APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Zhixiao Liu,Liang Wang,Zhiming Mi,Sizhuo Jin,Daming Wang,Xiaogang Zhao,Hongwei Zhou,Chunhai Chen
In this study, carboxyl potassium salt polysulfone PSF-COOK60% was selected as an additive and carboxylated polysulfone PSF-COOH60% was identified as a membrane matrix material to prepare mixed matrix membranes via a traditional phase separation method. The viscosity of the casting solutions, as well as the electronegativity , hydrophilicity , and morphologies of the mixed matrix membranes, greatly changed with the addition of PSF-COOK60%. This was because -COOK was more easily ionized than -COOH into -COO − , which affected the charges, conformations, and hydrophilicity of the polymer chains. In particular, the membrane with a PSF-COOK60%:PSF-COOH60% ratio of 3:7 (M3) exhibited a minimum aperture of 1.825 nm and a maximum electronegativity of −29.9 mV. M3 offered outstanding separation efficiency of dye/salt mixtures as seen in the rejection rates of Congo red (as high as 95.5%) and organic salts (as low as 5.6%), as well as the pure water flux of 153.8 L/m 2 ·h·bar. Furthermore, M3 had excellent anti-dye-fouling performance and showed wide application conditions. Therefore, M3 is an ideal candidate for separation membranes for the fractionation of dye/salt mixtures. The PSF-COOK and other polymer carboxylates can be used as a new kind of additive to change the morphology and chemical properties of the membranes.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Saudi Chemical Society
·
2021
·
IF 3.932
Chaoqun Wu,Jiuhan Zheng,Jianhua Hu
Functional matrix membranes formed by blending hydrophilic polymers with polysulfone (PSF) can provide functional surfaces with ameliorative hydrophilicity and possess excellent antifouling resistance over a wide range of applications. Zwitterionic polymers have better antifouling properties, but their homopolymers should not be used directly because of their poor mechanical properties and strong water absorption. To solve these problems, a living radical polymerization process was used to prepare P(4VP x - r -SBMA y ) copolymers comprising of zwitterion side chains and hydrophobic 4-vinylpyridine (4VP). The modified PSF membranes were then constructed by adding different ratios of P(4VP x - r -SBMA y ) via phase inversion/immersion precipitation technique. The presence of 4VP and zwitterion chains of copolymer was verified by 1 H nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) analyses, and the successful surface functionalization was further confirmed with atomic force microscopy (AFM), scanning electron microscopy (SEM) and water contact angle measurement. Protein adsorption, bacterium adhesion and cell attachment assays showed that the functional PSF membrane surfaces exhibited superior hydrophilicity and antifouling performance.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2017
·
IF 3.151
Lei Miao,Yang Yang,Yuanyuan Tu,Shudong Lin,Jiwen Hu,Zhuo Du,Min Zhang,Yue Li
Reported herein is a chiral resolution polysulfone membrane prepared via mussel-inspired chemistry . Polysulfone membranes were modified with dopamine, which underwent in situ polymerization on the membrane substrate, and β-cyclodextrin was used as a chiral selector. The preparation conditions were optimized and the resultant membrane obtained under these conditions showed desirable water permeability (~ 24.0 L/(m 2 ·h·bar)) and surface hydrophilicity (contact angle is lower than 37.1 ± 3.4°). The polydopamine layer exhibited desirable stability in a series of aqueous solutions with pH values ranging from 4.0–6.0 or in isopropanol for less than an hour (detachment ratio was lower than 1.2%). Characterization of the surface morphology and XPS elemental analysis revealed that the membrane surface was fully coated by polydopamine and a β-cyclodextrin monolayer formed on the surface of the polydopamine coating. The grafting density of β-cyclodextrin calculated from the XPS results was ~ 11.5 mg/m 2 . The optimal pH value for the resolution of D - or L -tryptophan feed solution was 5.90 and a low concentration of the feed solution provided a high resolution efficiency. The enantiomeric excess (e.e.) value of the membrane for Trp racemic mixture achieved to ~ 3.2% with the feed solution of tryptophan racemic mixture was 5 × 10 − 5 mol/L and the operating pressure was 0.1 MPa. After 3 times of isopropanol-washed regeneration processes, the e.e. value was still stable around to ~ 3%. The mussel-inspired chemically modified membrane exhibited the same mechanical properties as the purely polysulfone-based membrane. The methods and results provided in this paper may facilitate the large-scale production of chiral resolution membranes or other chiral separation membranes with higher performance.
