Negligible ageing in poly(ether-ether-ketone) membranes widens application range for solvent processing

Burgal, João da Silva; Peeva, Ludmila; Livingston, Andrew G.

doi:10.1016/j.memsci.2016.10.015

Cited by 63 publications

(35 citation statements)

References 58 publications

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“…Recently, Livingston and co-workers reported negligible aging in poly(ether ether ketone) (PEEK) membranes for OSN (Da Silva Burgal et al, 2015 , 2017 ). PEEK is a fully aromatic, semi-crystalline polymer made by hydroquinone and benzophenone segments.…”

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

“…Physical aging of bulky membranes (10–50 μm) typically used in the academia is a slow process and its effects do not show up within experimentally accessible timescales (Galizia et al, 2017a ). To accelerate physical aging, Da Silva Burgal annealed thick films made by PEEK, Lenzing P84 polyimide and polybenzimidazole at 120°C for 48 h (Da Silva Burgal et al, 2017 ). Polyimide and PBI samples became very brittle after thermal annealing, due to the accelerated free volume relaxation, which reduced polymer chain mobility.…”

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

“…In contrast, PEEK didn't show any brittleness and its Young's modulus increased from 61 MPa to 108 MPa after annealing at 120°C. The unusual stability exhibited by PEEK is likely due to the presence of ultra-rigid crystalline domains, which freeze polymer chains in the amorphous domain in their original position (Da Silva Burgal et al, 2017 ).…”

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

“…Figure 3 ). This result was justified by invoking negligible aging in PEEK (Da Silva Burgal et al, 2017 ).…”

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

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%

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

Galizia

Bye

2018

Front. Chem.

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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.

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Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

“…Figure 3 ). This result was justified by invoking negligible aging in PEEK (Da Silva Burgal et al, 2017 ).…”

Section: Transport Phenomena Is Osn Membranes: Mechanism and Challengmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Galizia

Bye

2018

Front. Chem.

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Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Nie

Chuah

Bae

et al. 2020

Adv Funct Materials

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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.

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Large‐Area Soluble Covalent Organic Framework Oligomer Coating for Organic Solution Nanofiltration Membranes

Yu,

Guan,

Chen

et al. 2023

Small

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Covalent organic frameworks (COFs) are a family of engaging membrane materials for molecular separation, which remain challenging to fabricate in the form of thin‐film composite membranes due to slow crystal growth and insoluble powder. Here, an additive approach is presented to construct COF‐based thin‐film composite membranes in 10 min via COF oligomer coating onto poly(ether ether ketone) (PEEK）ultrafiltration membranes. By the virtue of ultra‐thin liquid phase and liquid‐solid interface‐confined assembly, the COF oligomers are fast stacked up and grow along the interface with the solvent evaporation. Benefiting from the low out‐plane resistance of COFs, COF@PEEK composite membranes exhibit high solvent permeances in a negative correlation with solvent viscosity. The well‐defined pore structures enable high molecular sieving ability (Mw = 300 g mol−1). Besides, the COF@PEEK composite membranes possess excellent mechanical integrities and steadily operate for over 150 h in the condition of high‐pressure cross flow. This work not only exemplifies the high‐efficiency and scale‐up preparation of COF‐based thin‐film composite membranes but also provides a new strategy for COF membrane processing.

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Negligible ageing in poly(ether-ether-ketone) membranes widens application range for solvent processing

Cited by 63 publications

References 58 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

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Large‐Area Soluble Covalent Organic Framework Oligomer Coating for Organic Solution Nanofiltration Membranes

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