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Citation: XIAO Cong-Ming, HE Yue-Ying, WU Hong. Modification of Calcium Alginate Gel Beads via Graft Copolymerization with Acrylonitrile[J]. Chinese Journal of Applied Chemistry, ;2004, 21(5): 535-537. shu

Modification of Calcium Alginate Gel Beads via Graft Copolymerization with Acrylonitrile

1.
College of Materials Science and Engineering, Huaqiao University, Quanzhou 362011

Corresponding author: XIAO Cong-Ming,
Received Date: 11 July 2003
Available Online: 30 September 2003
Fund Project: 福建省青年科技人才创新项目(2002J021) (2002J021)

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.
- calcium alginate gel,
- acrylonitrile,
- graft copolymerization
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