| Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone | |
| 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 | Carbohydrate Polymers
 |
| ISSN | 0144-8617 |
| Volume | 80Issue:4Pages:1028-1036 |
| Abstract | A pH-sensitive semi-interpenetrating polymer network (semi-IPN) superabsorbent hydrogel composed of sodium alginate-g-poly(sodium acrylate) (NaAlg-g-PNaA) network and linear polyvinylpyrrolidone (PVP) was prepared by free-radical solution polymerization in the presence of initiator ammonium persulfate (APS) and crosslinker N,N-methylene-bis-acrylamide (MBA). FTIR results revealed that PNaA had been grafted onto NaAlg macromolecular chains and PVP was penetrated throughout the NaAlg-g-PNaA network by a hydrogen binding action. The surface morphologies of the hydrogels were improved due to the incorporation of PVP as shown by SEM observation. The introduction of PVP and the formation of semi-IPN structure greatly improved the water absorption and swelling rate of the hydrogel. The hydrogel possesses remarkable sensitivity to external pH stimulus and shows reversible On–Off switching swelling characteristic. An intriguing time-dependent swelling behavior of the semi-IPN hydrogel was observed in multi-valence saline and cationic surfactant solutions, but the similar time-dependent behaviors are resulting from two distinct mechanisms. |
| Keyword | Superabsorbent Hydrogel Polyvinylpyrrolidone Sodium Alginate Semi-interpenetrating Polymer Network Swelling |
| 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/111 |
| 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. Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone[J]. Carbohydrate Polymers,2010,80(4):1028-1036. |
| APA | 王文波,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2010).Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone.Carbohydrate Polymers,80(4),1028-1036. |
| MLA | 王文波,et al."Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone".Carbohydrate Polymers 80.4(2010):1028-1036. |
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| 201080410281036.pdf（927KB） | 开放获取 | License | View Application Full Text | |||
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