In this paper,the regularities of graft copolymerization of n butyl methacrylate onto starch by using chromic acid as an initiator were repoted.Many effects on the grafting percentage and the grafting efficiency perce...In this paper,the regularities of graft copolymerization of n butyl methacrylate onto starch by using chromic acid as an initiator were repoted.Many effects on the grafting percentage and the grafting efficiency percentage were discussed including the initiator concentration,the monomer concentration the reacting time and temperature.The results show that the grafting percentage was higher,when monomer concentration and initiator concentration were 0.6mol/L and 5×10 -3 mol/L at 30℃ for 2h respectively.展开更多
Calixarene was first synthesized using p-tert-butylphenol.It was grafted to chitosan by chloropropylene oxide to get target compound.The compound was identified by infrared spectroscopy.
文摘In this paper,the regularities of graft copolymerization of n butyl methacrylate onto starch by using chromic acid as an initiator were repoted.Many effects on the grafting percentage and the grafting efficiency percentage were discussed including the initiator concentration,the monomer concentration the reacting time and temperature.The results show that the grafting percentage was higher,when monomer concentration and initiator concentration were 0.6mol/L and 5×10 -3 mol/L at 30℃ for 2h respectively.
文摘Calixarene was first synthesized using p-tert-butylphenol.It was grafted to chitosan by chloropropylene oxide to get target compound.The compound was identified by infrared spectroscopy.