研究领域:
材料科学
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化学工程
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生物医学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
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IF 6.216
Haitao Wang,Wei Wang,Liang Wang,Bin Zhao,Zhaohui Zhang,Xiaoming Xia,Huifang Yang,Yu Xue,Na Chang
A novel graphene oxide (GO) immobilized quaternized polysulfone (PSF) hybrid membrane (Q-PSF/GO) was prepared via phase inversion method using GO as an additive, and triethanolamine (TEOA) as an aminated agent. TEOA, which reacted with both PSF and GO, could improve the dispersibility and compatibility of GO in membrane casting solution. The membrane exhibited highest permeability and rejection rate to bovine serum albumin (BSA) compared to bare PSF membrane and PSF/GO membrane. Expressly, when the same amount of GO was incorporated into the PSF/GO membrane and the Q-PSF/GO membrane, the Q-PSF/GO membrane showed a more satisfactory performance. The water contact angle measurement confirmed the increased hydrophilicity of the Q-PSF/GO hybrid membrane. FE-SEM images proved that the Q-PSF/GO 0.5 membrane possessed larger and more vertical finger-like pore structure in comparison with bare PSF membrane and PSF/GO membrane. Furthermore, it was proved by CLSM images that a thick and incompact layer of BSA was absorbed onto the surface of the Q-PSF/GO 0.5 membrane. However, the absorbed layer of BSA on Q-PSF/GO 0.5 membrane surface could be easily washed away compared to the bare PSF membrane.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2021
·Vol. 139
·期 9
·51729
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IF 3.125
Yan Zhang,Bin Chen,Haichao Zhao,Lijing Zhu
Mussel-inspired dopamine (DA) surface modification has been widely recognized as a promoting strategy to design and exploit valuable multifunctional materials. Herein, polysulfone porous membrane was modified by the co-deposition of DA and sodium polystyrene sulfonate. In the case of extended duration of the reaction time, the water contact angle of the membrane decreased by 30 ° and the color of the modified membrane presented dark. The rejection rates of bovine serum albumin and lysozyme can close to 100% of the modified membrane and the bacteriostatic rate reached 100% at 18 h. In addition, the co-deposited membrane performed well bactericidal and excellent antiadhesion to Escherichia coli . This work provides a simple way for the fabrication of an antibacterial surface.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
·
2023
·
IF 1.3
Muhammad Usman Saleemi,Maria Wasim,Aneela Sabir,Muhammad Shafiq,Shahid Munir
Mussel inspired chemistry has gain tremendous interest in the field of membrane science and technology. Inspired by the adhesive proteins present in mussels, approaches involving the dopamine to modify the surfaces have become the predominantly striking strategy. In this work, an effective strategy is proposed to improve the selectivity of vapour grown carbon nanofibers (VGCNF) via the bio inspired polydopamine (PDA) functionalization approach. The varying concentration of modified VGCNF (D-A-VGCNFs) were employed in polysulphone (PS) membrane. The morphological characteristics of membranes were evaluated by SEM and AFM. Data depicted the uniform distribution of nanofibers (NFs) in the media and amended microstructure of the membranes. Modified membrane having the maximum amount of D-A-VGCNFs (DM5) proved to be more hydrophilic in nature with contact angle value of 57° whereas the CA value of pure PS membrane (DM0) was 76°. The performance test confirmed that the DM5 has enhanced dye rejection ratios which are 95%, 97% and 96% with improved permeate fluxes (like 56 L/m 2 .h, 40 L/m 2 .h and 53 L/m 2 .h for Direct Red 31, Direct Blue 86 and Direct Yellow 4 dyes respectively. Furthermore, DM5 showed much better anti-fouling properties after several cycles as compared to DM0. So, this work proved to be a milestone in the applications of nanofiltration (NF) membranes to remove the dyes from the textile wastewater.
