A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/ medical stone superabsorbent composite with enhanced swelling and responsive properties
文献类型：期刊论文
| 作者 | Wang AQ(王爱勤) ; Wang WB(王文波)
|
| 刊名 | Express Polymer Letters
 |
| 出版日期 | 2011 |
| 卷号 | 5期号:5页码:385-400 |
| 关键词 | polymer composites carboxymethylcellulose medical stone superabsorbent smart-responsive swelling |
| ISSN号 | 1788-618x |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | Free-radical graft copolymerization among sodium carboxymethylcellulose (CMC), partially neutralized acrylic acid (NaA), medical stone (MS) and crosslinker N,N!-methylene-bis-acrylamide (MBA) was performed to prepare new carboxymethylcellulose-g-poly(sodium acrylate)/medical stone (CMC-g-PNaA/MS) superabsorbent composites. Fourier transform infrared (FTIR) spectra, thermogravimetry- differential scanning calorimetry (TG-DSC) and field emission scanning electromicrsocopic (FESEM) analysis confirmed that NaA had been grafted onto CMC backbone and MS participated in polymerization, and the thermal stability and surface morphologies were improved by the addition of MS. Energy dispersive spectrometer (EDS) and elemental map (EM) analyses revealed the better distribution of MS in the CMC-g-PNaA matrix. The incorporation of 20 wt% MS clearly enhanced the water absorption by 100% (from 317 to 634 g/g). The developed composites showed enhanced swelling rate and On-Off switching swelling characteristics in various pH solutions, saline solutions and hydrophilic organic solvents, which represented interesting and reversible pH-, saline- and hydrophilic organic solvent-responsive characteristics. In addition, the composite exhibited intriguing time-dependent kinetic swelling properties in various heavy metal solutions. |
| 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/362003/73]  |
| 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 AQ,Wang WB. A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/ medical stone superabsorbent composite with enhanced swelling and responsive properties[J]. Express Polymer Letters,2011,5(5):385-400. |
| APA | 王爱勤,&王文波.(2011).A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/ medical stone superabsorbent composite with enhanced swelling and responsive properties.Express Polymer Letters,5(5),385-400. |
| MLA | 王爱勤,et al."A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/ medical stone superabsorbent composite with enhanced swelling and responsive properties".Express Polymer Letters 5.5(2011):385-400. |
入库方式： OAI收割
来源：兰州化学物理研究所
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