Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO2-Plasticization Resistance for Thin Film Gas Separation Membranes

Ali Pournaghshband Isfahani; Morteza Sadeghi; Kazuki Wakimoto; Binod Babu Shrestha; Rouhollah Bagheri; Easan Sivaniah; Behnam Ghalei

doi:10.1021/acsami.7b18475

Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO₂-Plasticization Resistance for Thin Film Gas Separation Membranes

Ali Pournaghshband Isfahani
, Morteza Sadeghi
, Kazuki Wakimoto
, Binod Babu Shrestha
, Rouhollah Bagheri
, Easan Sivaniah
, Behnam Ghalei

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

49 Scopus citations

Abstract

The development of thin film composite (TFC) membranes offers an opportunity to achieve the permeability/selectivity requirements for optimum CO₂ separation performance. However, the durability and performance of thin film gas separation membranes are mostly challenged by weak mechanical properties and high CO₂ plasticization. Here, we designed new polyurethane (PU) structures with bulky aromatic chain extenders that afford preferred mechanical properties for ultra-thin-film formation. An improvement of about 1500% in Young's modulus and 600% in hardness was observed for pentiptycene-based PUs compared to the typical PU membranes. Single (CO₂, H₂, CH₄, and N₂) and mixed (CO₂/N₂ and CO₂/CH₄) gas permeability tests were performed on the PU membranes. The resulting TFC membranes showed a high CO₂ permeance up to 1400 GPU (10^-6 cm³(STP) cm^-2 s^-1 cmHg^-1) and the CO₂/N₂ and CO₂/H₂ selectivities of about 22 and 2.1, respectively. The enhanced mechanical properties of pentiptycene-based PUs result in high-performance thin membranes with the similar selectivity of the bulk polymer. The thin film membranes prepared from pentiptycene-based PUs also showed a twofold enhanced plasticization resistance compared to non-pentiptycene-containing PU membranes.

Original language	English (US)
Pages (from-to)	17366-17374
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	20
DOIs	https://doi.org/10.1021/acsami.7b18475
State	Published - May 23 2018
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science

Keywords

CO capture
CO induced plasticization
gas separation membranes
pentiptycene
polyurethane
thin film composite

Access to Document

10.1021/acsami.7b18475

Cite this

@article{c747489680e44e4d8cc8868da7a756f6,

title = "Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO2-Plasticization Resistance for Thin Film Gas Separation Membranes",

abstract = "The development of thin film composite (TFC) membranes offers an opportunity to achieve the permeability/selectivity requirements for optimum CO2 separation performance. However, the durability and performance of thin film gas separation membranes are mostly challenged by weak mechanical properties and high CO2 plasticization. Here, we designed new polyurethane (PU) structures with bulky aromatic chain extenders that afford preferred mechanical properties for ultra-thin-film formation. An improvement of about 1500\% in Young's modulus and 600\% in hardness was observed for pentiptycene-based PUs compared to the typical PU membranes. Single (CO2, H2, CH4, and N2) and mixed (CO2/N2 and CO2/CH4) gas permeability tests were performed on the PU membranes. The resulting TFC membranes showed a high CO2 permeance up to 1400 GPU (10-6 cm3(STP) cm-2 s-1 cmHg-1) and the CO2/N2 and CO2/H2 selectivities of about 22 and 2.1, respectively. The enhanced mechanical properties of pentiptycene-based PUs result in high-performance thin membranes with the similar selectivity of the bulk polymer. The thin film membranes prepared from pentiptycene-based PUs also showed a twofold enhanced plasticization resistance compared to non-pentiptycene-containing PU membranes.",

keywords = "CO capture, CO induced plasticization, gas separation membranes, pentiptycene, polyurethane, thin film composite",

author = "\{Pournaghshband Isfahani\}, Ali and Morteza Sadeghi and Kazuki Wakimoto and Shrestha, \{Binod Babu\} and Rouhollah Bagheri and Easan Sivaniah and Behnam Ghalei",

note = "Publisher Copyright: Copyright {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = may,

day = "23",

doi = "10.1021/acsami.7b18475",

language = "English (US)",

volume = "10",

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Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO₂-Plasticization Resistance for Thin Film Gas Separation Membranes. / Pournaghshband Isfahani, Ali; Sadeghi, Morteza; Wakimoto, Kazuki et al.
In: ACS Applied Materials and Interfaces, Vol. 10, No. 20, 23.05.2018, p. 17366-17374.

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

TY - JOUR

T1 - Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO2-Plasticization Resistance for Thin Film Gas Separation Membranes

AU - Pournaghshband Isfahani, Ali

AU - Sadeghi, Morteza

AU - Wakimoto, Kazuki

AU - Shrestha, Binod Babu

AU - Bagheri, Rouhollah

AU - Sivaniah, Easan

AU - Ghalei, Behnam

PY - 2018/5/23

Y1 - 2018/5/23

N2 - The development of thin film composite (TFC) membranes offers an opportunity to achieve the permeability/selectivity requirements for optimum CO2 separation performance. However, the durability and performance of thin film gas separation membranes are mostly challenged by weak mechanical properties and high CO2 plasticization. Here, we designed new polyurethane (PU) structures with bulky aromatic chain extenders that afford preferred mechanical properties for ultra-thin-film formation. An improvement of about 1500% in Young's modulus and 600% in hardness was observed for pentiptycene-based PUs compared to the typical PU membranes. Single (CO2, H2, CH4, and N2) and mixed (CO2/N2 and CO2/CH4) gas permeability tests were performed on the PU membranes. The resulting TFC membranes showed a high CO2 permeance up to 1400 GPU (10-6 cm3(STP) cm-2 s-1 cmHg-1) and the CO2/N2 and CO2/H2 selectivities of about 22 and 2.1, respectively. The enhanced mechanical properties of pentiptycene-based PUs result in high-performance thin membranes with the similar selectivity of the bulk polymer. The thin film membranes prepared from pentiptycene-based PUs also showed a twofold enhanced plasticization resistance compared to non-pentiptycene-containing PU membranes.

AB - The development of thin film composite (TFC) membranes offers an opportunity to achieve the permeability/selectivity requirements for optimum CO2 separation performance. However, the durability and performance of thin film gas separation membranes are mostly challenged by weak mechanical properties and high CO2 plasticization. Here, we designed new polyurethane (PU) structures with bulky aromatic chain extenders that afford preferred mechanical properties for ultra-thin-film formation. An improvement of about 1500% in Young's modulus and 600% in hardness was observed for pentiptycene-based PUs compared to the typical PU membranes. Single (CO2, H2, CH4, and N2) and mixed (CO2/N2 and CO2/CH4) gas permeability tests were performed on the PU membranes. The resulting TFC membranes showed a high CO2 permeance up to 1400 GPU (10-6 cm3(STP) cm-2 s-1 cmHg-1) and the CO2/N2 and CO2/H2 selectivities of about 22 and 2.1, respectively. The enhanced mechanical properties of pentiptycene-based PUs result in high-performance thin membranes with the similar selectivity of the bulk polymer. The thin film membranes prepared from pentiptycene-based PUs also showed a twofold enhanced plasticization resistance compared to non-pentiptycene-containing PU membranes.

KW - CO capture

KW - CO induced plasticization

KW - gas separation membranes

KW - pentiptycene

KW - polyurethane

KW - thin film composite

UR - https://www.scopus.com/pages/publications/85046536122

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U2 - 10.1021/acsami.7b18475

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EP - 17374

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 20

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