Influence of surface modification of carbon nanotubes on interactions with polystyrene-b-polyisoprene-b-poly styrene matrix and its photo-actuation properties

The influence of various surface modification of multiwalled carbon nanotubes (MWCNT) on preferential interactions with individual phases of the linear triblock copolymer polystyrene-b-polyisoprene-b-poly styrene (SIS) and the photo-actuation ability, reproducibility, and stability of the composite...

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Bibliographic Details
Published in:Polymers for advanced technologies 2014-11, Vol.25 (11), p.1293-1300
Main Authors: Ilcikova, Marketa, Mosnacek, Jaroslav, Mrlik, Miroslav, Sedlacek, Tomas, Csomorova, Katarina, Czanikova, Klaudia, Krupa, Igor
Format: Article
Language:English
Subjects:
Activation energy
Covalence
Dynamic tests
Glass transition
Phases
Polystyrene resins
Styrenes
Surface chemistry
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Summary:The influence of various surface modification of multiwalled carbon nanotubes (MWCNT) on preferential interactions with individual phases of the linear triblock copolymer polystyrene-b-polyisoprene-b-poly styrene (SIS) and the photo-actuation ability, reproducibility, and stability of the composite was investigated. The preferential interactions of MWCNT were achieved with covalent modification of MWCNT surface either with cholesteryl groups (MWCNT-chol) or with short polystyrene chains (MWCNT-PS). The specific interactions were investigated by dynamic mechanical analysis. The activation energy of glass transition of the polystyrene phase in the MWCNT-PS/SIS composite increased significantly compared with the neat SIS matrix, while the incorporation of MWCNT-chol resulted in selective increase of activation energy of glass transition of the polyisoprene phase. The best reproducible and stable photo-actuation behavior was obtained during irradiation of the composite containing low content of MWCNT-PS. Copyright copyright 2014 John Wiley & Sons, Ltd.
ISSN:1042-7147
1099-1581
DOI:10.1002/pat.3324