当前位置: X-MOL 学术J. Membr. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cyclic olefin polymer as a novel membrane material for membrane distillation applications
Journal of Membrane Science ( IF 8.4 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.memsci.2020.118845
M. Sabzekar , M. Pourafshari Chenar , Z. Maghsoud , O. Mostaghisi , M.C. García-Payo , M. Khayet

Abstract A first attempt was made to prepare cyclic olefin polymer/copolymer (COP/COC) flat-sheet porous membranes by the well-known non-solvent induced phase separation method. In this study, two solvents (chloroform and 1,2,4-trichlorobenzene), different additives (polyvinylpyrrolidone, PVP, polyethylene glycol, PEG400, polyethylene oxide, PEO, and Sorbitan monooleate, Span 80) and coagulants (acetone and 70/30 wt% acetone/water mixture) were employed. The prepared membranes were characterized in terms of the thickness (70–85 μm), porosity (∼50–80%), liquid entry pressure (1.16–4.55 bar), water contact angle (∼86° - 111°), mean pore size (158–265 nm), mechanical properties (tensile strength: 0.74–5.51 MPa, elongation at break: 3.34%–7.94% and Young's modulus: 29–237 MPa), morphological and topographical characteristics. Short-term direct contact membrane distillation (DCMD) tests showed maximum permeate fluxes of 20 kg m−2h−1 and 15 kg m−2h−1 when using as feed distilled water and 30 g/L sodium chloride aqueous solution, respectively, with a high salt separation factor (99.99%). Long-term DCMD tests of some selected membranes carried out during 24–50 h showed that the membranes prepared with PEG additive exhibited more stable DCMD performance. In general, it was proved that COP can be successfully used as a novel polymer candidate in membrane distillation (MD) applications.

中文翻译:

环烯烃聚合物作为用于膜蒸馏应用的新型膜材料

摘要 首次尝试通过众所周知的非溶剂诱导相分离方法制备环状烯烃聚合物/共聚物(COP/COC)平板多孔膜。在本研究中,两种溶剂(氯仿和 1,2,4-三氯苯)、不同的添加剂(聚乙烯吡咯烷酮、PVP、聚乙二醇、PEG400、聚环氧乙烷、PEO 和山梨糖醇单油酸酯,Span 80)和混凝剂(丙酮和 70/30重量%丙酮/水混合物)。制备的膜的特征在于厚度(70-85 μm)、孔隙率(~50-80%)、液体进入压力(1.16-4.55 bar)、水接触角(~86° - 111°)、平均孔尺寸(158–265 nm)、机械性能(拉伸强度:0.74–5.51 MPa、断裂伸长率:3.34%–7.94% 和杨氏模量:29–237 MPa)、形态和地形特征。短期直接接触膜蒸馏 (DCMD) 测试表明,当使用蒸馏水和 30 g/L 氯化钠水溶液作为进料时,最大渗透通量分别为 20 kg m-2h-1 和 15 kg m-2h-1。高盐分离系数 (99.99%)。在 24-50 小时内对某些选定膜进行的长期 DCMD 测试表明,用 PEG 添加剂制备的膜表现出更稳定的 DCMD 性能。总的来说,已证明 COP 可以成功地用作膜蒸馏 (MD) 应用中的新型聚合物候选物。在 24-50 小时内对某些选定膜进行的长期 DCMD 测试表明,用 PEG 添加剂制备的膜表现出更稳定的 DCMD 性能。总的来说,已证明 COP 可以成功地用作膜蒸馏 (MD) 应用中的新型聚合物候选物。在 24-50 小时内对某些选定膜进行的长期 DCMD 测试表明,用 PEG 添加剂制备的膜表现出更稳定的 DCMD 性能。总的来说,已证明 COP 可以成功地用作膜蒸馏 (MD) 应用中的新型聚合物候选物。
更新日期:2021-03-01
down
wechat
bug