A pH-sensitive composite hydrogel based on sodium alginate and medical stone: Synthesis, swelling and heavy metal ions adsorption properties
文献类型：期刊论文
| 作者 | Wang WB(王文波) ; Wang AQ(王爱勤)
|
| 刊名 | Macromolecular Research
 |
| 出版日期 | 2011 |
| 卷号 | 19期号:7页码:739-748 |
| 关键词 | composite hydrogel sodium alginate medical stone swelling adsorption pH-sensitivity |
| ISSN号 | 1598-5032 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | 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. |
| 学科主题 | 功能高分子 |
| 收录类别 | SCI |
| 资助信息 | 国家自然科学基金项目(20877077) |
| 语种 | 英语 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://210.77.64.217/handle/362003/76]  |
| 专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
| 推荐引用方式 GB/T 7714 | Wang WB,Wang AQ. 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 | 王文波,&王爱勤.(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 | 王文波,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. |
入库方式： OAI收割
来源：兰州化学物理研究所
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