研究领域:
材料科学
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环境工程
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膜技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
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IF 5.876
Lan Li,Mingna Feng,Mingxia Wang,Zhihao Jiao,Jixue Li,Linfang Dong,Feng Yan
Background In order to improve the selective separation performance of the membrane for Li + and enhance the separation efficiency, a crown ether functionalized polysulfone membrane was prepared in this paper, and the Li + was separated by electrodialysis process. Methods Chloromethylated polysulfone (CMPSf) was used as the base membrane, 4′-aminobenzo-12-crown-4-ether (AB12C4) was in-situ grafted onto the surface of CMPSf membrane to obtain the PSf-sg-AB12C4 membrane. The chemical structure of the membrane surface was characterized by ATR-FTIR and XPS. The surface and cross-sectional morphologies of the membrane were characterized by FESEM. The PSf-sg-AB12C4 membrane was used for selective separation of Li + by membrane coupling with electric field. Fingings The results show that the CMPSf membranes and the PSf-sg-AB12C4 porous membrane have almost no selective separation performance for Li + , while the PSf-sg-AB12C4 dense membrane can selectively separate Li + . After optimizing the conditions of voltage, ion concentration and solution pH, the separation factor of the PSf-sg-AB12C4 dense membrane for Mg 2+ to Li + is up to 32.6. In addition, the separation factors of coexisting ions such as Na + , K + , Ca 2+ to Li + are all higher than that of Mg 2+ to Li + , suggesting that the PSf-sg-AB12C4 dense membrane is a promising material for selective separation of Li + from brine.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
高影响因子
POLYMER
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2021
·
IF 4.43
Xiaojiao Li,Hong-bin Sun,Xudong Sun
Polymeric membranes obtained much attention for decades owing to low cost, ease of process, and operation for battery separators, water purification , medical, etc., especially for the preparation of portable device materials. In this paper, we designed a membrane with polysulfone (PSF) grafted anthraquinone-hydroanthraquinone, namely the PSFAQ membrane. Various characterization (such as field emission scanning electron microscopy , transmission electron microscopy , etc.) and battery performance (such as galvanostatic charge/discharge test, cyclic voltammetry , etc.) indicated that the PSFAQ polymer membrane as an electrode can improve its electrochemical performance through pores and exposed anthraquinone-hydroanthraquinone redox couple. Zinc ion battery (ZIB) was assembled with PSFAQ membrane and metallic zinc as the electrode pair. This research proposes a new, safe, and inexpensive material that can be used for water system energy storage.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Lijing Zhu,Haiming Song,Jiarong Wang,Lixin Xue
Poly(vinyl pyrrolidone) (PVP) and its copolymers have been widely employed for the modification of hemodiafiltration membranes due to their excellent hydrophilicity, antifouling and hemocompatibility. However, challenges still remain to simplify the modification procedure and to improve the utilization efficiency. In this paper, antifouling and hemocompatibility polysulfone (PSf) hemodiafiltration membranes were fabricated via in situ cross-linked polymerization of vinyl pyrrolidone (VP) and vinyltriethoxysilane (VTEOS) in PSf solutions and non-solvent induced phase separation (NIPS) technique. The prepared membranes were characterized by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), which suggested that VP and VTEOS have been cross-linked copolymerized in PSf membranes. The modified PSf membranes with high polymer content showed improved hydrophilicity, ultrafiltration and protein antifouling ability. In addition, the modified PSf membranes showed lower protein adsorption, inhibited platelet adhesion and deformation, prolonged the activated partial thromboplastin time (APTT), prothrombin time (PT), and decreased the content of fibrinogen (FIB) transferring to fibrin, indicating enhanced hemocompatibility. In a word, the present work provides a simple and effective one-step modification method to construct PSf membranes with improved hydrophilicity, antifouling and hemocompatibility.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2020
