| Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays | |
| Department | 环境材料与生态化学研究发展中心 |
Zhang JP(张俊平) ; Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
| |
| 2007 | |
| Source Publication | Reactive and Functional Polymers
 |
| ISSN | 1381-5148 |
| Volume | 67Issue:8Pages:737-745 |
| Abstract | A series of clay-basedsuperabsorbentcomposite from acrylamide (AM) and various clays, such as attapulgite, kaolinite, mica, vermiculate and Na+-montmorillonite, was prepared by free-radical aqueous polymerization, using N,N′-methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator, and then saponified with sodium hydroxide solution. In this paper, the reaction mechanism and thermal stability of the superabsorbentcomposites incorporated with various clays were characterized by FTIR, XRD and TGA, respectively. The effects of clay kind and clay content on equilibrium water absorbency of these composites were also investigated and compared. In addition, the influences of clay kind on comprehensive swellingbehaviors of the PAM/claysuperabsorbentcomposites were studied. The results indicated that the introduced clays could influence physicochemical properties of obtained superabsorbentcomposites. Mica could improve thermal stability of corresponding superabsorbentcomposites to the highest degree comparing with the other clays. The PAM/claysuperabsorbentcomposites incorporated with 10 wt% clay of various kinds were all endowed with equilibrium water absorbency of more than 1300 g g?1. The equilibrium water absorbency decreases with increasing clay content and correlates with the kind of clay. Attapulgite-basedsuperabsorbentcomposite was endowed with higher water absorbency in univalent cationic saline solution, however, the vermiculite- and the kaolinite-based ones acquired the highest water absorbency in CaCl2 and FeCl3 aqueous solution, respectively. Moreover, the superabsorbentcomposites incorporated with Na+-montmorillonite have higher swelling rate and that of doped with mica was endowed with higher reswelling capability. |
| Keyword | Superabsorbentcomposite Clay Kind Water Absorbency |
| Subject Area | 功能高分子 |
| Funding Organization | 科技部863重大专项子课题(2005AA2Z4030) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/210 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | 王爱勤 aqwang@licp.cas.cn |
| Recommended Citation GB/T 7714 | Zhang JP,Wang AQ,王爱勤 aqwang@licp.cas.cn. Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays[J]. Reactive and Functional Polymers,2007,67(8):737-745. |
| APA | 张俊平,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2007).Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays.Reactive and Functional Polymers,67(8),737-745. |
| MLA | 张俊平,et al."Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays".Reactive and Functional Polymers 67.8(2007):737-745. |
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