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AuthorIlčíková, Markéta
AuthorCzaniková, Klaudia
AuthorMosnáček, Jaroslav
AuthorMičušík, Matej
AuthorKasák, Peter
AuthorOmastová, Mária
AuthorChorvát Jr., Dušan
AuthorKrupa, Igor
AuthorKoynov, Kaloian
AuthorSlouf, M.
Available date2022-05-31T19:01:34Z
Publication Date2013
Publication NameChemik
ResourceScopus
URIhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84878947513&partnerID=40&md5=754e72f4c77a159d808cc70366a33b3a
URIhttp://hdl.handle.net/10576/31902
AbstractIn this study, the photoactuation of styrene-b-isoprene-b-styrene (SIS) block copolymer containing multiwalled carbon nanotubes (MWCNT) is shown. In order to improve dispersion, the MWCNT were ovalently modified either by polystyrene chains or cholesteryl chloroformate. The composites were prepared by solution technique and in the form of prestretched stripes were tested by dynamic mechanical analysis (DMA) in iso-strain mode. The actuation stress produced in response to irradiation was monitored. The pre-stretching of the stripes should impose the orientation of the polymer hains and carbon nanotubes, which was proved by transmission electron microscopy (TEM). The impact of the various pre-stretching conditions of the stripes as well as constant preload of the DMA was tudied. Both the actuation contraction and expansion was observed. The highest actuation expansion stress observed was 14 kPa, while the contraction exhibited the highest stress of 3 kPa.
Languageen
SubjectActuation stress
Cholesteryl chloroformate
Contraction and expansion
Dynamic mechanical analysis (DMA)
Polystyrene chains
Solution techniques
Transmission electron microscopy (TEM)
Visually impaired people
Block copolymers
Isoprene
Multiwalled carbon nanotubes (MWCN)
Polystyrenes
Transmission electron microscopy
Styrene
TitlePhotoactuating of materials designed for haptic aid-tablets for visually impaired people based on styrene-b-isoprene-b-styrene block copolymer nanocomposites
TypeArticle
Pagination224-231
Issue Number3
Volume Number67
dc.accessType Abstract Only


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