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Multi-Stimuli Responsive Carbon Nanotube Incorporated Polysiloxane Azobenzene Liquid Crystalline Elastomer Composites

In this work, aiming to combine thermal-induced LC-toisotropic phase transition effect, azobenzene's trans-cis tautomerization effect and the photothermal effect into one liquid crystalline elastomer (LCE) system to prepare a heat/UV/near-infrared(NIR) triple-stimuli-responsive LCE material, we desi... Full description

Contained in: Macromolecules Vol. 49, No. 2 (2016), p. 663-671
Fulltext access:
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Links: Additional Link (dx.doi.org)
ISSN: 1520-5835
Additional Keywords: ELASTOMER
FORMGEDAECHTNISEFFEKT
KOHLENSTOFFNANOROEHRCHEN
LASER
PHASENUMWANDLUNG
SILICON:POLYMER
STEUEREINRICHTUNG
ULTRAVIOLETTBESTRAHLUNG
VERBUNDFOLIE
VERBUNDWERKSTOFF
VERKNUEPFUNGSSCHALTUNG
WELLENLAENGE
DOI: 10.1021/acs.macromol.5b02388
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 9 Seiten, 66 Quellen
ID (e.g. DOI, URN): 10.1021/acs.macromol.5b02388
PPN (Catalogue-ID): WTI001336649
Note: WTI TEMA DB
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520 |a In this work, aiming to combine thermal-induced LC-toisotropic phase transition effect, azobenzene's trans-cis tautomerization effect and the photothermal effect into one liquid crystalline elastomer (LCE) system to prepare a heat/UV/near-infrared(NIR) triple-stimuli-responsive LCE material, we design and synthesize a polysiloxane-based side-chain side-on azobenzene-containing LCE matrix embedded with 1 wt % single-walled carbon nanotubes, through Finkelmann's two-step cross-linking process coupled with a uniaxial stretching technique. The multistimuli responsive behaviors of this LCE/CNT composite film are investigated under different external stimuli (heat, UV, NIR). The composite film can realize a reversible deformation between contraction and extension under heating/cooling cycles. Moreover, the composite film can perform an impressive three-dimensional deformation (bending) under UV-light irradiation. On the contrary, long wavelength light (NIR laser) forces the composite film into shrinking instead of bending. Most importantly, the shape transformations (three-dimensional bending vs two-dimensional shrinking) of this novel shape memory material can be tuned by the light wavelength (UV vs NIR), which might endow this LCE material with potential applications in control devices and logic gate devices, etc. 
653 4 |a VERBUNDFOLIE 
653 4 |a SILICON:POLYMER 
653 4 |a ELASTOMER 
653 4 |a ULTRAVIOLETTBESTRAHLUNG 
653 4 |a KOHLENSTOFFNANOROEHRCHEN 
653 4 |a LASER 
653 4 |a STEUEREINRICHTUNG 
653 4 |a VERBUNDWERKSTOFF 
653 4 |a FORMGEDAECHTNISEFFEKT 
653 4 |a PHASENUMWANDLUNG 
653 4 |a WELLENLAENGE 
653 4 |a VERKNUEPFUNGSSCHALTUNG 
773 0 8 |i In  |t Macromolecules  |g Vol. 49, No. 2 (2016), p. 663-671  |q 49:2<663-671  |x 1520-5835  |x 1520-5835 
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950 |a Azobenzol  |a photothermischer Effekt  |a external stimulus  |a reversible Deformation  |a Heiz- und Abkühlungszykluszeit  |a dreidimensionale Deformation  |a Lichtwellenlänge  |2 DE-601 
951 |a AR 
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