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Free Standing Dry and Stable Nanoporous Polymer Films Made through Mechanical Deformation.

ABSTRACT: A new straight forward approach to create nanoporous polymer membranes with well defined average pore diameters is presented. The method is based on fast mechanical deformation of highly entangled polymer films at high temperatures and a subsequent quench far below the glass transition temperature T_g . The process is first designed generally by simulation and then verified for the example of polystyrene films. The methodology does not need any chemical processing, supporting substrate, or self assembly process and is solely based on polymer inherent entanglement effects. Pore diameters are of the order of ten polymer reptation tube diameters. The resulting membranes are stable over months at ambient conditions and display remarkable elastic properties.

SUBMITTER: Hsu HP

PROVIDER: S-EPMC10288257 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Free Standing Dry and Stable Nanoporous Polymer Films Made through Mechanical Deformation.

Hsu Hsiao-Ping HP Singh Manjesh K MK Cang Yu Y Thérien-Aubin Héloïse H Mezger Markus M Berger Rüdiger R Lieberwirth Ingo I Fytas George G Kremer Kurt K

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20230425 18

A new straight forward approach to create nanoporous polymer membranes with well defined average pore diameters is presented. The method is based on fast mechanical deformation of highly entangled polymer films at high temperatures and a subsequent quench far below the glass transition temperature T<sub>g</sub> . The process is first designed generally by simulation and then verified for the example of polystyrene films. The methodology does not need any chemical processing, supporting substrate ...[more]

PMID: 37096844

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