Prestrain relaxation in non-covalently modified ethylene-vinyl acetate | PyChol | multiwall carbon nanotube nanocomposites | Zendy

A. Douglas Winter | Zendy; Cherno Jaye | Zendy; Daniel A. Fischer | Zendy; Mária Omastová | Zendy; Eva M. Campo | Zendy

Open Access

Prestrain relaxation in non-covalently modified ethylene-vinyl acetate | PyChol | multiwall carbon nanotube nanocomposites

Author(s) -

A. Douglas Winter,

Cherno Jaye,

Daniel A. Fischer,

Mária Omastová,

Eva M. Campo

Publication year - 2014

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4884216

Subject(s) - materials science , carbon nanotube , nanocomposite , ethylene vinyl acetate , vinyl acetate , covalent bond , composite material , polymer , dynamic mechanical analysis , ethylene , relaxation (psychology) , dispersion (optics) , chemical engineering , organic chemistry , copolymer , psychology , social psychology , chemistry , catalysis , physics , optics , engineering

Effects of aging on chemical structure and molecular dynamic behaviour of strained thermally active ethylene-vinyl acetate | multiwall carbon nanotube (EVA|MWCNT) composites were investigated by spectroscopy and microscopy techniques. Aged composites showed spatial inhomogeneity due to system relaxation. Inhomogeneity is attributed to segregation of non-covalently linked cholestryl 1-pyrenecarboxylate, acting as MWCNT dispersant and polymer compatibilizer. Analysis of molecular interplay between filler and matrix upon in situ temperature variation showed a lack of synchronicity, which had been observed in fresh composites. Reduced synchronous interplay allowed quantification of degraded π-π interactions, promoting PyChol unlatching as a result of both sonication and strained-derived π-π degradation.

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