Defect-free PIM-1 hollow fiber membranes

Jue, Melinda L.; Breedveld, Victor; Lively, Ryan P.

doi:10.1016/j.memsci.2017.02.012

Cited by 102 publications

(99 citation statements)

References 48 publications

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“…Matrimid® and Ultem were blended with PIM-1 to prepare polymer blend hollow fibers membranes [96,97]. Neat PIM-1 hollow fiber membranes were also fabricated [98]. Gas separation properties of PIM-1 related membranes and membranes from other polymers are compared in Table 5.…”

Section: Pims Hollow Fiber Membranesmentioning

confidence: 99%

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Polymers of Intrinsic Microporosity (PIMs) Gas Separation Membranes: A mini Review

Ma¹,

Urban²

2018

Proc. Nat. Res. Soc.

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Polymers of Intrinsic Microporosity (PIMs) are broadly recognized as a potential next generation membrane material for gas separations due to their ultra-permeable characteristics. This mini review aims to provide an overview of these materials and capture its very essence, from chemistry to applications. PIMs-based gas separation membranes are divided into three main categories, i.e., neat PIMs, polymer blend PIMs, and mixed matrix PIMs membranes. This review covers a wide spectrum of PIMs with their gas diffusion mechanisms and separation performance, all of which are examined in detail. Core challenges and opportunities of PIMs membrane technology are reviewed, and this article concludes with future perspectives on PIMs. This mini review establishes a comprehensive understanding of the key technological competence and barriers of PIMs for next-generation gas separations membranes. S ignificant advances in the science and engineering of membrane materials and separation processes have been witnessed in recent decades. Membranes have demonstrated the capability of reducing the enormous amount of energy consumption for gas separations, compared to conventional thermally driven separation processes, like cryogenic distillation [1]. Indeed, membrane separation process is cost-effective and environmentally friendly with small physical footprints. Interests of membrane technology have been growing increasingly in past decades. Key areas that membranes are at play include CO 2 capture, nitrogen generation, hydrogen/helium recovery, natural gas sequestration and biogas purification [2]. Regarded as a new family of membrane materials, Polymers of Intrinsic microporosity (PIMs) have exhibited extremely high gas separation productivity and drawn extensive attention world-widely. The intrinsic microporosity leverages PIMs membranes to far exceed the Robeson upper bound limit of polymeric membranes, which opens an entirely new avenue for gas separations [3]. This review addresses the key developments and advances of PIMs as a super-permeable membrane material for gas separations. Specifically, this paper presents a comprehensive overview of three imperative types of PIMs membranes: those made from, respectively, neat PIMs, polymer blend PIMs, and mixed matrix PIMs.

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Section: Pims Hollow Fiber Membranesmentioning

confidence: 99%

“…For example, PIM-1 was dissolved in THF and spun into hollow fiber membranes [98]. However, PIM-1 is insoluble in some polar solvents, such as N-methylpyrrolidone (NMP), dimethylacetamide (DMAc) and dimethylformamide (DMF) [107].…”

Section: Processabilitymentioning

confidence: 99%

Polymers of Intrinsic Microporosity (PIMs) Gas Separation Membranes: A mini Review

Ma¹,

Urban²

2018

Proc. Nat. Res. Soc.

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“…Due to inefficient packing of the rigid, contorted backbones, PIM‐1 possesses microporosity and exhibits promising performance in adsorptive and membrane gas separations and heterogeneous catalysis applications . However, existing research on PIM‐1 is limited to simple structures, such as powders, films, and fibers . Inspired by the fundamental principles that enable hollow fiber membrane spinning, we developed a solution‐based 3D printing technique capable of manufacturing more complex structures with hierarchical porosity .…”

Section: Introductionmentioning

confidence: 99%

“…However, existing research on PIM‐1 is limited to simple structures, such as powders, films, and fibers . Inspired by the fundamental principles that enable hollow fiber membrane spinning, we developed a solution‐based 3D printing technique capable of manufacturing more complex structures with hierarchical porosity . Indeed, development of complex structures (i.e., beyond hollow fiber bundles) for mass transfer applications is of great practical interest.…”

