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Vatanpour V, Dehqan A, Paziresh S, Zinadini S, Zinatizadeh AA, Koyuncu I. Polylactic acid in the fabrication of separation membranes: A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121433] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Lakshmy KS, Lal D, Nair A, Babu A, Das H, Govind N, Dmitrenko M, Kuzminova A, Korniak A, Penkova A, Tharayil A, Thomas S. Pervaporation as a Successful Tool in the Treatment of Industrial Liquid Mixtures. Polymers (Basel) 2022; 14:polym14081604. [PMID: 35458354 PMCID: PMC9029804 DOI: 10.3390/polym14081604] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/02/2022] [Accepted: 04/08/2022] [Indexed: 02/01/2023] Open
Abstract
Pervaporation is one of the most active topics in membrane research, and it has time and again proven to be an essential component for chemical separation. It has been employed in the removal of impurities from raw materials, separation of products and by-products after reaction, and separation of pollutants from water. Given the global problem of water pollution, this approach is efficient in removing hazardous substances from water bodies. Conventional processes are based on thermodynamic equilibria involving a phase transition such as distillation and liquid-liquid extraction. These techniques have a relatively low efficacy and nowadays they are not recommended because it is not sustainable in terms of energy consumption and/or waste generation. Pervaporation emerged in the 1980s and is now becoming a popular membrane separation technology because of its intrinsic features such as low energy requirements, cheap separation costs, and good quality product output. The focus of this review is on current developments in pervaporation, mass transport in membranes, material selection, fabrication and characterization techniques, and applications of various membranes in the separation of chemicals from water.
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Affiliation(s)
- Kadavil Subhash Lakshmy
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Devika Lal
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Anandu Nair
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Allan Babu
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Haritha Das
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Neethu Govind
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
| | - Mariia Dmitrenko
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (M.D.); (A.K.); (A.K.)
| | - Anna Kuzminova
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (M.D.); (A.K.); (A.K.)
| | - Aleksandra Korniak
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (M.D.); (A.K.); (A.K.)
| | - Anastasia Penkova
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (M.D.); (A.K.); (A.K.)
- Correspondence: (A.P.); (A.T.)
| | - Abhimanyu Tharayil
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
- Correspondence: (A.P.); (A.T.)
| | - Sabu Thomas
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, Kerala, India; (K.S.L.); (D.L.); (A.N.); (A.B.); (H.D.); (N.G.); (S.T.)
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Unlu D. High-efficiency pervaporative separation of fuel bioadditive methylal from methanol by poly(vinyl alcohol)/poly(vinylpyrrolidone) blend membrane. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-022-00231-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Hashim Abed Almwli H, Mousavi SM, Kiani S. Preparation of poly(butylene succinate)/polyvinylpyrrolidone blend membrane for pervaporation dehydration of acetone. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2020.10.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Castro-Muñoz R. Breakthroughs on tailoring pervaporation membranes for water desalination: A review. WATER RESEARCH 2020; 187:116428. [PMID: 33011568 DOI: 10.1016/j.watres.2020.116428] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/17/2020] [Accepted: 09/14/2020] [Indexed: 05/24/2023]
Abstract
Due to the increase in worldwide population and urbanization, water scarcity is today one of the tough challenges of society. To date, several ongoing initiatives and strategies are aiming to find feasible alternatives to produce drinking water. Seawater desalination is addressed as a latent alternative to solve such an issue. When dealing with desalination, membrane-based technologies (such as reverse osmosis, membrane distillation, pervaporation, among others) have been successfully proposed. Pervaporation (PV) is likely the membrane operation with the less permeation rate but providing high rejection of salts. Thereby, "membranologists" are extensively working in developing new suitable membranes for pervaporation desalination. Therefore, the goal of this review paper is to elucidate and provide a comprehensive outlook of the most recent works (over the last 5-years) at developing new concepts of membranes (e.g. ultra-thin, mixed matrix/composite and inorganic) for desalination, as well as the relevant strategies in fabricating enhanced PV membranes. At this point, an important emphasis has been paid to the relevant insights in the field. This paper also addresses some principles of PV and the main drawbacks of the technique and its membranes. Through reviewing the literature, the future trends, needs, and recommendations for the new researchers are given.
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Affiliation(s)
- Roberto Castro-Muñoz
- Tecnologico de Monterrey, Campus Toluca, Avenida Eduardo Monroy Cárdenas 2000 San Antonio Buenavista, 50110Toluca de Lerdo, Mexico.
