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Tunable gas selectivity of cellulose nanocrystals – Polyethylene glycol composite membranes.

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Title: Tunable gas selectivity of cellulose nanocrystals – Polyethylene glycol composite membranes.
Authors: Checchetto, R.1 (AUTHOR) riccardo.checchetto@unitn.it, Facchinelli, T.1 (AUTHOR), Cantalini, G.1 (AUTHOR), Scarpa, M.1 (AUTHOR)
Source: International Journal of Hydrogen Energy. Feb2024, Vol. 57, p688-695. 8p.
Subjects: Cellulose nanocrystals, Composite membranes (Chemistry), Carbon dioxide, Ethylene glycol, Gases, Polyethylene glycol, Polymersomes
Abstract: The kinetics of the CO 2 , D 2 and CH 4 transport through self-supporting cellulose nanocrystals (CNCs) films containing low-molecular weight poly(ethylene glycol) (PEG) additive as plasticizer agent was studied in single gas condition at 293 K and sub-atmospheric feed pressure. Neat CNC and PEG-CNC with 7 wt % PEG films act as impermeable barrier for CO 2 and CH 4 and exhibit D 2 permeability values not larger than 0.05 barrer with penetrant diffusivity in the 10−10 cm2/s range. PEG addition at larger contents improves the permeability and diffusivity of all penetrant gases and gives to the PEG-CNC membrane a CO 2 selective character. The CO 2 permeability and ideal CO 2 /D 2 selectivity of the PEG-CNC films are 0.42 ± 0.04 barrer and ∼3, respectively, at 14 wt % PEG content, 2.5 ± 0.2 barrer and ∼5 at 21 wt % PEG. The preferred CO 2 transport exhibits a solution-selective character being the D 2 diffusivity a factor ∼10 larger than the CO 2 diffusivity. PEG addition, on the contrary, does not change the D 2 selective character for the D 2 /CH 4 gas couple. PEG well mixed with the gas-impermeable CNCs increases the PEG-CNC free volume and preferentially improves the CO 2 solubility given the specific interactions between the quadrupolar CO 2 penetrant and the dipolar ether groups of the PEG additive. [Display omitted] • Tuning the gas transport rates and selectivity of CNC- based membranes. • Tuning by adding selected amounts of PEG plasticizer. • Neat CNCs membrane acts as CO 2 barrier for the D 2 /CO 2 gas couple. • CNCs membrane with 21 wt % PEG acts as CO 2 selective membrane. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 175546215
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PubTypeId: academicJournal
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  Label: Title
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  Data: Tunable gas selectivity of cellulose nanocrystals – Polyethylene glycol composite membranes.
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  Data: <searchLink fieldCode="AR" term="%22Checchetto%2C+R%2E%22">Checchetto, R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> riccardo.checchetto@unitn.it</i><br /><searchLink fieldCode="AR" term="%22Facchinelli%2C+T%2E%22">Facchinelli, T.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cantalini%2C+G%2E%22">Cantalini, G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Scarpa%2C+M%2E%22">Scarpa, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Feb2024, Vol. 57, p688-695. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Cellulose+nanocrystals%22">Cellulose nanocrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+membranes+%28Chemistry%29%22">Composite membranes (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink><br /><searchLink fieldCode="DE" term="%22Gases%22">Gases</searchLink><br /><searchLink fieldCode="DE" term="%22Polyethylene+glycol%22">Polyethylene glycol</searchLink><br /><searchLink fieldCode="DE" term="%22Polymersomes%22">Polymersomes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The kinetics of the CO 2 , D 2 and CH 4 transport through self-supporting cellulose nanocrystals (CNCs) films containing low-molecular weight poly(ethylene glycol) (PEG) additive as plasticizer agent was studied in single gas condition at 293 K and sub-atmospheric feed pressure. Neat CNC and PEG-CNC with 7 wt % PEG films act as impermeable barrier for CO 2 and CH 4 and exhibit D 2 permeability values not larger than 0.05 barrer with penetrant diffusivity in the 10−10 cm2/s range. PEG addition at larger contents improves the permeability and diffusivity of all penetrant gases and gives to the PEG-CNC membrane a CO 2 selective character. The CO 2 permeability and ideal CO 2 /D 2 selectivity of the PEG-CNC films are 0.42 ± 0.04 barrer and ∼3, respectively, at 14 wt % PEG content, 2.5 ± 0.2 barrer and ∼5 at 21 wt % PEG. The preferred CO 2 transport exhibits a solution-selective character being the D 2 diffusivity a factor ∼10 larger than the CO 2 diffusivity. PEG addition, on the contrary, does not change the D 2 selective character for the D 2 /CH 4 gas couple. PEG well mixed with the gas-impermeable CNCs increases the PEG-CNC free volume and preferentially improves the CO 2 solubility given the specific interactions between the quadrupolar CO 2 penetrant and the dipolar ether groups of the PEG additive. [Display omitted] • Tuning the gas transport rates and selectivity of CNC- based membranes. • Tuning by adding selected amounts of PEG plasticizer. • Neat CNCs membrane acts as CO 2 barrier for the D 2 /CO 2 gas couple. • CNCs membrane with 21 wt % PEG acts as CO 2 selective membrane. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijhydene.2024.01.024
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 688
    Subjects:
      – SubjectFull: Cellulose nanocrystals
        Type: general
      – SubjectFull: Composite membranes (Chemistry)
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Ethylene glycol
        Type: general
      – SubjectFull: Gases
        Type: general
      – SubjectFull: Polyethylene glycol
        Type: general
      – SubjectFull: Polymersomes
        Type: general
    Titles:
      – TitleFull: Tunable gas selectivity of cellulose nanocrystals – Polyethylene glycol composite membranes.
        Type: main
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            NameFull: Checchetto, R.
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            NameFull: Facchinelli, T.
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            NameFull: Cantalini, G.
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            NameFull: Scarpa, M.
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            – D: 29
              M: 02
              Text: Feb2024
              Type: published
              Y: 2024
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              Value: 57
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            – TitleFull: International Journal of Hydrogen Energy
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