| CHEMICAL MODIFICATION OF THE SURFACE OF CALCIUM ALGINATE GEL BEADS |
| |
| 引用本文： | Cong-mingXiao Li-chunZhou. CHEMICAL MODIFICATION OF THE SURFACE OF CALCIUM ALGINATE GEL BEADS[J]. 高分子科学, 2004, 0(2): 183-186 |
| |
| 作者姓名： | Cong-mingXiao Li-chunZhou |
| |
| 作者单位： | CollegeofMaterialsScienceandEngineering,HuaqiaoUniversity,Quanzhou362011,China |
| |
| 基金项目： | 华侨大学校科研和教改项目 |
| |
| 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 K2S208 at 51℃ for 30 min in 15 mL 1% PVA/H2O. Then 4.34 mol/L VAc was added dropwise and the reaction was allowed to proce at 48℃ 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.
|
| 关 键 词： | 藻酸钙凝胶体 乙烯基醋酸盐 接枝共聚 化学修饰 |
| 收稿时间： | 2002-12-18 |
| 修稿时间： | 2003-02-19 |
CHEMICAL MODIFICATION OF THE SURFACE OF CALCIUM ALGINATE GEL BEADS* |
| |
| Cong-ming Xiao,Li-chun Zhou. CHEMICAL MODIFICATION OF THE SURFACE OF CALCIUM ALGINATE GEL BEADS*[J]. Chinese Journal of Polymer Science, 2004, 0(2): 183-186 |
| |
| Authors: | Cong-ming Xiao Li-chun Zhou |
| |
| Affiliation: | College of Materials Science and Engineering, Huaqiao University, Quanzhou 362011, China |
| |
| Abstract: | 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 ℃ for 30 min in 15 mL 1% PVA/H2O. Then 4.34 mol/L VAc was added dropwise and the reaction was allowed to proce at 48 ℃ 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. |
| |
| Keywords: | Calcium alginate gel bead Vinyl acetate Graft copolymerization Chemical modification BEADS ALGINATE CALCIUM SURFACE MODIFICATION stability modified electrolyte solutions improved grafting efficiency come initial diameter optimum reaction conditions activation graft copolymerization vinyl acetate chemical modification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
|
点击此处可从《高分子科学》下载全文 |
