| Ag/PAMAM树形分子纳米复合材料对PTFE膜性能的影响 |
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| 引用本文： | 李国平,张晨晖,刘亚中,柴春鹏,罗运军.Ag/PAMAM树形分子纳米复合材料对PTFE膜性能的影响[J].当代化工,2018(1):41-44,48. |
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| 作者姓名： | 李国平 张晨晖 刘亚中 柴春鹏 罗运军 |
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| 作者单位： | 北京理工大学材料学院,北京,100081 |
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| 摘 要： | 以第4.0代端氨基聚酰胺-胺型树形分子(G4.0-NH2PAMAM)为模板制备Ag/PAMAM纳米复合材料(Ag·DENPs), 利用了Ag·DENPs与聚四氟乙烯(PTFE)膜表面的氢键作用,通过超声沉积的方法制备出了PTFE-Ag/PAMAM复合膜.通过研究沉积时间对Ag·DENPs在PTFE膜表面沉积量的影响,得到饱和沉积时间是60min,沉积量约为2.32mg.通过UV-vis光谱和SEM对其化学组成和微观形貌进行了表征.复合膜的水接触角为105.3°,较纯PTFE膜降低了23.6°,显著改善PTFE膜表面亲水性.复合膜对水和牛血清白蛋白的通量比纯PTFE膜低,但傅立叶变换衰减全反射红外光谱(FRR)为88.2%,比纯PTFE膜的35.4%高出了52.8%,且对大肠杆菌及金黄色葡萄球菌具有抑菌作用.表明Ag·DENPs的引入可以改善PTFE的抗污染性及抑菌性.
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| 关 键 词： | PTFE膜 PAMAM树形分子 抗污染性 抑菌性 PAMAM dendrimer PTFE membrane antipollution bacteriostasis |
Effect of Ag/PAMAM Nanocomposite on the Properties of PTFE Membrane |
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| LI Guo-ping,ZHANG Chen-hui,LIU Ya-zhong,CHAI Chun-peng,LUO Yun-jun.Effect of Ag/PAMAM Nanocomposite on the Properties of PTFE Membrane[J].Contemporary Chemical Industry,2018(1):41-44,48. |
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| Authors: | LI Guo-ping ZHANG Chen-hui LIU Ya-zhong CHAI Chun-peng LUO Yun-jun |
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| Abstract: | Silver-PAMAM dendrimer nanocompoisite (Ag·DENPs) was used to modify the PTFE membrane by ultrasonic deposition method. Chemical composition and micro-morphology of modified PTFE membrane were characterized by UV-vis spectroscopy and SEM. The results showed that Ag·DENPs increased the surface roughness and decreased the pore size of PTFE membranes, and made a significant improvement in PTFE membranes surface hydrophilicity. Flux recovery ratio (FRR) increased about 52.8% in the presence of Ag·DENPs on the PTFE membranes surface, which elucidated the anti-organic fouling performance of PTFE membranes was elevated. Simultaneously, anti-bacterial test confirmed that PTFE-Ag/PAMAM membranes showed superior anti-biofouling activity. |
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