Improvement in the CO2 Permeation Properties of High-Molecular-Weight Poly(ethylene oxide): Use of Amine-Branched Poly(amidoamine) Dendrimer

Jae Hun Lee; Jung Yup Lim; Min Su Park; Jong Hak Kim

doi:10.1021/acs.macromol.8b02037

Improvement in the CO₂ Permeation Properties of High-Molecular-Weight Poly(ethylene oxide): Use of Amine-Branched Poly(amidoamine) Dendrimer

Jae Hun Lee, Jung Yup Lim, Min Su Park, Jong Hak Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

High-molecular-weight (e.g., 1000000 g mol^-1) poly(ethylene oxide) (PEO) is a candidate polymer for CO₂ separation membranes because of its low cost and high CO₂ affinity. However, high-molecular-weight PEO membranes contain large crystallites, which cause structural defects. Here, we report defect-free, high-molecular-weight PEO membranes with good CO₂ separation performance prepared using amine-branched poly(amidoamine) (PAMAM) dendrimers. PAMAM, obtained by two-step addition polymerization, acts as a filler in the all-polymer membranes. The intermolecular hydrogen bonding between the PEO and filler yields transparent, uniform membranes with improved mechanical strength. The primary amines in PAMAM facilitate CO₂ transport by increasing CO₂ solubility in the membrane. The PEO/PAMAM membranes show ∼6 times greater CO₂/N₂ selectivity than that of neat PEO. The PEO/PAMAM membrane with 2.5 wt % PAMAM loading has a CO₂ permeability of 32.3 barrer and a CO₂/N₂ selectivity of 42, representing the best gas separation performance of free-standing high-molecular-weight PEO-based membranes to date.

Original language	English
Pages (from-to)	8800-8807
Number of pages	8
Journal	Macromolecules
Volume	51
Issue number	21
DOIs	https://doi.org/10.1021/acs.macromol.8b02037
Publication status	Published - 2018 Nov 13

Bibliographical note

Funding Information:
*(J.H.K.) Tel +82 2 2123 5757; Fax +82 2 312 6401; e-mail jonghak@yonsei.ac.kr. ORCID Jong Hak Kim: 0000-0002-5858-1747 Funding This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535). Notes The authors declare no competing financial interest.

Funding Information:
This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535).

Publisher Copyright:
© 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1021/acs.macromol.8b02037

Cite this

@article{e6adcd7c17a5453f8896f614440e36dd,

title = "Improvement in the CO2 Permeation Properties of High-Molecular-Weight Poly(ethylene oxide): Use of Amine-Branched Poly(amidoamine) Dendrimer",

abstract = "High-molecular-weight (e.g., 1000000 g mol-1) poly(ethylene oxide) (PEO) is a candidate polymer for CO2 separation membranes because of its low cost and high CO2 affinity. However, high-molecular-weight PEO membranes contain large crystallites, which cause structural defects. Here, we report defect-free, high-molecular-weight PEO membranes with good CO2 separation performance prepared using amine-branched poly(amidoamine) (PAMAM) dendrimers. PAMAM, obtained by two-step addition polymerization, acts as a filler in the all-polymer membranes. The intermolecular hydrogen bonding between the PEO and filler yields transparent, uniform membranes with improved mechanical strength. The primary amines in PAMAM facilitate CO2 transport by increasing CO2 solubility in the membrane. The PEO/PAMAM membranes show ∼6 times greater CO2/N2 selectivity than that of neat PEO. The PEO/PAMAM membrane with 2.5 wt % PAMAM loading has a CO2 permeability of 32.3 barrer and a CO2/N2 selectivity of 42, representing the best gas separation performance of free-standing high-molecular-weight PEO-based membranes to date.",

author = "Lee, {Jae Hun} and Lim, {Jung Yup} and Park, {Min Su} and Kim, {Jong Hak}",

note = "Funding Information: *(J.H.K.) Tel +82 2 2123 5757; Fax +82 2 312 6401; e-mail jonghak@yonsei.ac.kr. ORCID Jong Hak Kim: 0000-0002-5858-1747 Funding This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535). Notes The authors declare no competing financial interest. Funding Information: This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535). Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = nov,

day = "13",

doi = "10.1021/acs.macromol.8b02037",

language = "English",

volume = "51",

pages = "8800--8807",

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T1 - Improvement in the CO2 Permeation Properties of High-Molecular-Weight Poly(ethylene oxide)

T2 - Use of Amine-Branched Poly(amidoamine) Dendrimer

AU - Lee, Jae Hun

AU - Lim, Jung Yup

AU - Park, Min Su

AU - Kim, Jong Hak

N1 - Funding Information: *(J.H.K.) Tel +82 2 2123 5757; Fax +82 2 312 6401; e-mail jonghak@yonsei.ac.kr. ORCID Jong Hak Kim: 0000-0002-5858-1747 Funding This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535). Notes The authors declare no competing financial interest. Funding Information: This work was financially supported by a grant from the National Research Foundation (NRF) of South Korea funded by the Ministry of Science, ICT, and Future Planning (NRF-2017M1A2A2043448, NRF-2017R1D1A1B06028030, NRF-2018M3A7B4071535). Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/11/13

Y1 - 2018/11/13

N2 - High-molecular-weight (e.g., 1000000 g mol-1) poly(ethylene oxide) (PEO) is a candidate polymer for CO2 separation membranes because of its low cost and high CO2 affinity. However, high-molecular-weight PEO membranes contain large crystallites, which cause structural defects. Here, we report defect-free, high-molecular-weight PEO membranes with good CO2 separation performance prepared using amine-branched poly(amidoamine) (PAMAM) dendrimers. PAMAM, obtained by two-step addition polymerization, acts as a filler in the all-polymer membranes. The intermolecular hydrogen bonding between the PEO and filler yields transparent, uniform membranes with improved mechanical strength. The primary amines in PAMAM facilitate CO2 transport by increasing CO2 solubility in the membrane. The PEO/PAMAM membranes show ∼6 times greater CO2/N2 selectivity than that of neat PEO. The PEO/PAMAM membrane with 2.5 wt % PAMAM loading has a CO2 permeability of 32.3 barrer and a CO2/N2 selectivity of 42, representing the best gas separation performance of free-standing high-molecular-weight PEO-based membranes to date.

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