| PEG浓度对锂藻土分散液的再凝胶化及屈服行为的影响 |
| |
| 引用本文： | 疏瑞文,孙尉翔,刘新星,童真. PEG浓度对锂藻土分散液的再凝胶化及屈服行为的影响[J]. 高等学校化学学报, 2014, 35(10): 2252-2257 |
| |
| 作者姓名： | 疏瑞文 孙尉翔 刘新星 童真 |
| |
| 作者单位： | 华南理工大学材料科学研究所,发光材料与器件国家重点实验室,广州510640 |
| |
| 基金项目： | the National Natural Science Foundation of China，the National Basic Research Program of China(No.2012CB821504).国家自然科学基金，国家“九七三”计划项目 |
| |
| 摘 要： | ![]()
通过离子电导率和pH考察了锂藻土自身释放的Na+浓度,说明未经透析或离子交换处理的cw=30mg/mL的锂藻土分散液静置老化后形成的软固体是反应置限团簇聚集(RLCA)的胶体凝胶.通过剪切流变方法研究了聚乙二醇(PEG)浓度cp对锂藻土/PEG分散液体系的线性和非线性黏弹性的影响.小幅振荡剪切(SAOS)频率扫描结果表明,随着cp增加,锂藻土发生"RLCA凝胶-黏弹性液体-排空(Depletion)凝胶"转变,可观察到该体系的再凝胶化行为.稳态剪切和大振幅剪切实验结果表明,锂藻土/PEG分散体系的再凝胶化的非线性流变学行为也有体现.
|
| 关 键 词： | 锂藻土 聚乙二醇 再凝胶化 屈服行为 小幅振荡剪切 反应置限团簇聚集 |
Effect of Poly(ethylene glycol) Concentration on the Re-entrant Gelation and Yielding Behavior of Aqueous Hectorite Clay Dispersion |
| |
| SHU Ruiwen,SUN Weixiang,LIU Xinxing,TONG Zhen. Effect of Poly(ethylene glycol) Concentration on the Re-entrant Gelation and Yielding Behavior of Aqueous Hectorite Clay Dispersion[J]. Chemical Research In Chinese Universities, 2014, 35(10): 2252-2257 |
| |
| Authors: | SHU Ruiwen SUN Weixiang LIU Xinxing TONG Zhen |
| |
| Affiliation: | SHU Ruiwen;SUN Weixiang;LIU Xinxing;TONG Zhen;Research Institute of Materials Science and State Key Laboratory of Luminescent Materials and Devices,South China University of Technology; |
| |
| Abstract: | ![]()
|
| |
| Keywords: | Laponite Polyethylene glycol Re-entrant gelation Yielding behavior Small amplitude oscillatory shear Reaction-limited cluster aggregation |
| 本文献已被 CNKI 等数据库收录！ |
