Improved Mechanical Compliance in Bicontinuous Cubic Lyotropic Membranes Based on a Cross-Linking Gemini Monomer via Copolymerization with a Non-Cross-Linkable Analog

Membrane materials for use in chemical protective garments for the U.S. military should have ≥20% reversible stretch without breaking. Copolymerization of a cross-linking gemini lyotropic liquid crystal (LLC) monomer with controlled amounts of a non-cross-linkable analog allows formation of nanoporo...

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Bibliographic Details
Published in:ACS applied polymer materials 2022-11, Vol.4 (11), p.8026-8031
Main Authors: Bodkin, Lauren N., Li, Patrick, Dyer, Samantha S., Krajnak, Zachary A., Malecha, John J., Noble, Richard D., Gin, Douglas L.
Format: Article
Language:English
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Summary:Membrane materials for use in chemical protective garments for the U.S. military should have ≥20% reversible stretch without breaking. Copolymerization of a cross-linking gemini lyotropic liquid crystal (LLC) monomer with controlled amounts of a non-cross-linkable analog allows formation of nanoporous, bicontinuous cubic polymer membranes with higher % strain-at-failure values of ≥20% and lower Young’s modulus values while retaining high water vapor transport. Although chemical warfare agent (CWA) simulant vapor rejection decreases with the reduced cross-link density, increased mechanical pliability was achieved, demonstrating that the mechanical properties of these LLC-based, breathable CWA-barrier materials can be modified in this fashion.
ISSN:2637-6105
2637-6105
DOI:10.1021/acsapm.2c01478