Preparation, swelling and water-retention properties of crosslinked superabsorbent hydrogels based on guar gum
文献类型：期刊论文
| 作者 | Wang WB(王文波) ; Wang AQ(王爱勤)
|
| 刊名 | Advanced Materials Research
 |
| 出版日期 | 2010 |
| 卷号 | 96页码:177-182 |
| 关键词 | Superabsorbent hydrogel Guar gum Sodium acrylate Water absorption Water retention |
| ISSN号 | 1022-6680 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | Utilization of natural polymer as matrix for preparing hydrogels can improve the performance of the materials and render them environmentally friendly. In this work, the guar gum-g-poly(sodium acrylate) (GG-g-PNaA) superabsorbent hydrogels were prepared by the solution graft copolymerization of natural guar gum (GG) with partially neutralized acrylic acid (NaA) using ammonium persulfate (APS) as initiator and [1],[1]′-methylenebisacrylamide (MBA) as crosslinker. FTIR spectra confirmed that NaA had been grafted on GG chains. The effects of reaction variables including the concentration of APS and MBA, the weight ratio of acrylic acid (AA) to GG and the neutralization degree of AA on water absorption were investigated. The superabsorbent hydrogel prepared under optimal condition gives the best absorption of 1107 g·g–1 in distilled water and 88 g·g–1 in 0.9 wt% NaCl solution. Effects of external pH on the swelling properties of hydrogels were investigated, and the practical water retention properties of the hydrogels were also evaluated. Results indicated that the hydrogels exhibited excellent pH-stability in a wide pH range from 4 to 11, and the water-retention capabilities of sand soils were also greatly improved after utilizing the superabsorbent hydrogels. This superabsorbent hydrogels could be used as potential eco-friendly water-saving materials for agricultural or ecological application. |
| 学科主题 | 功能高分子 |
| 收录类别 | EI |
| 资助信息 | 中科院西部行动项目(KGCX2-YW-501) |
| 语种 | 英语 |
| 公开日期 | 2012-09-02 |
| 源URL | [http://210.77.64.217/handle/362003/138]  |
| 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. Preparation, swelling and water-retention properties of crosslinked superabsorbent hydrogels based on guar gum[J]. Advanced Materials Research,2010,96:177-182. |
| APA | 王文波,&王爱勤.(2010).Preparation, swelling and water-retention properties of crosslinked superabsorbent hydrogels based on guar gum.Advanced Materials Research,96,177-182. |
| MLA | 王文波,et al."Preparation, swelling and water-retention properties of crosslinked superabsorbent hydrogels based on guar gum".Advanced Materials Research 96(2010):177-182. |
入库方式： OAI收割
来源：兰州化学物理研究所
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