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Castro-Muñoz R, Galiano F, Figoli A. Recent advances in pervaporation hollow fiber membranes for dehydration of organics. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.09.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pervaporation separation of isopropylbenzene from water using four different polymeric membranes: Membrane preparation, modification, characterization, and performance evaluation. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.09.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Li W, Yu Q, Yao H, Zhu Y, Topham PD, Yue K, Ren L, Wang L. Superhydrophobic hierarchical fiber/bead composite membranes for efficient treatment of burns. Acta Biomater 2019; 92:60-70. [PMID: 31096044 DOI: 10.1016/j.actbio.2019.05.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/14/2019] [Accepted: 05/09/2019] [Indexed: 01/16/2023]
Abstract
One of the current challenges in burn wound care is the development of multifunctional dressings that can protect the wound from bacteria or organisms and promote skin regeneration and tissue reconstitution. To this end, we report the design and fabrication of a composite electrospun membrane, comprised of electrospun polylactide: poly(vinyl pyrrolidone)/polylactide: poly(ethylene glycol) (PLA:PVP/PLA:PEG) core/shell fibers loaded with bioactive agents, as a functionally integrated wound dressing for efficient burns treatment. Different mass ratios of PLA:PVP in the shell were screened to optimize mechanical, physicochemical, and biological properties, in addition to controlled release profiles of loaded antimicrobial peptides (AMPs) from the fibers for desirable antibacterial activity. Fibroblasts were shown to readily adhere and proliferate when cultured on the membrane, indicating good in vitro cytocompatibility. The introduction of PLA beads by electrospraying on one side of the membrane resulted in biomimetic micro-nanostructures similar to those of lotus leaves. This designer structure rendered the composite membranes with superhydrophobic property to inhibit the adhesion/spreading of exogenous bacteria and other microbes. The administration of the resulting composite fibrous membrane on burnt skin in an infected rat model led to faster healing than a conventional product (sterile silicone membrane) and control detailed herein. These composite fibrous membranes loaded with bioactive drugs provide an integrated strategy for promoting burn wound healing and skin regeneration. STATEMENT OF SIGNIFICANCE: To address an urgent need in complex clinical requirements on developing a new generation of wound dressings with integrated functionalities. This article reports research work on a hierarchical fiber/bead composite membranes design, which combines a lotus-leaf-like superhydrophobic surface with drugs preloaded in the core and shell of fibers for effective burn treatment. This demonstrates a balance between simplified preparation processes and increased multifunctionality of the wound dressings. The creation of hierarchically structured surfaces can be readily achieved by electrospinning, and the composite dressings possessed a considerable mechanical strength, effective wound exudate absorption and permeability, good biocompatibility, broad antibacterial ability and promoting wound healing etc. Thus, our work unveils a promising strategy for the development of functionally integrated wound dressings for burn wound care.
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Affiliation(s)
- Weichang Li
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Qianqian Yu
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hang Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Yue Zhu
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Paul D Topham
- Aston Institute of Materials Research, Aston University, Birmingham B4 7ET, UK
| | - Kan Yue
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Li Ren
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China.
| | - Linge Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
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Castro-Muñoz R, Buera-González J, Iglesia ÓDL, Galiano F, Fíla V, Malankowska M, Rubio C, Figoli A, Téllez C, Coronas J. Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.076] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Galiano F, Briceño K, Marino T, Molino A, Christensen KV, Figoli A. Advances in biopolymer-based membrane preparation and applications. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.07.059] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Afsar F, Saljoughi E, Mousavi SM. Poly (caprolactone)/poly (ethylene glycol) pervaporation blend membranes: Synthesis, characterization, and performance. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Faranak Afsar
- Chemical Engineering Department, Faculty of Engineering; Ferdowsi University of Mashhad; Mashhad Iran
| | - Ehsan Saljoughi
- Chemical Engineering Department, Faculty of Engineering; Ferdowsi University of Mashhad; Mashhad Iran
| | - Seyed Mahmoud Mousavi
- Chemical Engineering Department, Faculty of Engineering; Ferdowsi University of Mashhad; Mashhad Iran
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Castro-Muñoz R, Galiano F, Fíla V, Drioli E, Figoli A. Mixed matrix membranes (MMMs) for ethanol purification through pervaporation: current state of the art. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0115] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
Over the last few decades, different polymers have been employed as materials in membrane preparation for pervaporation (PV) application, which are currently used in the preparation of mixed matrix membranes (MMMs) for ethanol recovery and ethanol dehydration. The ethanol-water and water-ethanol mixtures are, in fact, the most studied PV systems since the bioethanol production is strongly increasing its demand. The present review focuses on the current state of the art and future trends on ethanol purification by using MMMs in PV. A particular emphasis will, therefore, be placed on the enhancement of specific components transport and selectivity through the incorporation of inorganic materials into polymeric membranes, mentioning key principles on suitable filler selection for a synergistic effect toward such separations. In addition, the following topics will be discussed: (i) the generalities of PV, including the theoretical aspects and its role in separation; (ii) a general overview of the methodologies for the preparation of MMMs; and (iii) the most recent findings based on MMMs for both ethanol recovery and ethanol dehydration for better evolution in the field. From the last decade of literature inputs, the poly(vinyl alcohol) has been the most used polymeric matrix targeting ethanol dehydration, while the zeolites have been the most used embedded materials. Today, the latest developments on MMM preparation declare that the future efforts will be directed to the chemical modification of polymeric materials as well as the incorporation of novel fillers or enhancing the existing ones through chemical modification.
