&Yunus,2004),and textile sizing(Hebeish,EI-Rafie,Higazy,&Ramadan,1996).