Performance of a composite membrane of a perfluorodioxole copolymer in organic solvent nanofiltration

Chau, John; Basak, Prithish; Kaur, Jasmine; Hu, Yucheng; Sirkar, Kamalesh K.

doi:10.1016/j.seppur.2018.01.054

Cited by 29 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Perfluorinated polymers are soluble in a limited number of fluorinated liquids and exhibit excellent resistance to the vast majority of organic solvents. Recently, Chau reported solvent permeability and solute rejection data for a series of perfluorodioxole copolymers, such as Hyflon®AD and Cytop® (Chau et al, 2018 ). Solvent (methanol, hydrocarbons, aromatics, THF) sorption in perfluorodioxole copolymers is about 1% wt, which is much lower than in other glassy polymers.…”

Section: Recent Advances and Future Directions In Osnmentioning

confidence: 99%

“…This class of materials includes glassy polymers made of condensed aromatic rings with superior stability in solvents, such as polybenzimidazoles (Vogel and Marvel, 1961 ; Valtcheva et al, 2014 , 2015 ; Borjigin et al, 2015 ) and polymers of intrinsic microporosity (PIMs) (Budd et al, 2004 ; Fritsch et al, 2012 ; Gorgojo et al, 2014 ; Ogieglo et al, 2017 ). Perfluorinated polymers (Chau et al, 2018 ), polyether ether ketone (PEEK) (Da Silva Burgal et al, 2015 , 2017 ), and polyarylates (Jimenez-Salomon et al, 2016 ) also received significant attention for separations in harsh environments. In this review, we provide a detailed discussion of these materials, including synthesis routes, transport properties and property-structure correlations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Galizia

Bye

2018

Front. Chem.

View full text Add to dashboard Cite

The vast majority of industrial chemical synthesis occurs in organic solution. Solute concentration and solvent recovery consume ~50% of the energy required to produce chemicals and pose problems that are as relevant as the synthesis process itself. Separation and purification processes often involve a phase change and, as such, they are highly energy-intensive. However, novel, energy-efficient technologies based on polymer membranes are emerging as a viable alternative to thermal processes. Despite organic solvent nanofiltration (OSN) could revolutionize the chemical, petrochemical, food and pharmaceutical industry, its development is still in its infancy for two reasons: (i) the lack of fundamental knowledge of elemental transport phenomena in OSN membranes, and (ii) the instability of traditional polymer materials in chemically challenging environments. While the latter issue has been partially solved, the former was not addressed at all. Moreover, the few data available about solute and solvent transport in OSN membranes are often interpreted using inappropriate theoretical tools, which contributes to the spread of misleading conclusions in the literature. In this review we provide the state of the art of organic solvent nanofiltration using polymeric membranes. First, theoretical models useful to interpret experimental data are discussed and some misleading conclusions commonly reported in the literature are highlighted. Then, currently available materials are reviewed. Finally, materials that could revolutionize OSN in the future are identified. Among the possible applications of OSN, isomers separation could open a new era in chemical engineering and polymer science in the years to come.

show abstract

Section: Recent Advances and Future Directions In Osnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Galizia

Bye

2018

Front. Chem.

View full text Add to dashboard Cite

show abstract

“…Due to their lower interaction and high hydrophobicity, the swelling extent is very limited. Furthermore, this new class of polymers has limited maximum free volume, which allow single molecule permeation , . Studies about such new membranes for nonaqueous processes are highly important and necessary, however, they demand time and high investments until their large‐scale commercialization.…”

Section: Introductionmentioning

confidence: 99%

Impact of Organic Solvents on Physicochemical Properties of Nanofiltration and Reverse‐Osmosis Membranes

et al. 2019

View full text Add to dashboard Cite

Polymeric membranes subjected to the permeation of n‐hexane were characterized and the influence of pretreatment with ethanol on the properties of the membranes was studied to assess membrane performance and stability. The results suggest that the selectivity of the membrane depends not only on the pore size, but also to a great extent on the interaction between solvent and polymer. An increase in membrane roughness and contact angle was observed for all membranes after pretreatment with ethanol and n‐hexane permeation. Moreover, the surface free energy decreased after solvents exposure, indicating an increase in membrane surface hydrophobicity and polymer swelling. The studied membranes show feasibility of use for the recovery of solvents, if suitable process parameters are selected.

show abstract

“…[ 32–34 ] However, the strong adsorption of organic solvents onto polymeric membranes has hindered their applications in future industries; this is because the high sorption of organic solvents (up to 50 wt%) together with the potential membrane disintegration in organic solvents can negatively affect the overall stability of membranes. [ 29,35–39 ] Thus, efforts have been exerted to use tough glassy polymers that are composed of condensed aromatic rings (e.g., polybenzimidazoles, [ 40–42 ] polyacrylates, [ 43 ] polymers of intrinsic microporosity, [ 44–47 ] and perfluorinated polymers [ 48 ] ) to fabricate membranes. Nevertheless, the inherent limitations of polymeric membranes, such as plasticization, [ 46,49 ] physical aging, [ 50,51 ] and the tradeoff relationship between permeance and rejection, [ 29,43 ] remain highly challenging in the application of polymeric membranes in OSN processes.…”

Section: Introductionmentioning

confidence: 99%

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Nie

Chuah

Bae

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

Owing to the increasing need to mitigate excessive organic solvent waste, the efficient separation and recovery of organic solvents have received major research attention in recent years. The membrane‐based organic solvent nanofiltration (OSN) process has demonstrated its feasibility in addressing this problem with low energy costs, compared to conventional separation techniques, such as adsorption, liquid–liquid extraction, and solvent evaporation. Recently, membranes made of 2D graphene‐based materials have shown great promise because they attain high solvent flux and solute rejection using easy processing methods. Thus, this paper focuses on state‐of‐the‐art studies of graphene‐based membranes used in OSN processes, which include syntheses, characterizations, performance evaluations, membrane fouling, and simulation studies, in combination with the development of the “upper‐bound” line to indicate the performance of graphene‐based membranes. In this paper, critical challenges involved in the development of graphene‐based membranes are also focused on and discussed to map out the future directions of these membranes in industrial OSN processes. In addition to OSN, this paper pertains to a broader audience in other separation processes, particularly in the fields of gas separation and water treatment.

show abstract

Performance of a composite membrane of a perfluorodioxole copolymer in organic solvent nanofiltration

Cited by 29 publications

References 34 publications

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Impact of Organic Solvents on Physicochemical Properties of Nanofiltration and Reverse‐Osmosis Membranes

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Contact Info

Product

Resources

About