| A pH-sensitive composite hydrogel based on sodium alginate and medical stone: Synthesis, swelling and heavy metal ions adsorption properties | |
| Department | 环境材料与生态化学研究发展中心 |
Gao TP(高天鹏); Wang WB(王文波) ; Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
| |
| 2011 | |
| Source Publication | Macromolecular Research
 |
| ISSN | 1598-5032 |
| Volume | 19Issue:7Pages:739-748 |
| Abstract | New pH-sensitive composite hydrogels were synthesized by free-radical graft copolymerization among sodium alginate (NaAlg), sodium acrylate (NaA), and medical stone (MS). Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), tronsmission electron microscopy (TEM), and thermogravimetric analysis (TGA) analyses confirmed that NaA was grafted onto the NaAlg chains and MS participate in polymerization by its active silanol groups, and the surface morphologies and thermal stability was clearly improved after incorporating MS. The swelling capacity and rate of the hydrogel were clearly enhanced by introducing MS, and the intriguing deswelling in gelatin solution and "overflowing" behaviors in dimethyl sulfoxide (DMSO) and glycerin solutions were observed. In addition, the composite hydrogels exhibited excellent adsorption capacity on heavy metal ions, which enhanced the adsorption of Ni2+, Cu2+, Zn2+ and Cd2+ ions by 10.4, 8.0, 23.0, and 14.3 fold compared to active carbon (AC), and by 17.3, 16.0, 38.3 and 23.8 fold compared to MS, respectively. The biopolymer-based composite hydrogel can be used as a potential water-saving material and candidate of AC for heavy metal removal. |
| Keyword | Composite Hydrogel Sodium Alginate Medical Stone Swelling Adsorption Ph-sensitivity |
| 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/362003/76 |
| 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 | Gao TP,Wang WB,Wang AQ,et al. A pH-sensitive composite hydrogel based on sodium alginate and medical stone: Synthesis, swelling and heavy metal ions adsorption properties[J]. Macromolecular Research,2011,19(7):739-748. |
| APA | 高天鹏,王文波,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2011).A pH-sensitive composite hydrogel based on sodium alginate and medical stone: Synthesis, swelling and heavy metal ions adsorption properties.Macromolecular Research,19(7),739-748. |
| MLA | 高天鹏,et al."A pH-sensitive composite hydrogel based on sodium alginate and medical stone: Synthesis, swelling and heavy metal ions adsorption properties".Macromolecular Research 19.7(2011):739-748. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2011197739748.pdf（1156KB） | 开放获取 | License | View Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment