膜科学与技术

位置：首页 >> 期刊内容阅读

PSf/SPES共混相容性及其对膜形态结构和性能的影响规律

作者：赵宝宝¹，²，李诗文¹，³，付振刚¹，³，钱晓明²，李建新¹，³

单位： 1. 天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地，天津，300387； 2. 天津工业大学纺织学院，天津，300387；3. 天津工业大学材料科学与工程学院，天津，300387

关键词：聚砜；磺化聚醚砜；相容性；溶液相转化法；超滤膜

DOI号：

分类号： TQ 028.8

出版年,卷(期):页码： 2015,35(5):6-12

摘要：

针对聚砜（PSf）和磺化聚醚砜（SPES）聚合物共混体系相容性，首先通过混合焓法计算预测并用差示扫描量热法（DSC）进行了分析。结果表明二者为部分相容体系，且相容性随共混比的增大呈下降趋势。此外，以N，N-二甲基乙酰胺（DMAc）为溶剂，采用浸没沉淀相转化法制备出PSf/SPES共混平板超滤膜，系统研究了共混相容性对膜形态结构及性能的影响规律。结果表明：当PSf/SPES共混比小于90/10时，聚合物共混具有较好的相容性，所制备共混膜的断面为梯度分布的海绵网络孔结构，且亲水性、表面孔孔径、孔隙率和纯水通量等均随着共混比的增大而增大。其中，当PSf/SPES=92/8时，膜的纯水通量达到1397 L/(m2·h)，对牛血清蛋白（BSA）截留率为85%。随着PSf/SPES共混比进一步增加，共混体系相容性变差，膜的断面出现指状孔结构，BSA截留率显著下降。

The compatiblity of polysulfone (PSf) and sulfonated polyethersulfone (SPES) blend system with different mass ratios was predicted by mixing enthalpy calculation and characterized by differential scanning calorimetry (DSC). The PSF/SPES blend membranes were prepared by non-solvent induced phase separation (NIPS). The effects of blending compatiblity on the structure and performance of PSF/SPES blend membranes were investigated. The results showed that the PSf/SPES blend system with PSf/SPES mass ratio less than 90/10 was a partial compatiblity and the compatiblity decreased with the increase of PSf/SPES mass ratio. Further, the PSF/SPES blend membranes with the mass ratio less than 90/10 obtained exhibited gradient sponge-like asymmetrical structure. The hydrophilcity, surface pore size, porosity and pure water flux of the obtained blend membrane increased with an increase in PSf/SPES mass ratio. When PSf/SPES mass ratio was 92/8, the pure water flux of blend membrane obtained was 1397 L/ (m2·h) and BSA rejection was higher than 85%. The PSf/SPES blend system with PSf/SPES mass ratio more than 90/10 was immiscible. The blend membranes obtained appeared finger-like pores and the rejection for BSA observably decreased.

基金项目：

作者简介：

参考文献：

[1]Ghosh A K, Hoek E M W. Impacts of support membrane structure and chemistry on polyamide–polysulfone interfacial composite membranes[J]. J Membr Sci, 2009. 336(1–2): 140-148.
[2] Sinha M K, Purkait M K. Preparation of fouling resistant PSF flat sheet UF membrane using amphiphilic polyurethane macromolecules[J]. Desalination, 2015. 355: 155-168.
[3] Zhao S, Wang Z, Wang J X, et al. PSf/PANI nanocomposite membrane prepared by in situ blending of PSf and PANI/NMP [J]. J Membr Sci, 2011. 376(1–2): 83-95.
[4] Zhao S, Wang Z, Wei X, et al. Performance improvement of polysulfone ultrafiltration membrane using PANiEB as both pore forming agent and hydrophilic modifier[J]. J Membr Sci, 2011. 385–386: 251-262.
[5] Sun Y N, Xue L X, Zhang Y J, et al. High flux polyamide thin film composite forward osmosis membranes prepared from porous substrates made of polysulfone and polyethersulfone blends[J]. Desalination, 2014. 336: 72-79.
[6] Arthanareeswaran G, Mohan D, Raajenthiren M. Preparation and performance of polysulfone-sulfonated poly(ether ether ketone) blend ultrafiltration membranes. Part I[J]. Appl Surface Sci, 2007. 253(21): 8705-8712.
[7] Ulbricht M, Belfort G. Surface modification of ultrafiltration membranes by low temperature plasma II. Graft polymerization onto polyacrylonitrile and polysulfone[J]. J Membr Sci, 1996. 111(2): 193-215.
[8] Yang Y N, Zhang H X, Wang P, et al. The influence of nano-sized TiO2 fillers on the morphologies and properties of PSF UF membrane[J]. J Membr Sci, 2007. 288(1–2): 231-238.
[9] Zeng M F, Fang Z P, Xu C W, Effect of compatibility on the structure of the microporous membrane prepared by selective dissolution of chitosan/synthetic polymer blend membrane[J]. J Membr Sci, 2004. 230(1–2): 175-181.
[10] Wu M, Wu Z Q, Wang K, et al. Simultaneous the thermodynamics favorable compatibility and morphology to achieve excellent comprehensive mechanics in PLA/OBC blend[J]. Polymer, 2014. 55(24): 6409-6417.
[11] Yoo J E, Kim J H, Kim Y, et al. Novel ultrafiltration membranes prepared from the new miscible blends of polysulfone with poly(1-vinylpyrrolidone-co-styrene) copolymers[J]. J Membr Sci, 2003. 216(1–2): p. 95-106.
[12] 杨勇, 孙斌, 皱健, 等. 聚砜类合金分离膜研究进展[J]. 高分子材料科学与工程, 2000, 16(3): 24-28.
[13] Rahimpour A, Jahanshahi M, Rajaeian B, et al. TiO2 entrapped nano-composite PVDF/SPES membranes: Preparation, characterization, antifouling and antibacterial properties[J]. Desalination, 2011. 278(1–3): 343-353.
[14] Rahimpour A, Madaeni S S, Ghorbani S, et al. The influence of sulfonated polyethersulfone (SPES) on surface nano-morphology and performance of polyethersulfone (PES) membrane[J]. Applied Surface Science, 2010. 256(6): 1825-1831.
[15] 谭翎燕, 刘金盾, 张浩勤. 磺化聚醚砜（SPES）/聚砜（PSF）共混超滤膜的研制[J]. 化工进展, 2007, 26(6):864-868.
[16] Shi W Y, He B Q, Li J X. Esterification of acidified oil with methanol by SPES/PES catalytic membrane [J]. Bioresource Technology, 2011. 102(9): 5389-5393.
[17] Schneier B. Polymer compatibility[J]. Journal of Applied Polymer Science, 1973. 17: 3175-3185.
[18] Biliaderis C G, Lazaridou A, Arvanitoyannis I. Glass transition and physical properties of polyol-plasticised pullulan–starch blends at low moisture[J]. Carbohydrate Polymers, 1999. 40(1): 29-47.
[19] Aerts P, Genne I, Kuypers S, et al. Polysulfone–aerosil composite membranes: Part 2. The influence of the addition of aerosil on the skin characteristics and membrane properties[J]. J Membr Sci, 2000. 178(1–2): 1-11.

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