Thin film composite membranes from polymers of intrinsic microporosity using layer-by-layer method

Agarwal, Praveen; Tomlinson, Ian A.; Hefner, Robert E.; Ge, Shouren; Rao, YuanQiao; Dikic, T Tamara

doi:10.1016/j.memsci.2018.11.028

Cited by 25 publications

(6 citation statements)

References 15 publications

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“…[ 191 ] Agarwal et al (2019) prepared TFC membranes by a layer‐by‐layer method using a TB‐derived polymer and reported a water permeance of 5.6 LMH bar −1 with a PEG‐based molecular weight cutoff (MWCO) of > 400 g mol −1 . [ 192 ] Recently, Thompson et al (2020) prepared spirobifluorene–aryldiamine‐based membranes for organic nanofiltration of hydrocarbons and demonstrated significantly improved rejection of 1,3,5‐triisopropylbenzene from toluene using such polymers (rejection of ≈40–80%) compared to PIM‐1 (rejection of ≈10%). [ 193 ] Ma et al (2019) used PIM‐1 as a precursor to produce microporous CMS membranes and demonstrated strong chemical stability and high separation performance for the challenging separation of xylene isomers.…”

Section: Pim‐derived Membranes For Liquid Separations By Nanofiltration/romentioning

confidence: 99%

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

et al. 2021

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Solution‐processable amorphous glassy polymers of intrinsic microporosity (PIMs) are promising microporous organic materials for membrane‐based gas and liquid separations due to their high surface area and internal free volume, thermal and chemical stability, and excellent separation performance. This review provides an overview of the most recent developments in the design and transport properties of novel ladder PIM materials, polyimides of intrinsic microporosity (PIM–PIs), functionalized PIMs and PIM–PIs, PIM‐derived thermally rearranged (TR), and carbon molecular sieve (CMS) membrane materials as well as PIM‐based thin film composite membranes for a wide range of energy‐intensive gas and liquid separations. In less than two decades, PIMs have significantly lifted the performance upper bounds in H2/N2, H2/CH4, O2/N2, CO2/N2, and CO2/CH4 separations. However, PIMs are still limited by their insufficient gas‐pair selectivity to be considered as promising materials for challenging industrial separations such as olefin/paraffin separations. An optimum pore size distribution is required to further improve the selectivity of a PIM for a given application. Specific attention is given to the potential use of PIM‐based CMS membranes for energy‐intensive CO2/CH4, N2/CH4, C2H4/C2H6, and C3H6/C3H8 separations, and thin film composite membranes containing PIM motifs for liquid separations.

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Section: Pim‐derived Membranes For Liquid Separations By Nanofiltration/romentioning

confidence: 99%

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

et al. 2021

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“…Due to their high gas and vapor permeability, Tröger's base polymers of intrinsic microporosity (PIMs) are receiving increasing attention for applications such as polymer molecular sieve membranes . Their microporous properties are imparted by a rigid polymer backbone that consists of a repeating methanodiazocine core (Scheme ) . Applications of these materials are presently broadening with the novel development of side‐chain‐modified PIMs, along with the addition of molecular crosslinking agents .…”

Section: Introductionmentioning

confidence: 99%

“…Their microporous properties are imparted by a rigid polymer backbone that consists of a repeating methanodiazocine core (Scheme ) . Applications of these materials are presently broadening with the novel development of side‐chain‐modified PIMs, along with the addition of molecular crosslinking agents . Surprisingly, the published literature concerning Tröger's base PIMs is devoid of any detailed microstructural characterization information on these materials.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a hydroxy‐functional Tröger's base (TBOH) polymer quaternized with methyl iodide (Q‐TBOH), with the addition of 4,4′‐diazido‐2,2′‐stilbenedisulfonic acid disodium salt tetrahydrate as the crosslinker for UV cure, was reported as a new nanofiltration membrane PIM product . As previously noted, characterization of these materials using conventional methods of analysis (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of microstructures and reaction mechanisms of Tröger's base polymers of intrinsic microporosity

Gies

Hefner

Rau

et al. 2020

Rapid Comm Mass Spectrometry

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Rationale Tröger's base polymers of intrinsic microporosity (PIMs) are receiving increasing attention for applications such as polymer molecular sieve membranes. Development of novel membrane materials requires microstructure analysis in order to overcome processing and applications challenges. This study aims to address these challenges and overcome some of the solubility/aggregation issues that hinder the analysis of these materials. Methods A combination of matrix‐assisted laser desorption/ionization mass spectrometry and collision‐induced dissociation was used to examine the reaction products of unfunctionalized Tröger's base PIMs. Results Enhanced data mining, using ultrahigh‐resolution mass spectrometry and statistical analysis, yielded a wealth of information on the molecular mass, chemical connectivity, and end groups of species generated during synthesis. Modifications of interest include N‐methyl, N‐methanimine, N‐formyl, and N‐methylol end‐capping moieties, as well as incomplete backbone methanodiazocine rings with missing bridging methylene linkages. Most importantly, a general fragmentation mechanism, supported by computational modeling, was developed to assist in the rapid identification of main‐chain and end‐group modifications in Tröger's base PIMs. Conclusions Unfunctionalized Tröger's base polymers were selected as a model system, to thoroughly study their end‐group modification chemistry. This model system could then be used to gain insights into complex hydroxy‐functional PIM materials.

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“…[19,20] LbL deposition offers ease of processing, environmental friendliness, and the ability to precisely control film properties. These PEM coatings have been widely exploited for applications such as gas barrier and gas separation, [21][22][23] energy storage and conversion, [24,25] bio-sensors, [26][27][28] antimicrobial coatings, [29] actuators, [30][31][32] and anti-corrosion. [33,34] Despite exhibiting outstanding oxygen barrier, [35] PEM coatings alone exhibit very limited moisture barrier as a result of loosened chain packing and higher chain mobility in humid conditions.…”

mentioning

confidence: 99%

High Moisture Barrier with Synergistic Combination of SiO_x and Polyelectrolyte Nanolayers

Qin¹,

Xiang²,

Eberle³

et al. 2019

Adv Materials Inter

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The lifespan of most organic electronics, and many types of food, depend on the oxygen and moisture barrier of the packaging materials. Despite exhibiting excellent oxygen barrier and being relatively easy to produce, polyelectrolyte multilayer nanocoatings (PEM) show limited moisture barrier. SiO x thin films can exhibit good moisture barrier, but rigidity that leads to cracking is a Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Thin film composite membranes from polymers of intrinsic microporosity using layer-by-layer method

Cited by 25 publications

References 15 publications

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

Characterization of microstructures and reaction mechanisms of Tröger's base polymers of intrinsic microporosity

High Moisture Barrier with Synergistic Combination of SiO_x and Polyelectrolyte Nanolayers

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Thin film composite membranes from polymers of intrinsic microporosity using layer-by-layer method

Cited by 25 publications

References 15 publications

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

Characterization of microstructures and reaction mechanisms of Tröger's base polymers of intrinsic microporosity

High Moisture Barrier with Synergistic Combination of SiOx and Polyelectrolyte Nanolayers

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High Moisture Barrier with Synergistic Combination of SiO_x and Polyelectrolyte Nanolayers