| Effect of surfactant on porosity and swelling behaviors of guar gum-g-poly (sodium acrylate -co- styrene)/attapulgite superabsorbent hydrogels | |
| Department | 环境材料与生态化学研究发展中心 |
Shi XN(施小宁); Wang WB(王文波) ; Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
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| 2011 | |
| Source Publication | Colloids and Surfaces B: Biointerfaces
 |
| ISSN | 0927-7765 |
| Volume | 88Issue:1Pages:279-286 |
| Abstract | Novel fast-swelling porous guar gum-g-poly(sodium acrylate-co-styrene)/attapulgite (GG-g-P(NaA-co-St)/APT) superabsorbent hydrogels were prepared by simultaneous free-radical graft copolymerization reaction of guar gum (GG), partially neutralized AA (NaA), styrene (St) and attapulgite (APT) using N,N -methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator in aqueous solution and the surfactant self-assembling templating pore-forming technique. Fourier transform infrared (FTIR) spectroscopy confirmed that the surfactant could be removed from the final hydrogel product by methanol/water (8:1, v/v) washing process and the surfactant only act as micelle template to form pores. The effect of surfactant type on the porous microstructure of the hydrogel was assessed by field emission scanning electron microscope (FESEM). It was shown that incorporation of proper amount of anionic surfactant sodium n-dodecyl sulfate (SDS) in the gelling process of the hydrogel can obviously enhance the swelling capacity and initial swelling rate. The salt-sensitivity of the SDS-added hydrogel in distilled water and 15 mmol/L NaCl, CaCl2 solution or 15 mmol/L NaCl and CaCl2 solution was investigated, and it was found that the swelling-deswelling capability is quite reversible. A similar reproducible on-off switching behavior was observed in the 1 mmol/L solution of phosphate buffer at pH 2.1 and 7.4. |
| Keyword | Surfactant Porosity Guar Gum Hydrogel Swelling Behavior |
| Subject Area | 功能高分子 |
| Funding Organization | 国家自然科学基金项目(20877077) |
| 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/362003/87 |
| 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 | Shi XN,Wang WB,Wang AQ,et al. Effect of surfactant on porosity and swelling behaviors of guar gum-g-poly (sodium acrylate -co- styrene)/attapulgite superabsorbent hydrogels[J]. Colloids and Surfaces B: Biointerfaces,2011,88(1):279-286. |
| APA | 施小宁,王文波,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2011).Effect of surfactant on porosity and swelling behaviors of guar gum-g-poly (sodium acrylate -co- styrene)/attapulgite superabsorbent hydrogels.Colloids and Surfaces B: Biointerfaces,88(1),279-286. |
| MLA | 施小宁,et al."Effect of surfactant on porosity and swelling behaviors of guar gum-g-poly (sodium acrylate -co- styrene)/attapulgite superabsorbent hydrogels".Colloids and Surfaces B: Biointerfaces 88.1(2011):279-286. |
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