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Affiliation(s)
- Roberto Castro-Muñoz
- Institute on Membrane Technology, ITM-CNR , c/o University of Calabria , 87030 Rende (CS) , Italy
- University of Chemistry and Technology Prague , Department of Inorganic Technology , Prague 6 , Czech Republic
- Nanoscience Institute of Aragon (INA) , Universidad de Zaragoza , 50018 Zaragoza , Spain
| | - Francesco Galiano
- Institute on Membrane Technology, ITM-CNR , c/o University of Calabria , Via P. Bucci 17c , 87030 Rende (CS) , Italy
| | - Vlastimil Fíla
- University of Chemistry and Technology Prague , Department of Inorganic Technology , Prague 6 , Czech Republic
| | - Enrico Drioli
- Institute on Membrane Technology, ITM-CNR , c/o University of Calabria , 87030 Rende (CS) , Italy
| | - Alberto Figoli
- Institute on Membrane Technology, ITM-CNR , c/o University of Calabria , Via P. Bucci 17c , 87030 Rende (CS) , Italy
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Hassan Hassan Abdellatif F, Babin J, Arnal-Herault C, Nouvel C, Six JL, Jonquieres A. Bio-based membranes for ethyl tert-butyl ether (ETBE) bio-fuel purification by pervaporation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.11.078] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Zhang Q, Lu X, Zhang Q, Zhang L, Li S, Liu S. Flux and Passage Enhancement in Hemodialysis by Incorporating Compound Additive into PVDF Polymer Matrix. MEMBRANES 2016; 6:membranes6040045. [PMID: 27775566 PMCID: PMC5192401 DOI: 10.3390/membranes6040045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/18/2016] [Accepted: 09/21/2016] [Indexed: 11/21/2022]
Abstract
In this study, Polyvinylidene fluoride (PVDF) hollow fiber hemodialysis membranes were prepared by non-solvent induced phase separation (NIPS) with compound addtive. The compound additive was made with polyvinyl pyrrolidone (PVP) and Poly ethylene glycol (PEG). The results showed that the modified PVDF membrane had better separation performance than virgin PVDF membrane. The UF flux of modified PVDF membrane can reach 684 L·h−1·m−2 and lysozyme (LZM) passage is 72.6% while virgin PVDF membrane is 313 L·h−1·m−2 and 53.2%. At the same time, the biocompatibility of PVDF membranes was also improved. Compared with commercial polysulfone hemodialysis membrane (Fresenius F60S membrane), the modified PVDF membrane had better mechanical and separation performance. The stress and tensile elongation of modified PVDF membrane was 0.94 MPa and 352% while Fresenius F60S membrane was 0.79 MPa and 59%. The LZM passage reached 72.6% while Fresenius F60S membrane was 54.4%. It was proven that the modified PVDF membrane showed better hydrophilicity, antithrombogenicity, less BSA adsorption, and lower hemolytic ratio and adhesion of platelets. Water contact angle and BSA adsorption of the modified PVDF membrane are 38° and 45 mg/m2 while Fresenius F60S membrane are 64° and 235 mg/m2. Prothrombin time (PT) and activated partial thromboplastin time (APTT) of the modified PVDF membrane are 56.5 s and 25.8 s while Fresenius F60S membrane is 35.7 s and 16.6 s. However, further biocompatibility evaluation is needed to obtain a more comprehensive conclusion.
