Investigating microstructure evolution in block copolymer membranes
Block copolymer self-assembly in conjunction with nonsolvent-induced phase separation (SNIPS) has been increasingly leveraged to fabricate integral-asymmetric membranes. The large number of formulation and processing parameters associated with SNIPS, however, has prevented the reliable construction...
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| Veröffentlicht in: | The Journal of chemical physics 2024-02, Vol.160 (7) |
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| creator | Cooper, Anthony J. Grzetic, Douglas J. Delaney, Kris T. Fredrickson, Glenn H. |
| description | Block copolymer self-assembly in conjunction with nonsolvent-induced phase separation (SNIPS) has been increasingly leveraged to fabricate integral-asymmetric membranes. The large number of formulation and processing parameters associated with SNIPS, however, has prevented the reliable construction of high performance membranes. In this study, we apply dynamical self-consistent field theory to model the SNIPS process and investigate the effect of various parameters on the membrane morphology: solvent selectivity, nonsolvent selectivity, initial film composition, and glass transition composition. We examine how solvent selectivity and concentration of polymers in the film impact the structure of micelles that connect to form the membrane matrix. In particular, we find that preserving the order in the surface layer and forming a connection between the supporting and surface layer are nontrivial and sensitive to each parameter studied. The effect of each parameter is discussed, and suggestions are made for successfully fabricating viable block copolymer membranes. |
| doi_str_mv | 10.1063/5.0188196 |
| format | Article |
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The large number of formulation and processing parameters associated with SNIPS, however, has prevented the reliable construction of high performance membranes. In this study, we apply dynamical self-consistent field theory to model the SNIPS process and investigate the effect of various parameters on the membrane morphology: solvent selectivity, nonsolvent selectivity, initial film composition, and glass transition composition. We examine how solvent selectivity and concentration of polymers in the film impact the structure of micelles that connect to form the membrane matrix. In particular, we find that preserving the order in the surface layer and forming a connection between the supporting and surface layer are nontrivial and sensitive to each parameter studied. 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The effect of each parameter is discussed, and suggestions are made for successfully fabricating viable block copolymer membranes.</description><subject>Block copolymer</subject><subject>Block copolymers</subject><subject>Composition</subject><subject>Field theory</subject><subject>Glass transition</subject><subject>Glass transitions</subject><subject>Glassy dynamics</subject><subject>Mass transfer</subject><subject>MATERIALS SCIENCE</subject><subject>Mean field theory</subject><subject>Membrane technology</subject><subject>Membranes</subject><subject>Micelles</subject><subject>Parameter sensitivity</subject><subject>Phase separation</subject><subject>Polymers</subject><subject>Process parameters</subject><subject>Random phase approximation</subject><subject>Self consistent fields</subject><subject>Self-assembly</subject><subject>Solvents</subject><subject>Surface layers</subject><subject>Thermal fluctuations</subject><subject>Thin films</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp90DtPwzAUBWALgWgpDPwBFMECSCnXceLHiCpeUiUWmK3YccGQxMVOkPrvcUhhYGDy8un43IPQMYY5BkquijlgzrGgO2iKgYuUUQG7aAqQ4VRQoBN0EMIbAGCW5ftoQjjhwHI6RYuH9tOEzr6UnW1fksZq70Lne9313iTm09V9Z12b2DZRtdPviXZrV28a45PGNMqXrQmHaG9V1sEcbd8Zer69eVrcp8vHu4fF9TLVhEGX0lyJimmjNM0LwbiuiCEVVLkuCa1KRni-ygBXBcWCVwpzhlWpFFVYF3RFCJmh0zE3NrQyaNsZ_apd2xrdySz-AWJA5yNae_fRx9NkY4M2dR2buj7ITGSiyCHjONKzP_TN9b6NJ3yrrGC8EFFdjGpYJnizkmtvm9JvJAY5zC8LuZ0_2pNtYq8aU_3Kn70juBzB0L4clv0n7QsHY4wD</recordid><startdate>20240221</startdate><enddate>20240221</enddate><creator>Cooper, Anthony J.</creator><creator>Grzetic, Douglas J.</creator><creator>Delaney, Kris T.</creator><creator>Fredrickson, Glenn H.</creator><general>American Institute of Physics</general><general>American Institute of Physics (AIP)</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-6716-9017</orcidid><orcidid>https://orcid.org/0000-0001-9808-0739</orcidid><orcidid>https://orcid.org/0000-0003-0356-1391</orcidid><orcidid>https://orcid.org/0000-0002-5185-6920</orcidid><orcidid>https://orcid.org/0000000303561391</orcidid><orcidid>https://orcid.org/0000000267169017</orcidid><orcidid>https://orcid.org/0000000251856920</orcidid><orcidid>https://orcid.org/0000000198080739</orcidid></search><sort><creationdate>20240221</creationdate><title>Investigating microstructure evolution in block copolymer membranes</title><author>Cooper, Anthony J. ; 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| subjects | Block copolymer Block copolymers Composition Field theory Glass transition Glass transitions Glassy dynamics Mass transfer MATERIALS SCIENCE Mean field theory Membrane technology Membranes Micelles Parameter sensitivity Phase separation Polymers Process parameters Random phase approximation Self consistent fields Self-assembly Solvents Surface layers Thermal fluctuations Thin films |
| title | Investigating microstructure evolution in block copolymer membranes |
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