Reference : Electrospun Composite Liquid Crystal Elastomer Fibers
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
Physics and Materials Science
http://hdl.handle.net/10993/37743
Electrospun Composite Liquid Crystal Elastomer Fibers
English
Sharma, Anshul mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Lagerwall, Jan mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
7-Mar-2018
Materials
MDPI AG
11
3
Liquid Crystal-Assisted Advanced Functional Materials
393
Yes (verified by ORBilu)
International
1996-1944
Basel
Switzerland
[en] liquid crystal elastomers ; electrospinning ; fibers ; nematic ; core-sheath ; actuators ; polyvinylpyrrolidone ; polylactic acid
[en] We present a robust method to prepare thin oriented nematic liquid crystalline elastomer-polymer (LCE-polymer) core-sheath fibers. An electrospinning setup is utilized to spin a single solution of photo-crosslinkable low molecular weight reactive mesogens and a support polymer to form the coaxial LCE-polymer fibers, where the support polymer forms the sheath via in situ phase separation as the solvent evaporates. We discuss the effect of phase separation and compare two different sheath polymers (polyvinylpyrrolidone and polylactic acid), investigating optical and morphological properties of obtained fibers, as well as the shape changes upon heating. The current fibers show only irreversible contraction, the relaxation most likely being hindered by the presence of the passive sheath polymer, increasing in stiffness on cooling. If the sheath polymer can be removed while keeping the LCE core intact, we expect LCE fibers produced in this way to have potential to be used as actuators, for instance in soft robotics and responsive textiles.
European Commission - EC
Researchers
http://hdl.handle.net/10993/37743
10.3390/ma11030393
H2020 ; 648763 - INTERACT - Intelligent Non-woven Textiles and Elastomeric Responsive materials by Advancing liquid Crystal Technology

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