Study on superabsorbent composite. XI. Effect of thermal treatment and acid activation of attapulgite on water absorbency of poly(acrylic acid)/attapulgite superabsorbent composite
文献类型：期刊论文
| 作者 | Wang AQ(王爱勤) ; Zhang JP(张俊平)
|
| 刊名 | Polymer Composites
 |
| 出版日期 | 2007 |
| 卷号 | 28期号:3页码:397-404 |
| ISSN号 | 0272-8397 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | The effect of acid activation and thermal treatment of attapulgite on water absorbency of superabsorbent composite were investigated. Under the same preparation conditions, superabsorbent composite prepared with natural attapulgite exhibited a water absorbency of 639 g/g and it merely kept 71% of its initial water absorbency after 5 times of swelling–deswelling–reswelling test. However, superabsorbent composites prepared with 2–10 M hydrochloric acid acidified attapulgite and 100–400°C thermal treated attapulgite respectively exhibited the water absorbency of 884–1,241 g/g and 701–1,515 g/g. Also, those superabsorbent composites can keep 87% and 85% of their initial water absorbency after 5 times of swelling–deswelling–reswelling test, respectively. These results showed that, compared with superabsorbent composite prepared with natural attapulgite, the comprehensive water-absorbing properties of poly(acrylic acid)/ attapulgite superabsorbent composites were improved effectively by acid activation and thermal treatment of attapulgite. This improvement of water absorbencies and gel strength of superabsorbent composite may be due to synthetical factors such as changes in the crystalline structure and the specific surface area and improvement of the number and the activity of hydroxyl groups of attapulgite, which in turn influence the grafting efficiency of monomer, crosslinking density, and the structure of superabsorbent composite network. |
| 学科主题 | 功能高分子 |
| 资助信息 | 科技部863重大专项子课题(2005AA2Z4030);中国科学院“西部行动”计划项目(KGCXZ-SW-502) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000246932500014 |
| 公开日期 | 2012-09-02 |
| 源URL | [http://210.77.64.217/handle/362003/205]  |
| 专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
| 推荐引用方式 GB/T 7714 | Wang AQ,Zhang JP. Study on superabsorbent composite. XI. Effect of thermal treatment and acid activation of attapulgite on water absorbency of poly(acrylic acid)/attapulgite superabsorbent composite[J]. Polymer Composites,2007,28(3):397-404. |
| APA | 王爱勤,&张俊平.(2007).Study on superabsorbent composite. XI. Effect of thermal treatment and acid activation of attapulgite on water absorbency of poly(acrylic acid)/attapulgite superabsorbent composite.Polymer Composites,28(3),397-404. |
| MLA | 王爱勤,et al."Study on superabsorbent composite. XI. Effect of thermal treatment and acid activation of attapulgite on water absorbency of poly(acrylic acid)/attapulgite superabsorbent composite".Polymer Composites 28.3(2007):397-404. |
入库方式： OAI收割
来源：兰州化学物理研究所
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