Study on superabsorbent composite. VIII. Effects of acid- and heat-activated attapulgite on water absorbency of polyacrylamide/attapulgite
文献类型：期刊论文
| 作者 | Zhang JP(张俊平) ; Wang AQ(王爱勤)
|
| 刊名 | Journal of Applied Polymer Science
 |
| 出版日期 | 2007 |
| 卷号 | 103期号:4页码:2419-2424 |
| 关键词 | attapulgite polyacrylamide superabsorbent composites water absorbency |
| ISSN号 | 0021-8995 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | A novel superabsorbent composite, polyacrylamide/attapulgite, from acrylamide (AM) and attapulgite (APT), was prepared by free-radical polymerization, using N,N′-methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator. The effects of hydrochloric acid (HCl) concentration, acidification time, and acidification temperature while acidifying APT and temperature and APT heat-activation on water absorbency of the superabsorbent composite in distilled water and in 0.9 wt % NaCl solution were studied. The water absorbency first decreases with increasing the HCl concentration while acidifying APT, and then increases with further increasing the HCl concentration. Prolongation of acidification time is of benefit to the increase of water absorbency. At a given HCl concentration, water absorbency for the composite increases with increasing acidification temperature. An important increase in water absorbency was observed after incorporating heat-activated APT into the polymeric network, reaching a maximum of 1964 g g−1 with the APT heat-activated at 400°C. Acid- and heat-activation can influence chemical composition, crystalline structure, cation exchange capacity (CEC), and specific surface area of APT according XRF, XRD, FTIR analysis, and physicochemical properties test, and then on water absorbency of corresponding PAM/APT superabsorbent composite. |
| 学科主题 | 功能高分子 |
| 收录类别 | SCI |
| 资助信息 | 科技部863项目(2006AA03Z0454) |
| 语种 | 英语 |
| WOS记录号 | WOS:000243013900045 |
| 公开日期 | 2012-09-02 |
| 源URL | [http://210.77.64.217/handle/362003/194]  |
| 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 | Zhang JP,Wang AQ. Study on superabsorbent composite. VIII. Effects of acid- and heat-activated attapulgite on water absorbency of polyacrylamide/attapulgite[J]. Journal of Applied Polymer Science,2007,103(4):2419-2424. |
| APA | 张俊平,&王爱勤.(2007).Study on superabsorbent composite. VIII. Effects of acid- and heat-activated attapulgite on water absorbency of polyacrylamide/attapulgite.Journal of Applied Polymer Science,103(4),2419-2424. |
| MLA | 张俊平,et al."Study on superabsorbent composite. VIII. Effects of acid- and heat-activated attapulgite on water absorbency of polyacrylamide/attapulgite".Journal of Applied Polymer Science 103.4(2007):2419-2424. |
入库方式： OAI收割
来源：兰州化学物理研究所
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