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Cure kinetics of epoxy/MWCNTs nanocomposites: Isothermal calorimetric and rheological analyses

Abstract

A combinatorial route has been applied in cure kinetics study of epoxy nanocomposites containing multi-walled carbon nanotubes (MWCNTs) based on differential scanning calorimetry and rheokinetic analyses under isothermal conditions. Pristine and amine-modified MWCNTs bearing primary and secondary amines were used at very low concentrations (0.1 and 0.3 wt.% based on epoxy weight). Model-free and model-fitting methods were applied on calorimetric data, and Kamal autocatalytic model revealed good agreement with the experimental data. In case of epoxy filled with amine-modified MWCNTs, activation energy took a value lower than that obtained for sample containing pristine MWCNTs at an identical loading because of less hindrance brought about by curing. Isothermal rheokinetic studies supported formation of a filler network during processing, which hindered epoxy-anhydride cure reaction at higher MWCNTs loadings leading to a highly crosslinked epoxy network.

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Authors (6)

  • Photo of  Poornima Vijayan

    Poornima Vijayan

    • Qatar University Center for Advanced Materials
  • Photo of  Debora Puglia

    Debora Puglia

    • University of Perugia Materials Engineering Centre, Department of Civil and Environmental Engineering
  • Photo of  Hadi Rastin

    Hadi Rastin

    • University of Tehran College of Engineering, School of Chemical Engineering
  • Photo of  Mohammad Saeb

    Mohammad Saeb

    • Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives
  • Photo of  Behrouz Shojaei

    Behrouz Shojaei

    • Amirkabir University of Technology, Tehran, Iran Department of Polymer Engineering and Color Technology

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Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
PROGRESS IN ORGANIC COATINGS no. 108, pages 75 - 83,
ISSN: 0300-9440
Language:
English
Publication year:
2017
Bibliographic description:
Vijayan P., Puglia D., Rastin H., Saeb M., Shojaei B., Formela K.: Cure kinetics of epoxy/MWCNTs nanocomposites: Isothermal calorimetric and rheological analyses// PROGRESS IN ORGANIC COATINGS. -Vol. 108, (2017), s.75-83
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.porgcoat.2017.04.005
Verified by:
Gdańsk University of Technology

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