| Preparation and swelling characteristics of a superabsorbent nanocomposite based on natural guar gum and cation-modified vermiculite | |
| Department | 环境材料与生态化学研究发展中心 |
Wang WB(王文波) ; Zhai NH(翟乃华); Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
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| 2011 | |
| Source Publication | Journal of Applied Polymer Science
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| ISSN | 0021-8995 |
| Volume | 119Issue:6Pages:3675-3686 |
| Abstract | A series of novel superabsorbent nanocomposites were prepared by the solution radical polymerization of natural guar gum (GG), partially neutralized acrylic acid [sodium acrylate (NaA)], and cationexchanged vermiculite (Mn+-VMT) with ammonium persulfate as the initiator in the presence of the crosslinking agent N,N'-methylene-bis-acrylamide. Fourier transform infrared analysis revealed that NaA was grafted onto the GG chains and that Mn+-VMT participated in the polymerization. X-ray diffraction results showed that the occurrence of the cation-exchange process changed the interlayer gap of vermiculite (VMT) and that M Mn+ –VMT was exfoliated during polymerization to form a nanocomposite. The exfoliated VMT led to better dispersion in the GG-g-poly(sodium acrylate) matrix, as shown by scanning electron microscopy and transmission electron microscopy analysis. Mn+-VMT improved the water absorption of the nanocomposite more remarkably than raw VMT, and Al3+ -VMT enhanced the water absorption to the highest degree. The nanocomposite exhibited intriguing overshooting swelling characteristics in a multivalent saline solution and acidic pH solution and showed switching pH-responsive behaviors in buffer solutions between pH 2 and pH 7.2. |
| Keyword | Guar Gum Vermiculite Superabsorbent Nanocomposite Ph-sensitive Swelling |
| Subject Area | 功能高分子 |
| Funding Organization | 科技部863项目(2006AA03Z0454,2006AA100215) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/70 |
| 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 | Wang WB,Zhai NH,Wang AQ,et al. Preparation and swelling characteristics of a superabsorbent nanocomposite based on natural guar gum and cation-modified vermiculite[J]. Journal of Applied Polymer Science,2011,119(6):3675-3686. |
| APA | 王文波,翟乃华,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2011).Preparation and swelling characteristics of a superabsorbent nanocomposite based on natural guar gum and cation-modified vermiculite.Journal of Applied Polymer Science,119(6),3675-3686. |
| MLA | 王文波,et al."Preparation and swelling characteristics of a superabsorbent nanocomposite based on natural guar gum and cation-modified vermiculite".Journal of Applied Polymer Science 119.6(2011):3675-3686. |
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| 2011119636753686.pdf（2260KB） | 开放获取 | License | View Application Full Text | |||
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