| 脱硫用PVDF膜的结构调控与性能研究 |
| 作者：李涵1，2，叶卉1，2，王艳兵1，2，张玉忠1，2，李泓1，2，陈颖3 |
| 单位： 1.天津工业大学 材料科学与工程学院，天津 300387； |
| 关键词： PVDF；Zonyl 8740；膜接触器；脱硫 |
| 出版年,卷(期):页码： 2015,35(1):35-41 |
|
摘要： |
| 本文以PVDF为膜材料，DMAc为溶剂，采用浸没沉淀相转化法制膜，研究了亲/疏水性的添加剂对PVDF膜结构、接触角及气通量的影响；采用含氟表面活性剂Zonyl 8740对PVDF膜进行疏水改性，通过ATR-FTIR、FE-SEM、接触角等对膜表征，并进行脱硫性能评价。结果表明，疏水性添加剂使PVDF膜表面水接触角提高，添加剂种类对膜气通量有明显影响，在20℃、0.01 MPa实验条件下，PVDF膜最大气通量为85.6 m3/m2·h，Zonyl 8740涂覆改性后PVDF膜表面疏水性提高，水接触角可达到133.5°，二氧化硫脱除率可达到81.3%。 |
| The polyvinylidene fluoride (PVDF) membranes have been prepared by phase inversion method with dimethylacetamide (DMAc) as solvent. The effects of hydrophilic/hydrophobic additives on the membrane structure, contact angle and gas permeability were investigated. By coating fluorine-containing surfactant Zonyl 8740, the PVDF membranes were modified to obtain hydrophobic surface. ATR-FTIR, FE-SEM and contact angle on membranes were characterized, and the corresponding desulfurization performance was evaluated. The results showed that the additive improved the water contact angle and hydrophobic performance of the membrane. The additive type had obvious influence on the gas permeability of membranes, and the max ventilation property of PVDF membrane come to 85.6 m3/m2·h under 20℃ and 0.01 MPa conditions. Through Zonyl 8740 modification, the PVDF membranes showed excellent hydrophobicity, and the water contact angle was 133.5 ° with 81.3% of sulfur dioxide removal efficiency. |
| 李涵（1988-），女，天津人，在读硕士，师承张玉忠教授，从事膜材料研究。 |
|
参考文献： |
| [1] 王晓茜，韩双.我国脱硫脱硝市场及其发展趋势[C].中国环境科学学会学术年会论文集，2013，1256-1260. [2] 王海波，钟宏等.烟气脱硫技术研究进展[J].应用化工，2013，42(10)：1899-1902. [3] Cooney D O, Jackson C C. Gas absorption in a hollow fiber device[J]. Chemical Engineering Communications, 1989, 79:153-156. [4] 恩瑞克·德利奥里.膜接触器原理应用及发展前景[M].北京：化学工业出版社，2009：13 [5] 金美芳，曹义鸣.膜吸收法脱除二氧化硫[J].膜科学与技术，1999，19（3）：44-47. [6] Xueyan Sun, Fangang Meng, Fenglin Yang. Application of seawater to enhance SO2 removal from simulated flue gas through hollow fiber membrane contactor[J]. Journal of Membrane Science, 2008, 312:6-14. [7] 王玲.气/液膜接触器分离过程及其膜材料学研究[J].轻工科技，2013，4：47-48. [8] 贠延滨，刘丽英，马润宇.聚偏氟乙烯膜的研究进展[J].膜科学与技术，2003， 23(2)：57-61. [9] M. R. Moghareh, Andrew M. Groth b. Ultrafiltration PVDF hollow fibre membranes with interconnected bicontinuous structures produced via a single-step phase inversion technique[J]. Journal of Membrane Science, 2012, 23:23-34. [10] 冯春燕，孔瑛，蒋官澄等.凝析油气藏气湿反转解水锁的实验研究[J].钻井液与完井液，2011，28(5)：1-4. [11] Hyun Hee Park, Bal Raj Deshwal, In Won Kim. Absorption of SO2 from ?ue gas using PVDF hollow fiber membranes[J]. Journal of Membrane Science, 2008 , 319:29-37. [12] Jiang L, Wang R, Yang B, et al. Binary cooperative complementary nanoscaleinterfacial materials[J]. Pure and Applied Chemistry, 2000, 72(1/2):73-81. [13] Cassie A B D, Baxter S. Wettability of porous surfaces[J]. Trans Faraday Soc, 1944, 40:546-55. |
|
服务与反馈： |
| 【文章下载】【加入收藏】 |
《膜科学与技术》编辑部 地址：北京市朝阳区北三环东路19号蓝星大厦 邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com
京公网安备11011302000819号