| COMPOSITION AND MICRO-MORPHOLOGY OF POROUS PVA HYDROGELS AND THEIR POISSON'S RATIO AND MECHANICAL PROPERTIES | |
| Lue Hexiang ; Zheng Yudong ; Meng Haoye ; Xu Manqiong ; Guo Xingmin | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | Poisson's ratio Porous hydrogels Poly(vinyl alcohol) Surfactants FOAM Polymer Science |
| 中文摘要 | In order to obtain the auxetic hydrogels with negative Poisson's ratio, porous poly(vinyl alcohol) (PVA) hydrogels with different contents of PVA and surfactant (alkylphenol ethoxylates : OP) were prepared by methods of surfactants template and repeatedly freezing-thawing process, according to the microstructure and deformation mechanism of auxetic materials. The Poisson's ratio and mechanical properties of porous PVA hydrogels were measured and calculated by digital speckle technique. The microstructure and pore morphology of porous PVA hydrogels were observed by optical and electron microscopy. The interrelation and variation of their parameters, including composition, Poisson's ratio, compression modulus, volume modulus of pure and porous PVA hydrogels were compared and investigated. With the increasing of PVA and OP contents, the pore's size became larger, and the Poisson's ratio of porous PVA hydrogels decreased. The values of Poisson's ratio of porous PVA hydrogels were directly proportional to the ratio of the compression modulus and volume modulus of the hydrogels. |
| 语种 | 中文 ; 中文 |
| 出版者 | SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/79006]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Lue Hexiang,Zheng Yudong,Meng Haoye,et al. COMPOSITION AND MICRO-MORPHOLOGY OF POROUS PVA HYDROGELS AND THEIR POISSON'S RATIO AND MECHANICAL PROPERTIES[J],2010, 2010. |
| APA | Lue Hexiang,Zheng Yudong,Meng Haoye,Xu Manqiong,&Guo Xingmin.(2010).COMPOSITION AND MICRO-MORPHOLOGY OF POROUS PVA HYDROGELS AND THEIR POISSON'S RATIO AND MECHANICAL PROPERTIES.. |
| MLA | Lue Hexiang,et al."COMPOSITION AND MICRO-MORPHOLOGY OF POROUS PVA HYDROGELS AND THEIR POISSON'S RATIO AND MECHANICAL PROPERTIES".(2010). |
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