Polyarylethersulfone with cardo/poly (vinyl pyrrolidone) blend membrane for pervaporation of methanol/methyl tert-butyl ether mixtures
Polyarylethersulfone with cardo/poly (vinyl pyrrolidone) blend membrane for pervaporation of methanol/methyl tert-butyl ether mixtures
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具有cardo/聚（乙烯基吡咯烷酮）共混膜的聚芳醚砜，用于甲醇/甲基叔丁基醚混合物的全蒸发
DOI：
10.1016/j.memsci.2013.07.060
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发表时间：
2013-12-15
影响因子：
9.5
通讯作者：
Liu, Qing Lin
中科院分区：
文献类型：
--
作者：
Han, Guang Lu;Gong, Yi;Liu, Qing Lin
制备了不同PVP含量的聚芳基亚砜（PES-C）和聚乙烯基吡咯烷酮（PVP）共混膜，用于甲醇(MeOH)/甲基叔丁基醚（MTBE）混合物的渗透蒸发分离。利用傅里叶变换红外（FTIR）、广角x射线衍射（WAXRD）、热重分析（TGA）、扫描电镜（SEM）、接触角测量和正电子湮灭寿命谱（PALS）对膜进行了表征。研究了PVP含量对膨胀性能和力学性能的影响。从溶液-扩散机理的角度探讨了PVP含量对渗透汽化性能的影响。在PVP含量为0 ~ 16 wt%的范围内，随着PVP的掺入，渗透通量增大，分离系数增大。在所有制备的共混膜中，含有84 wt% PES-C和16 wt PVP的膜在40℃下，在15 wt% MeOH饲料混合物中，分离系数最高，为889，渗透通量为344 kg / M-2 h（-1）。
Polyarylabersulform with cardo (PES-C) and poly (vinyl pyrrolidone) (PVP) blend membranes with various PVP contents were prepared for pervaporation separation of methanol (MeOH)/methyl tert-butyl ether (MTBE) mixtures. The membranes were characterized using Fourier transform infrared (FTIR), wide angle X-ray diffraction (WAXRD), thermo gravimetric analysis (TGA), scanning electron microscopy (SEM), contact angle metering and positron annihilation lifetime spectroscopy (PALS). The influence of PVP content On the swelling behavior and mechanical properties was studied. The effect of PVP content on the pervaporation performance was investigated and discussed in terms of the solution-diffusion mechanism. With incorporation of PVP, the permeation flux increased and the separation factor increased as well in the PVP content range of 0-16 wt%. Of all the as-fabricated blend membranes, the one containing 84 wt% PES-C and 16 wt PVP showed the highest separation factor of 889 and a permeation flux of 344 kg pin M-2 h(-1) for a 15 wt% MeOH feed mixture at 40 degrees C. (C) 2013 Elsevier B.V. All rights reserved.