Multi-walled carbon nanotubes reinforced interpenetrating polymer network with ultrafast self-healing and anti-icing attributes.
J Colloid Interface Sci
; 540: 247-257, 2019 Mar 22.
Article
em En
| MEDLINE
| ID: mdl-30641402
ABSTRACT
HYPOTHESIS:
Fabrication of polymeric nanocomposites with suitable nanomaterial via an in-situ polymerization approach results in multifunctional advanced materials. EXPERIMENTS The present work demonstrates the fabrication of interpenetrating polymer network (IPN)-based smart nanocomposites of polyurethane and polystyrene (PS) with different weight percentages of multi-walled carbon nanotubes (MWCNT). The MWCNT was grafted with pre-polymer of PS. The grafted-MWCNT and the nanocomposites were analyzed by Fourier transform infrared and Raman spectroscopic, X-ray diffraction, transmission electron microscopic studies. Further, different properties of the nanocomposites were evaluated.FINDINGS:
The fabricated nanocomposites showed excellent enhancement in mechanical (tensile strength 175.9%; elongation at break 161.9%; and toughness 279.8%) and thermal (initial degradation temperature 107.8%) properties compared to the pristine IPN. The improved properties are because of strong interfacial matrix-nanomaterial interactions. In addition, the nanocomposites demonstrated high water repellence (static contact angle varied from 127.9° to 143.6°), outstanding self-cleaning and anti-icing (freezing delay time of 1850-2700â¯s) behaviors. Most interestingly, the fabricated nanocomposites exhibited excellent self-healing ability under the exposure of microwave (within 46-22â¯s at 300â¯W power input) and sunlight (within 318-257â¯s, light intensity 0.9-1.1â¯×â¯105â¯lux). Therefore, the studied nanocomposites hold significant potential to be used in the domains of advanced smart materials.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
J Colloid Interface Sci
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Índia