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Random Liquid Crystalline Copolymers Consisting of Prolate and Oblate Liquid Crystal Monomers

Xu, Yang and Dupont, Robert L. and Yao, Yuxing and Zhang, Meng and Fang, Jen-Chun and Wang, Xiaoguang (2021) Random Liquid Crystalline Copolymers Consisting of Prolate and Oblate Liquid Crystal Monomers. Macromolecules, 54 (12). pp. 5376-5387. ISSN 0024-9297. doi:10.1021/acs.macromol.1c00006. https://resolver.caltech.edu/CaltechAUTHORS:20210730-175322473

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Abstract

Interactions between side chains of polymers have been utilized to tune the thermal and mechanical properties of polymeric materials. In liquid crystal (LC) elastomers (LCEs), previous studies have demonstrated that the configuration of LC monomers, specifically oblate or prolate, determines the direction of macroscopic material deformations relative to the orientational ordering of the LC functional groups. However, the effects of the copolymerization between different configurations of LC monomers on the phase behaviors and thermomechanical properties of LCEs have not been explored. Here, we reveal that statistically random copolymers of LC monomers with different configurations destabilize the orientational order of the LC functional groups, whereas the random insertion of LC monomers with the same configuration preserves the packing of the constituent mesogenic functional groups. We further demonstrate how this fundamental understanding can be applied to control both the direction and magnitude of the thermally triggered mechanical deformations of LC copolymer networks.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acs.macromol.1c00006DOIArticle
ORCID:
AuthorORCID
Xu, Yang0000-0002-9945-7507
Yao, Yuxing0000-0003-0337-6372
Wang, Xiaoguang0000-0002-4079-9596
Additional Information:© 2021 American Chemical Society. Received: January 2, 2021; Revised: May 21, 2021; Published: June 7, 2021. We thank Prof. Xiaodan Gu and Guorong Ma (The University of Southern Mississippi) for their help with WAXS characterization. This work was supported by the startup funds of The Ohio State University (OSU) and the OSU Institute for Materials Research Kickstart Facility Grant. Author Contributions: Y.X., R.L.D., and Y.Y. contributed equally. The manuscript was written through contributions of all the authors. All the authors have given approval to the final version of the manuscript. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
Ohio State UniversityUNSPECIFIED
Subject Keywords:Monomers, Copolymers, Deformation, Liquid chromatography, Polymers
Issue or Number:12
DOI:10.1021/acs.macromol.1c00006
Record Number:CaltechAUTHORS:20210730-175322473
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210730-175322473
Official Citation:Random Liquid Crystalline Copolymers Consisting of Prolate and Oblate Liquid Crystal Monomers Yang Xu, Robert L. Dupont, Yuxing Yao, Meng Zhang, Jen-Chun Fang, and Xiaoguang Wang. Macromolecules 2021 54 (12), 5376-5387; DOI: 10.1021/acs.macromol.1c00006
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110103
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 Aug 2021 16:54
Last Modified:02 Aug 2021 16:54

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