摘要
The calcium alginate gel beads（CAGB） are modified via graft copolymerization with acrylonitrile（AN）. It is found that the grafting yield achieved 799% when 5.0 g CAGB（in diameter of 3.2 mm） is mixed with 0.033 9 mol/L K2S2O8 for 35 min at 51 ℃ and copolymerized with 2.85 mol/L AN for 4 h. The structure of CAGB-g-PAN is verified with FTIR. The compactness of CAGB and modified CAGB is investigated with fluorometry. It is found that the compactness of the gel beads is increased with the grafting yield. Modified CAGBs keep their integrity in the electrolyte solutions that are capable of decomposition of CAGB, indicating the stability of CAGB is greatly enhanced.
The calcium alginate gel beads(CAGB) are modified via graft copolymerization with acrylonitrile(AN). It is found that the grafting yield achieved 799% when 5.0 g CAGB(in diameter of 3.2 mm) is mixed with 0.033 9 mol/L K_2S_2O_8 for 35 min at 51 ℃ and copolymerized with 2.85 mol/L AN for 4 h. The structure of CAGB-g-PAN is verified with FTIR. The compactness of CAGB and modified CAGB is investigated with fluorometry. It is found that the compactness of the gel beads is increased with the grafting yield. Modified CAGBs keep their integrity in the electrolyte solutions that are capable of decomposition of CAGB, indicating the stability of CAGB is greatly enhanced.
出处
《应用化学》
CAS
CSCD
北大核心
2004年第5期535-537,共3页
Chinese Journal of Applied Chemistry
基金
福建省青年科技人才创新项目 (2 0 0 2J0 2 1)
华侨大学科研基金项目资助
关键词
海藻酸钙水凝胶
丙烯腈
接枝共聚
calcium alginate gel,acrylonitrile,graft copolymerization
