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Cited by 108Advanced Materials and MechanicsLiquid Crystal Research AdvancementsPolymer composites and self-healing

Photocrosslinkable liquid crystal main-chain polymers: Thin films and electrospinning

Krause, Simon, Dersch, Roland, Wendorff, Joachim H., Finkelmann, Heino·2007·Macromolecular Rapid Communications
DOI 10.1002/marc.200700460
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Abstract

Abstract For mechanical actuators, a response to external stimuli is required. Main‐chain liquid crystal elastomers (MCLCEs) show high response to changes in temperature especially in the vicinity of a phase transition. Most of these crosslinked materials were synthesized in a one‐step reaction which leads to a macroscopically aligned elastomer. Up to now only macroscopic samples have been prepared. We are presenting a new approach which allows us to prepare thin films as well as aligned fibers. First a liquid crystalline main‐chain polymer with a photoactive moiety was synthesized, which was oriented by a mechanical field and photocrosslinked. The thin films show exceptional mechanical properties such as large temperature‐dependent changes in length and a nonlinear stress–strain relation. To obtain fibers, we used the electrospinning process from solution with in situ UV curing. We obtained crosslinked fibers with a uniform alignment of the nematic director. magnified image

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  • Alternative methods such as dual-curing and electrospinning have been employed to obtain more complex structures.

    “Recently, alternative methods, such as dual-curing [175] and electrospinning [176,177], have been employed to obtain more complex structures.”

    From Two-Way and Multiple-Way Shape Memory Polymers for Soft Robotics: An Overview (2020) · cites this paper as [176]

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Authors
Krause, S., Dersch, R., Wendorff, J. H., & Finkelmann, H.
Affiliations
  • University of Freiburg (DE)
  • Philipps University of Marburg (DE)
Corresponding author
Finkelmann, Heino
ORCID
Krause, Simon
Venue
Macromolecular Rapid Communications
Publisher
Wiley
Published
2007-10-22
Volume
28
Issue
21
Pages
2062-2068
ISSN
  • 1022-1336 (ISSN-L)
  • 1521-3927
DOI
10.1002/marc.200700460
OpenAlex
W2073367117
Cited by
108
References
20
Citations by year
2026: 4 · 2025: 8 · 2024: 3 · 2023: 5 · 2022: 5 · 2021: 5 · 2020: 7 · 2019: 5 · 2018: 7 · 2017: 4 · 2016: 3 · 2015: 5 · 2014: 10 · 2013: 10 · 2012: 8
FWCI
10.68
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Locations
Macromolecular Rapid Communications (publishedVersion)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Liquid Crystal Research Advancements
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
Keywords
liquid crystal elastomers, main-chain polymers, photocrosslinking, thin films, electrospinning, mechanical actuators, nonlinear stress-strain behavior, aligned fibers

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