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Affiliation(s)
- Qinglei Zhang
- Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
| | - Xiaolong Lu
- Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin 300387, China.
| | - Qingzhao Zhang
- Xintai Traditional Chinese Medical Hospital, Xintai 271200, China.
| | - Lei Zhang
- Xintai Second Peoples Hospital, Xintai 271219, China.
| | - Suoding Li
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
| | - Shaobin Liu
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
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Falbo F, Santoro S, Galiano F, Simone S, Davoli M, Drioli E, Figoli A. Organic/organic mixture separation by using novel ECTFE polymeric pervaporation membranes. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.06.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fan S, Xiao Z, Li M. Energy efficient of ethanol recovery in pervaporation membrane bioreactor with mechanical vapor compression eliminating the cold traps. BIORESOURCE TECHNOLOGY 2016; 211:24-30. [PMID: 26995618 DOI: 10.1016/j.biortech.2016.03.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/09/2016] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
An energy efficient pervaporation membrane bioreactor with mechanical vapor compression was developed for ethanol recovery during the process of fermentation coupled with pervaporation. Part of the permeate vapor at the membrane downstream under the vacuum condition was condensed by running water at the first condenser and the non-condensed vapor enriched with ethanol was compressed to the atmospheric pressure and pumped into the second condenser, where the vapor was easily condensed into a liquid by air. Three runs of fermentation-pervaporation experiment have been carried out lasting for 192h, 264h and 360h respectively. Complete vapor recovery validated the novel pervaporation membrane bioreactor. The total flux of the polydimethylsiloxane (PDMS) membrane was in the range of 350gm(-2)h(-1) and 600gm(-2)h(-1). Compared with the traditional cold traps condensation, mechanical vapor compression behaved a dominant energy saving feature.
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Affiliation(s)
- Senqing Fan
- Institute of Systems Engineering, China Academy of Engineering Physics, 621999 Mianyang, China
| | - Zeyi Xiao
- School of Chemical Engineering, Sichuan University, 610065 Chengdu, China.
| | - Minghai Li
- Institute of Systems Engineering, China Academy of Engineering Physics, 621999 Mianyang, China
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A computer simulation study on the diffusion and permeation of dimethylformamide/water mixtures through poly(vinyl alcohol)/poly(acrylic acid) blend membranes. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2014.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mahdi T, Ahmad A, Nasef MM, Ripin A. State-of-the-Art Technologies for Separation of Azeotropic Mixtures. SEPARATION AND PURIFICATION REVIEWS 2014. [DOI: 10.1080/15422119.2014.963607] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Hassani F, Mousavi SM, Saghatoleslami N, Ghaffarian V. Polyethersulfone/Poly(D,L-lactide) Blend Membranes: Preparation, Characterization, and Performance. Chem Eng Technol 2014. [DOI: 10.1002/ceat.201300477] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Yu L, Yang F, Xiang M. Phase separation in a PSf/DMF/water system: a proposed mechanism for macrovoid formation. RSC Adv 2014. [DOI: 10.1039/c4ra06088a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The formation of polysulfone (PSf) membranes from the PSf/N,N-dimethylformamide (DMF)/water system was studied with optical microscopic observations.
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Affiliation(s)
- Lei Yu
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, People's Republic of China
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Han GL, Gong Y, Zhang QG, Liu QL. Polyarylethersulfone with cardo/poly (vinyl pyrrolidone) blend membrane for pervaporation of methanol/methyl tert-butyl ether mixtures. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.07.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Xing Q, Dong X, Li R, Yang H, Han CC, Wang D. Morphology and performance control of PLLA-based porous membranes by phase separation. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.08.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Meireles IT, Brazinha C, Crespo JG, Coelhoso IM. A new microbial polysaccharide membrane for ethanol dehydration by pervaporation. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2012.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Fernández L, Sánchez M, Carmona FJ, Palacio L, Calvo JI, Hernández A, Prádanos P. Analysis of the grafting process of PVP on a silicon surface by AFM and contact angle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11636-11649. [PMID: 21806047 DOI: 10.1021/la201683p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Silicon wafers have been silylated with VTMS (vinyltrimethoxysilane) and hydrolyzed. Subsequently, PVP (polyvinyl pyrrolidone) was grafted onto the silylated surface by two different techniques: the grafting-through (GT) and the grafting-onto techniques (GO). The measurement of contact angles along with the topography analysis by atomic force microscopy (AFM) has allowed monitoring the different stages of the process and the temporal evolution of polymer grafting. The results have demonstrated the feasibility of both methods of grafting but have shown that the GT method gives a higher density of polymer-grafted chains. The AFM technique in adequate liquid environments has been proven to permit the surface density of chains to be distinguished by both methods and to estimate the length of the resulting PVP chains.
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Affiliation(s)
- L Fernández
- Dpto de Química, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina
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Zereshki S, Figoli A, Madaeni S, Galiano F, Drioli E. Pervaporation separation of ethanol/ETBE mixture using poly(lactic acid)/poly(vinyl pyrrolidone) blend membranes. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.02.031] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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