·
IF 4.389
Sheng Yan,Ming-Ming Tu,Yun-Ren Qiu
Polysulfone (PSf) membrane is widely employed in blood purification fields, but the blood compatibility of PSf membrane is not adequate. To improve the hemocompatibility of PSf membrane, 4-(chloromethyl)benzoic acid (CMBA) and sulfonated hydroxypropyl chitosan (SHPCS) were grafted onto PSf membrane surface. In our strategy, CMBA was firstly grafted on the PSf membrane surface through the Friedel-Crafts alkylation reaction, and the product was named BAPSf membrane. Then, SHPCS was grafted onto the BAPSf membrane surface by esterification , and the product was named SHPCS-BAPSf membrane. The effects of temperature and reaction time on the productivity of BAPSf and the grafting density of carboxyl and the effects of reaction time on the grafting density of SHPCS grafted onto the BAPSf membrane surface were studied. The SHPCS-BAPSf membranes are investigated by ATR-FTIR, XPS , contact angle measurements and evaluated by blood compatibility in vitro. The results reveal that the hydrophilicity of SHPCS-BAPSf membranes were grealy improved and the evaluation of protein adsorption , hemolysis test, platelet adhesion plasma recalcification time(PRT), activated partial thromboplastin time(APTT), prothrombin time(PT) and thrombin time(TT) confirmed that the SHPCS-BAPSf membranes have remarkable blood compatibility.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2024
·Vol. 16
·期 11
·1555
·
IF 4.7
Sheng Yan,Yunren Qiu
The most prevalent type of hemodialysis membrane is polysulfone (PSf). However, due to inadequate biocompatibility, it significantly compromises the safety of dialysis for patients. In this study, we modify the surface of the PSf membrane with 2,4-dihydroxybenzophenone (DBPh) groups to serve as anchoring sites during UV irradiation. Subsequently, a tailored sulfonated dihydroxy propyl chitosan (SDHPCS) is grafted onto the modified PSf membrane to compensate for the deficiencies in hydrophilic additives. The modified PSf membrane exhibits outstanding hydrophilicity and stability, as demonstrated by its characterization and evaluation. This paper focuses on investigating the interaction between platelet membrane formation, protein adsorption, and anticoagulant activity. The results show that the modified PSf membrane exhibits remarkable enhancement in surface hydrophilicity, leading to a significant reduction in protein and platelet adsorption as well as adhesion.
研究领域:
生物医学工程
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材料科学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Hao-Ran Zuo,Jia-Bei Fu,Gui-Ping Cao,Nian Hu,Hui Lu,Hui-Qing Liu,Peng-Peng Chen,Jie Yu
Monodisperse surface-charged submicron polystyrene particles were designed, synthesized, and blended into polysulfone (PSF) support layer to prepare forward osmosis (FO) membrane with high performance. The membrane incorporated with particles were characterized with respect to morphology, porosity, and internal osmotic pressure (IOP). Results showed that the polymer particles not only increased the hydrophilicity and porosity of support layer, but also generated considerable IOP, which helped markedly decreasing the structure parameter from 1550 to 670 μm. The measured mass transfer parameters further confirmed the beneficial effects of the surface-charged submicron polymer particles on the performance of FO membrane. For instance, the water permeability coefficient (5.37 L m −2 h −1 bar −1 ) and water flux (49.7 L m −2 h −1 ) of the FO membrane incorporated with 5 wt% particles were almost twice as much as that of FO membrane without incorporation. This study suggests that monodisperse surface-charged submicron polymer particles are potential modifiers for improving the performance of FO membranes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）