| 物理交联聚乙烯醇凝胶中氢键作用研究 |
| |
| 引用本文： | 杨荣杰,乔丽坤,李雪春,何吉宇. 物理交联聚乙烯醇凝胶中氢键作用研究[J]. 北京理工大学学报, 2004, 24(11): 1005-1008 |
| |
| 作者姓名： | 杨荣杰 乔丽坤 李雪春 何吉宇 |
| |
| 作者单位： | 北京理工大学,材料科学与工程学院,北京,100081;铁道部产品质量监督检验中心,北京,100081 |
| |
| 摘 要： | 采用反复冷冻-解冻法制备聚乙烯醇(PVA)凝胶.采用Hakee RS300动态应力流变仪,利用动态力学分析方法研究PVA物理交联凝胶的力学性能及氢键作用.结果表明,PVA水凝胶及PVA/DMSO凝胶的剪切模量,物理交联密度及最大抗张强度均随着PVA浓度的增加而增大;同一浓度下,PVA水凝胶的剪切模量及物理交联密度大于PVA/DMSO凝胶,但氢键活化能小于PVA/DMSO凝胶.
|
| 关 键 词： | 聚乙烯醇 凝胶 氢键 活化能 |
| 文章编号： | 1001-0645(2004)11-1005-04 |
| 收稿时间： | 2003-11-21 |
| 修稿时间： | 2003-11-21 |
Hydrogen Bonding Interactions in Physical Cross-Linking Polyvinyl Alcohol Gels |
| |
| YANG Rong-jie,QIAO Li-kun,LI Xue-chun and HE Ji-yu. Hydrogen Bonding Interactions in Physical Cross-Linking Polyvinyl Alcohol Gels[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2004, 24(11): 1005-1008 |
| |
| Authors: | YANG Rong-jie QIAO Li-kun LI Xue-chun HE Ji-yu |
| |
| Affiliation: | YANG Rong-jie~1,QIAO Li-kun~1,LI Xue-chun~2,HE Ji-yu~1 |
| |
| Abstract: | Physical cross-linking polyvinyl alcohol (PVA) gels were prepared by repetitive freezing and thawing processes. Mechanical properties and hydrogen bonding interactions in the gel were studied by Hakee RS300 rheometer. It was observed that, firstly, the shear modulus, tensile strength and physical cross-linking densities of gels were increased with the increase of concentration of PVA; secondly, at the same concentration, the shear modulus and physical cross-linking densities of PVA hydrogels were higher than that of PVA/DMSO gels, while the activation energies of hydrogen bonding dissociation of PVA hydrogels was lower than that of PVA/DMSO gels. |
| |
| Keywords: | polyvinyl alcohol gel hydrogen bonding activation energy |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
|
点击此处可从《北京理工大学学报》下载全文 |
|
