| 瓜尔胶基高吸水性树脂的制备、溶胀行为与保水性能 |
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| 引用本文： | 王文波,王爱勤.瓜尔胶基高吸水性树脂的制备、溶胀行为与保水性能[J].化工学报,2008,59(11):2916-2921. |
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| 作者姓名： | 王文波 王爱勤 |
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| 作者单位： | 中国科学院兰州化学物理研究所;中国科学院研究生院 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，中国科学院"西部之光"人才培养计划 |
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| 摘 要： | 以天然瓜尔胶（GG）和丙烯酸（AA）为原料，过硫酸铵（APS）为引发剂，N,N′-亚甲基双丙烯酰胺（MBA）为交联剂，采用水溶液聚合法制备了瓜尔胶接枝聚丙烯酸（GG-g-PAA）高吸水性树脂。考察了MBA浓度对树脂溶胀动力学和溶胀能力的影响，研究了树脂在不同亲水有机溶剂/水混合溶液、不同阳离子盐（NaCl、CaCl2和FeCl3）和阴离子盐（KNO3、K2SO4和K3PO4）溶液中在各浓度和离子强度下的溶胀行为，测定了高吸水性树脂在室温和高温下的保水性能。结果表明，该树脂对亲水有机溶剂较为敏感，吸水倍率随着亲水有机溶剂浓度的增加迅速减小；在各种盐溶液中的吸水倍率随着离子强度的增加而下降。
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| 关 键 词： | 瓜尔胶 高吸水性树脂 接枝共聚 溶胀 保水 |
| 收稿时间： | 2008-3-17 |
| 修稿时间： | 2008-6-5
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Preparation, swelling behavior and water-retention properties of superabsorbent based on guar gum |
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| WANG Wenbo,WANG Aiqin.Preparation, swelling behavior and water-retention properties of superabsorbent based on guar gum[J].Journal of Chemical Industry and Engineering(China),2008,59(11):2916-2921. |
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| Authors: | WANG Wenbo WANG Aiqin |
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| Abstract: | A novel guar gum-g-poly(acrylic acid) superabsorbent was synthesized by the solution copolymerization between natural guar gum (GG) and acrylic acid (AA) using ammonium persulfate (APS) as an initiator and N, N′-methylenebisacrylamide (MBA) as a crosslinker.The effects of MBA concentration on the swelling kinetics and water absorbency of the superabsorbent were investigated, and the swelling behavior of the superabsorbent in various hydrophilic organic solvent/water mixture solutions, various cationic (NaCl, CaCl2 and FeCl3) and anionic (KNO3, K2SO4 and K3PO4) saline solutions at different ion strengths were investigated, and the water-retention properties of the superabsorbent at room temperature and high temperature were also determined.The results showed that the superabsorbent was sensitive to hydrophilic organic solvent, and its water absorbency sharply decreased with increasing concentration of hydrophilic organic solvents; the water absorbency of the superabsorbent in various saline solutions decreased with the increase of ion strength. |
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| Keywords: | guar gum superabsorbent graft copolymerization swelling water-retention |
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