| Effects of modified vermiculite on water absorbency and swelling behavior of chitosan-g-poly (acrylic acid)/vermiculite superabsorbent composite | |
| Department | 环境材料与生态化学研究发展中心 |
Xie YT(谢云涛); Wang AQ(王爱勤) ; 王爱勤 aqwang@licp.cas.cn
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| 2009 | |
| Source Publication | Journal of Composite Materials
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| ISSN | 0021-9983 |
| Volume | 43Issue:21Pages:2401-2417 |
| Abstract | In this study, a series of chitosan-g-poly(acrylic acid)/vermiculite (CTS-g-PAA/VMT) superabsorbent composites containing VMT, acid-activated, ion-exchanged, and organic modified VMT were synthesized by free-radical graft polymerization in aqueous solution, using N,N’-methylenebisacrylamide as a crosslinker and ammonium persulfate as an initiator. The effects of VMT and modified VMT on equilibrium water absorbency, swelling rate, and swelling behavior in various cationic saline solutions (NaCl, CaCl2, and FeCl3) and different pH value solution of superabsorbent composites were systematically investigated. FTIR spectroscopy confirmed that acrylic acid had been grafted onto CTS and the [1]OH groups of VMT participated reaction. The introduction of acid-activated, ion-exchanged, and organic modified VMT into chitosan-g-poly(acrylic acid) polymeric network could improve water absorbency and swelling rate compared with that of VMT. The water-absorbing capacity of superabsorbent composites decrease gradually with the increasing of the concentration of NaCl, CaCl2, and FeCl3 solutions from 0.01 to 10mM. The all prepared samples have similar swelling behavior in different pH value solution and the equilibrium water absorbencies of samples keep roughly constant in the pH range from 4 to 12. |
| Keyword | Chitosan Modified Vermiculite Superabsorbent Composite Swelling. |
| Subject Area | 功能高分子 |
| Funding Organization | 科技部863项目(2006AA03Z0454) |
| 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/362003/151 |
| 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 | Xie YT,Wang AQ,王爱勤 aqwang@licp.cas.cn. Effects of modified vermiculite on water absorbency and swelling behavior of chitosan-g-poly (acrylic acid)/vermiculite superabsorbent composite[J]. Journal of Composite Materials,2009,43(21):2401-2417. |
| APA | 谢云涛,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2009).Effects of modified vermiculite on water absorbency and swelling behavior of chitosan-g-poly (acrylic acid)/vermiculite superabsorbent composite.Journal of Composite Materials,43(21),2401-2417. |
| MLA | 谢云涛,et al."Effects of modified vermiculite on water absorbency and swelling behavior of chitosan-g-poly (acrylic acid)/vermiculite superabsorbent composite".Journal of Composite Materials 43.21(2009):2401-2417. |
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| 2009432124012417.pdf（459KB） | 开放获取 | License | View Application Full Text | |||
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