CHEMICAL MODIFICATION OF THE SURFACE OF CALCIUM ALGINATE GEL BEADS

被引：0
|
作者：
萧聪明
机构：
[1] China
[2] College of Materials Science and Engineering
[3] Huaqiao University
[4] Quanzhou 362011
来源：
Chinese Journal of Polymer Science | 2004年 / 02期
关键词：
Calcium alginate gel bead; Vinyl acetate; Graft copolymerization; Chemical modification;
D O I：
暂无
中图分类号：
TQ316.6 [改性处理];
学科分类号：
0805 ; 080502 ;
摘要：
The chemical modification of the surface of calcium alginate gel beads (CAGB) via grafting copolymerization with vinyl acetate (VAc) was studied. The optimum reaction conditions with activation and graft copolymerization two steps were explored. First, 5 grams CAGB with 2.5 mm initial diameter was initiated with 0.0493 mol/L K2S2O8 at 51 °C for 30 min in 15 mL 1 % PVA/H2O. Then 4.34 moi/L VAc was added dropwise and the reaction was allowed to proce at 48 °C for 3 h. The grafting efficiency could come up to 30%. It was found the stability of modified CAGB in the air and in electrolyte solutions was greatly improved.
引用
收藏
页码：183 / 186
页数：4
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