High dehumidification performance of amorphous cellulose composite membranes prepared from trimethylsilyl cellulose

Puspasari, Tiara; Akhtar, Faheem Hassan; Ogieglo, Wojciech; Alharbi, Ohoud; Peinemann, Klaus‐Viktor

doi:10.1039/c8ta00350e

Cited by 30 publications

(13 citation statements)

References 47 publications

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“…Various organic, inorganic and mixed matrix membranes have been explored in dehumidification applications like flue gas dehydration, compressed air drying, dehydration of organic compounds, and dehumidification before the HVAC systems [3,[11][12][13][14][15][16][17]. Polymeric membranes manufactured from both rubbery and glassy polymers have high water vapor permeability and selectivity for vapors [3,4,15,[18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Highways for water molecules: Interplay between nanostructure and water vapor transport in block copolymer membranes

Akhtar

Vovushua

Villalobos

et al. 2019

Journal of Membrane Science

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Water vapor removal is a crucial process for several industries (e.g., air conditioning systems, flue gas dehydration, compressed air drying etc.). An effective dehumidification has the potential to drastically reduce the energy consumption and the overall cost of a process stream.Membranes with high water permeance and selectivity are promising candidates to achieve an energy-efficient water removal. We propose self-assembled membranes with interconnected and ordered hydrophilic domains that act as extremely fast water transport highways (water channels). We used a commercial amphiphilic pentablock copolymer (Nexar™), which has the ability to form long-range, self-ordering nanoscale morphologies with rigid end-blocks and a 2 flexible molecular network where polar and non-polar solvents regulated the final morphologies of the membranes are systematically investigated. Our results demonstrate how well-defined periodic morphology allow for molecular level control in effective removal of water vapor. The membranes with ordered hydrophilic nanochannels present a 6-fold improvement in water vapor permeability and a 14-fold increase in water vapor/N 2 selectivity compared to Nexar™ membranes with disordered domains.Molecular dynamics stimulations are carried out on the self-assembly behavior of block copolymer solution in different solvents. In addition, sorption and desorption kinetics studies for Nexar™ films were correlated to the different morphologies imaged by transmission electron, atomic force and environmental scanning electron microscopy.

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Section: Introductionmentioning

confidence: 99%

Highways for water molecules: Interplay between nanostructure and water vapor transport in block copolymer membranes

Akhtar

Vovushua

Villalobos

et al. 2019

Journal of Membrane Science

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“…S12, ESI †). 8,39 A combination of very high water vapor permeability and selectivity was achieved. These results demonstrated the potential of SPEEK-based membranes with tunable properties for gas dehydration applications such as dehumidication.…”

Section: Resultsmentioning

confidence: 99%

Defining sulfonation limits of poly(ether-ether-ketone) for energy-efficient dehumidification

et al. 2021

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“…On a different note, the Peinemann group published a series of papers on thin film membranes based on cellulose thin films (Puspasari et al, 2016, 2018a,b,c). They used either crosslinking (e.g., by glutaraldehyde) or blending with other materials (e.g., PEI or siloxanes) to achieve certain material characteristics, including zero salt rejection, enhanced dehumidification performance, more size and charge selectivity to mention but a few.…”

Section: Materials Applications Of Ultrathin Cellulose Filmsmentioning

confidence: 99%

Ultrathin Films of Cellulose: A Materials Perspective

Kontturi

Spirk

2019

Front. Chem.

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A literature review on ultrathin films of cellulose is presented. The review focuses on different deposition methods of the films—all the way from simple monocomponent films to more elaborate multicomponent structures—and the use of the film structures in the vast realm of materials science. The common approach of utilizing cellulose thin films as experimental models is therefore omitted. The reader will find that modern usage of cellulose thin films constitutes an exciting emerging area within materials science and it goes far beyond the traditional usage of the films as model systems.

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High dehumidification performance of amorphous cellulose composite membranes prepared from trimethylsilyl cellulose

Abstract: Composite membranes with a thin cellulose layer with outstanding flux and selectivity for water vapour are achieved via coating with trimethylsilyl cellulose.

Cited by 30 publications

References 47 publications

Highways for water molecules: Interplay between nanostructure and water vapor transport in block copolymer membranes

Highways for water molecules: Interplay between nanostructure and water vapor transport in block copolymer membranes

Defining sulfonation limits of poly(ether-ether-ketone) for energy-efficient dehumidification

Ultrathin Films of Cellulose: A Materials Perspective

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