[1]张守海,王榛麟,石婉玲,等.无机添加剂对磺化杂环共聚醚砜复合膜性能的影响[J].中国材料进展,2018,(02):021-25.[doi:10.7502/j.issn.1674-3962.2018.02.02]
　ZHANG Shouhai,WANG Zhenlin,SHI Wanling,et al.Effect of Inorganic Additives on the Performance of Sulfonated Heterocyclic Copoly(ether sulfone)s Composite Membranes[J].MATERIALS CHINA,2018,(02):021-25.[doi:10.7502/j.issn.1674-3962.2018.02.02]
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无机添加剂对磺化杂环共聚醚砜复合膜性能的影响()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2018年第02期
页码:
021-25
栏目:
前沿综述
出版日期:
2018-02-28

文章信息/Info

Title:
Effect of Inorganic Additives on the Performance of Sulfonated Heterocyclic Copoly(ether sulfone)s Composite Membranes
作者:
张守海; 王榛麟; 石婉玲; 刘乾; 蹇锡高
（大连理工大学化工学院，辽宁省高性能树脂工程技术研究中心，辽宁省高分子科学与工程重点实验室，辽宁 大连 116024）
Author(s):
ZHANG Shouhai;  WANG Zhenlin;  SHI Wanling;  LIU Qian;  JIAN Xigao
（Liaoning Key Laboratory of Polymer Science and Engineering, Liaoning High Performance Polymer Engineering Research Center, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China）
关键词:
磺化杂萘联苯聚芳醚砜; 复合膜; 纳滤膜; 添加剂; 性能
Keywords:
Sulfonated copoly(phthalazinone biphenyl ether sulfone);  Composite membrane;  Nanofiltraion membrane;  Additive;  Performance
DOI:
10.7502/j.issn.1674-3962.2018.02.02
文献标志码:
A
摘要:
磺化联苯型杂萘联苯共聚醚砜为涂层材料，分别以氯化锂、氯化钠、氯化钾为无机添加剂配制浸涂稀溶液，在联苯型杂萘联苯共聚醚砜超滤底膜上，采用涂覆方法制备磺化杂萘联苯共聚醚砜复合纳滤膜（SPPBES-LiCl、SPPBES-NaCl和SPPBES-KCl）。考察了无机添加剂对复合膜的分离性能的影响，复合膜对不同无机盐的脱盐率顺序均为Na2SO4＞NaCl＞MgSO4＞MgCl2，表现出荷负电纳滤膜的分离特征,以氯化锂为添加剂所制备SPPBES-LiCl复合纳滤膜的脱盐率最高，而通量最小。考察了耐热性能和耐氧化性能，当操作温度从20 ℃升至95 ℃时，SPPBES-LiCl复合膜的通量由46 L·m-2·h-1增加到130 L·m-2·h-1，而脱除率下降约3%，相比于SPPBES-NaCl和SPPBES-KCl，SPPBES-LiCl复合膜分离性能随操作温度变化最小。在0.2 g·L-1的NaClO溶液中浸泡8 d，SPPBES-LiCl复合膜通量增大2%左右，而SPPBES-NaCl与SPPBES-KCl的通量增幅小于8%；相比于SPPBES-NaCl和SPPBES-KCl膜，SPPBES-LiCl复合膜具有更好的耐氧化稳定性。磺化杂萘联苯共聚醚砜复合纳滤膜表现出了较好的耐酸碱稳定性。
Abstract:
Sulfonated copoly(phthalazinone biphenyl ether sulfone)(SPPBES) coating solution were prepared with SPPBES as material and LiCl, NaCl and KCl as inorganic salt additives. SPPBES composite nanofiltration membranes were prepared with copoly(phthalazinone biphenyl ether sulfone)(PPBES) as ultrafiltration support membranes via dip coating method. The composite nanofiltration membranes prepared with LiCl, NaCl and KCl as inorganic salt additives were named as SPPBES-LiCl, SPPBES-NaCl and SPPBES-KCl, respectively. The effect of inorganic salt additives on the performance of composite nanofiltration membrane was studied. The composite nanofiltration membranes showed the rejection of inorganic salt in the order of Na2SO4>NaCl>MgSO4>MgCl2, which show the characteristic of negatively charged nanofiltration membranes. The flux of composite membrane increased with the increase in the radii of metal ion of inorganic salt additives, while the salt removing rate of composite membrane decreased. SPPBES-LiCl composite membrane showed highest salt removing rate while SPPBES-KCl composite membrane exhibited highest flux among the three membranes. The thermal stability, chemical stability and oxidative stability of composite membranes were investigated in detail. When the operating temperature increased from 20 to 95 ?C, the flux of SPPBES-LiCl membrane increased from 46 to 130 L·m-2·h-1 while the salt removing rate of composite membrane decreased by 3%. Compared to SPPBES-NaCl and SPPBES-KCl membrane, SPPBES-LiCl membrane showed the least change on membrane performance with the increasing temperature. After composite membranes were immersed into 0.2 g·L-1 NaClO solution for 8 days, the flux of SPPBES-LiCl composite membranes increased by 2% while the flux of SPPBES-NaCl membrane and SPPBES-KCl membrane increased about 8%. It was found that SPPBES composite membranes showed good high temperature resistance, excellent chemical stability and oxidation resistance. Besides, SPPBES-LiCl composite nanofiltration membrane showed better oxidative stability than SPPBES-NaCl membrane and SPPBES-KCl membrane. The effects of inorganic salt additive on morphology and hydrophilicity of composite membranes were investigated by SEM and contact angle. Composite membranes showed smooth surface and contact angle ranging from 55.5??to 58.6?, indicating that three kinds of composite membranes showed similar surface morphology and hydrophilicity.
更新日期/Last Update: 2018-01-30