| 致孔剂对PVDF-g-PNIPAAm温度敏感膜成膜过程及膜性能的影响 |
| |
| 引用本文： | 冯霞,郭艳芬,赵义平,李建新,陈熙,陈莉. 致孔剂对PVDF-g-PNIPAAm温度敏感膜成膜过程及膜性能的影响[J]. 高分子材料科学与工程, 2012, 0(10): 26-29 |
| |
| 作者姓名： | 冯霞 郭艳芬 赵义平 李建新 陈熙 陈莉 |
| |
| 作者单位： | 天津工业大学材料科学与工程学院中空纤维膜材料与膜过程省部共建国家重点实验室培育基地 |
| |
| 基金项目： | 国家自然科学基金资助项目(21174103,21074091,51003076);教育部科学技术研究重点项目(209005);天津市应用基础研究项目(10JCZDJC22000)资助 |
| |
| 摘 要： | 采用热力学相图和超声时域反射法研究了致孔剂聚乙二醇(PEG)对聚偏氟乙烯-g-聚N-异丙基丙烯酰胺(PVDF-g-PNIPAAm)成膜过程的影响。结果表明,在PVDF-g-PNIPAAm/DMF/H2O成膜体系中添加PEG后,促进了成膜体系的分相,体系变得更不稳定。加入PEG后,使得PVDF-g-PNIPAAm/DMF/H2O成膜体系的成膜速度加快,体系更容易发生瞬时液液分相,导致膜孔尺寸增加,纯水通量提高,但温度响应性能不明显。
|
| 关 键 词： | 聚偏氟乙烯-g-聚N-异丙基丙烯酰胺 成膜热力学 成膜动力学 超声时域反射 致孔剂 |
Influence of Pore-Forming Agent on the Membrane Formation Process and Properties of PVDF-g-PNIPAAm Temperature-Sensitive Membrane |
| |
| Xia Feng,Yanfen Guo,Yiping Zhao,Jianxin Li,Xi Chen,Li Chen. Influence of Pore-Forming Agent on the Membrane Formation Process and Properties of PVDF-g-PNIPAAm Temperature-Sensitive Membrane[J]. Polymer Materials Science & Engineering, 2012, 0(10): 26-29 |
| |
| Authors: | Xia Feng Yanfen Guo Yiping Zhao Jianxin Li Xi Chen Li Chen |
| |
| Affiliation: | (School of Material Science & Engineering,State Key Laboratory of Hollow Fiber Membrane Materials and Processes,Tianjin Polytechnic University,Tianjin 300160,China) |
| |
| Abstract: | The influence of pore-forming agent polyethylene glycol(PEG) on poly(vinylidene fluoride) grafting poly(N-isopropylacrylamide)(PVDF-g-PNIPAAm)temperature-sensitive membrane formation mechanism was studied by the phase diagram(thermodynamics)and ultrasonic time-domain reflectometry(kinetics)(UTDR).The results show that the addition of PEG to the casting solution promotes the phase separation process and decreases the thermodynamical stability of the PVDF-g-PNIPAAm/ N,N-dimethylformamide(DMF)/H2O system.The addition of PEG to the casting solution increases the membrane-forming speed and promotes the occurrence of instantaneous phase separation.Adding PEG to the casting solution increases the membrane pore size and water flux,but decreases the temperature-sensitivity. |
| |
| Keywords: | PVDF-g-PNIPAAm membrane formation thermodynamics membrane formation kinetic ultrasonic time-domain reflectometry pore-forming agent |
| 本文献已被 CNKI 等数据库收录！ |
|