Section: Introductionmentioning

confidence: 99%

“…Critically, a binary polymer solution yields a dense microstructure within the filament, which is nonideal for most mass transfer applications, but is potentially useful in applications requiring mechanical strength . A ternary polymer solution (i.e., polymer, solvent, and nonsolvent), in contrast, was found to produce a micro‐/meso‐/macroporous structure as a result of spinodal decomposition of the ink and the intrinsic microporosity of the polymer in the case of PIM‐1 . Finally, the printed structure undergoes room‐temperature drying and nonsolvent washing to remove residual printing solvent.…”

Section: Introductionmentioning

confidence: 99%

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Solution‐Based 3D Printing of Polymers of Intrinsic Microporosity

Zhang

Liao

et al. 2018

Macromol. Rapid Commun.

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Current additive manufacturing methods have significant limitations in the classes of compatible polymers. Many polymers of significant technological interest cannot currently be 3D printed. Here, a generalizable method for 3D printing of viscous tenary polymer solutions (polymer/solvent/nonsolvent) is applied to both "intrinsically porous" (a polymer of intrinsic microporosity, PIM-1) and "intrinsically nonporous" (cellulose acetate) polymers. Successful ternary ink formulations require balancing of solution thermodynamics (phase separation), mass transfer (solvent evaporation), and rheology. As a demonstration, a microporous polymer (PIM-1) incompatible with current additive manufacturing technologies is 3D printed into a high-efficiency mass transfer contactor exhibiting hierarchical porosity ranging from sub-nanometer to millimeter pores. Short contactors (1.27 cm) can fully purify (<1 ppm) toluene vapor (1000 ppm) in N gas for 1.7 h, which is six times longer than PIM-1 in traditional structures, and more than 4000 times the residence time of gas in the contactor. This solution-based additive manufacturing approach greatly extends the range of 3D-printable materials.

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Ultrapermeable Polymers of Intrinsic Microporosity Containing Spirocyclic Units with Fused Triptycenes

Bezzu

Fuoco

Esposito

et al. 2021

Adv Funct Materials

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Polymers of intrinsic microporosity (PIMs), such as the archetypal spirobisindane‐based PIM‐1, are among the most promising new materials for making gas separation membranes with high permeance for potential use in high‐throughput applications. Here it is shown that ultrapermeable PIMs can be prepared by fusing rigid and bulky triptycene (Trip) to the spirobisindane (SBI) unit. PIM‐SBI‐Trip and its copolymer with PIM‐1 (PIM‐1/SBI‐Trip) are both ultrapermeable after methanol treatment (PCO2 > 20 000 Barrer). Old films, although less permeable, are more selective and therefore provide data that are close to the recently redefined Robeson upper bounds for the important CO2/CH4, CO2/N2, and O2/N2 gas pairs. Temperature‐dependent permeation measurements and analysis of the entropic and energetic contributions of the gas transport parameters show that the enhanced performance of these polymers is governed by strong size‐sieving character, mainly due to the energetic term of the diffusivity, and related to their high rigidity. Both polymers show a relatively weak pressure‐dependence in mixed gas permeability experiments up to 6 bar, suggesting a potential use for CO2 capture from flue gas or for the upgrading of biogas.

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Defect-free PIM-1 hollow fiber membranes

Cited by 102 publications

References 48 publications

Polymers of Intrinsic Microporosity (PIMs) Gas Separation Membranes: A mini Review

Polymers of Intrinsic Microporosity (PIMs) Gas Separation Membranes: A mini Review

Solution‐Based 3D Printing of Polymers of Intrinsic Microporosity

Ultrapermeable Polymers of Intrinsic Microporosity Containing Spirocyclic Units with Fused Triptycenes

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