Application of cosolvent-assisted interfacial polymerization technique to fabricate thin-film composite polyamide pervaporation membranes with PVDF hollow fiber as support

Marquez, Jazmine Aiya D.; Ang, Micah Belle Marie Yap; Doma, Bonifacio T.; Huang, Shu-Hsien; Tsai, Hui-An; Lee, Kueir‐Rarn; Lai, Juin‐Yih

doi:10.1016/j.memsci.2018.07.084

Cited by 48 publications

(24 citation statements)

References 56 publications

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“…Compared with the spectrum of PSf substrate, the new peaks at 1541 cm À1 , 1650 cm À1 , and 1725 cm À1 are correspondent to the vibration of N-H (amide II), C]O (amide I), and COOH groups, respectively. [22][23][24][25] The carboxylic acid groups arise from the hydrolysis of the acyl chlorides, which are unreacted with amine monomers. 3 As shown from Fig.…”

Section: Membrane Characterizationsmentioning

confidence: 99%

Fabrication and characterization of polyamide thin-film composite membrane via interfacial polycondensation for pervaporation separation of salt and arsenic from water

Pham

Tran

et al. 2021

RSC Adv.

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Section: Membrane Characterizationsmentioning

confidence: 99%

Fabrication and characterization of polyamide thin-film composite membrane via interfacial polycondensation for pervaporation separation of salt and arsenic from water

Pham

Tran

et al. 2021

RSC Adv.

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“…Various explorations have been made to address these issues of TFC membranes, such as employing suitable amine and acyl chloride monomers, 5,10,23,24 incorporating hydrophilic additives or co‐solvent in the aqueous or organic phase, 25‐28 as well as optimizing the substrate morphology or surface properties before the IP process 29‐31 . Compared to above methods, second interfacial polymerization (SIP) is considered to be the ideal strategy to obtain the dense and hydrophilic selective layer, because it can easily regulate crosslinking degree and hydrophilicity of selective layer simultaneously using multifunctional group materials with strong hydrophilicity 32 .…”

Section: Introductionmentioning

confidence: 99%

Second interfacial polymerization of thin‐film composite hollow fibers with amine‐cyclodextrins for pervaporation dehydration

Zhu

et al. 2021

AIChE Journal

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High performance thin‐film composite (TFC) hollow fiber membranes have been developed for pervaporation dehydration by second interfacial polymerization (SIP) modification with three kinds of amine‐functionalized β‐cyclodextrin (amine‐CDs), which were synthesized by modifying β‐CD with ammonia, ethylenediamine (EDA), and tris(2‐aminoethyl)amine, respectively. The chemical properties of amine‐CDs and SIP‐modified TFC membranes were characterized by various techniques. The effects of amine‐CD type and SIP parameters (pH or concentration of CD‐EDA solution) were studied systematically to acquire the optimized selective layer of TFC membranes for ethanol dehydration. Among all SIP‐modified TFC membranes, the one with SIP by 2 wt% CD‐EDA aqueous solution (pH = 2) exhibited the most outstanding separation performance with a ultrahigh permeation flux (3,018.0 ± 12.0 g/m2 hr) and permeate concentration (98.7 ± 0.2 wt% water) at 50°C (equivalent to separation factor of 415), contributed by the effectively incorporated CD with rich hydrophilic functional groups and intrinsic nanocavities facilitating the passage of water molecules.

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“…Our present work intends to explore the potential of TFC polyurea membranes fabricated through interfacial polymerization in the uncharted field of pervaporation (interfacial polymerization is generally used for reverse osmosis and nanofiltration processes); moreover, we integrated for the first time the technique of introducing a cosolvent into interfacial polymerization for such an application to improve the membrane performance. A cosolvent acts as a swelling agent that makes polymer chains soft, so they move with more freedom; as a result, the polymer is easy to process and modify [28][29][30][31]. Alcohols are an example of swelling agents, and their added advantages are that they dissolve in amine monomers and are miscible with toluene.…”

Section: Introductionmentioning

confidence: 99%

Cosolvent-Driven Interfacial Polymerization for Superior Separation Performance of Polyurea-Based Pervaporation Membrane

et al. 2021

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A thin-film composite (TFC) polyurea membrane was fabricated for the dehydration of an aqueous tetrahydrofuran (THF) solution through interfacial polymerization, wherein polyethyleneimine (a water-soluble amine monomer) and m-xylene diisocyanate (an oil-soluble diisocyanate monomer) were reacted on the surface of a modified polyacrylonitrile (mPAN) substrate. Cosolvents were used to tailor the membrane properties and increase the membrane permeation flux. Four types of alcohols that differed in the number of carbon (methanol, ethanol, isopropanol, and tert-butanol) were added as cosolvents, serving as swelling agents, to the aqueous-phase monomer solution, and their effect on the membrane properties and pervaporation separation was discussed. Attenuated total reflection Fourier transform infrared spectroscopy confirmed the formation of a polyurea layer on mPAN. Field emission scanning electron microscopy and surface water contact angle analysis indicated no change in the membrane morphology and hydrophilicity, respectively, despite the addition of cosolvents for interfacial polymerization. The TFC membrane produced when ethanol was the cosolvent exhibited the highest separation performance (permeation flux = 1006 ± 103 g·m−2·h−1; water concentration in permeate = 98.8 ± 0.3 wt.%) for an aqueous feed solution containing 90 wt.% THF at 25 °C. During the membrane formation, ethanol caused the polyurea layer to loosen and to acquire a certain degree of cross-linking. The optimal fabrication conditions were as follows: 10 wt.% ethanol as cosolvent; membrane curing temperature = 50 °C; membrane curing time = 30 min.

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Application of cosolvent-assisted interfacial polymerization technique to fabricate thin-film composite polyamide pervaporation membranes with PVDF hollow fiber as support

Cited by 48 publications

References 56 publications

Fabrication and characterization of polyamide thin-film composite membrane via interfacial polycondensation for pervaporation separation of salt and arsenic from water

Fabrication and characterization of polyamide thin-film composite membrane via interfacial polycondensation for pervaporation separation of salt and arsenic from water

Second interfacial polymerization of thin‐film composite hollow fibers with amine‐cyclodextrins for pervaporation dehydration

Cosolvent-Driven Interfacial Polymerization for Superior Separation Performance of Polyurea-Based Pervaporation Membrane

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