| Preparation, swelling and water-retention properties of crosslinked superabsorbent hydrogels based on guar gum | |
| Department | 环境材料与生态化学研究发展中心 |
Wang WB(王文波) ; Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
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| 2010 | |
| Source Publication | Advanced Materials Research
 |
| ISSN | 1022-6680 |
| Volume | 96Pages:177-182 |
| Abstract | 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. |
| Keyword | Superabsorbent Hydrogel Guar Gum Sodium Acrylate Water Absorption Water Retention |
| Subject Area | 功能高分子 |
| Funding Organization | 中科院西部行动项目(KGCX2-YW-501) |
| Indexed By | EI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/138 |
| 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 | Wang WB,Wang AQ,王爱勤 aqwang@licp.cas.cn. 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,&王爱勤 aqwang@licp.cas.cn.(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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 201096177182.pdf（1246KB） | 开放获取 | License | View Application Full Text | |||
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