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Article

Cyclic Moisture Sorption and its Effects on the Thermomechanical Properties of Epoxy and Epoxy/MWCNT Nanocomposite

1
Institute for Mechanics of Materials, University of Latvia, Jelgavas 3, LV-1006 Riga, Latvia
2
Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, 80055 Granatello, Portici, Italy
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(9), 1383; https://doi.org/10.3390/polym11091383
Received: 27 June 2019 / Revised: 6 August 2019 / Accepted: 21 August 2019 / Published: 23 August 2019
The aim of this work was to reveal the moisture absorption–desorption–resorption characteristics of epoxy and epoxy-based nanocomposites filled with different multiwall carbon nanotubes (MWCNTs) by investigating the reversibility of the moisture effect on their thermomechanical properties. Two types of MWCNTs with average diameters of 9.5 and 140 nm were used. For the neat epoxy and nanocomposite samples, the moisture absorption and resorption tests were performed in atmospheres with 47%, 73%, and 91% relative humidity at room temperature. Dynamic mechanical analysis was employed to evaluate the hygrothermal ageing effect for unconditioned and environmentally “aged” samples. It was found that moisture sorption was not fully reversible, and the extent of the irreversibility on thermomechanical properties was different for the epoxy and the nanocomposite. The addition of both types of MWCNTs to the epoxy resin reduced sorption characteristics for all sorption tests, improved the hygrothermal and reduced the swelling rate after the moisture absorption–desorption. View Full-Text
Keywords: cyclic moisture sorption; epoxy; multiwall carbon nanotubes; dynamic mechanical analysis; glass transition temperature cyclic moisture sorption; epoxy; multiwall carbon nanotubes; dynamic mechanical analysis; glass transition temperature
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MDPI and ACS Style

Glaskova-Kuzmina, T.; Aniskevich, A.; Sevcenko, J.; Borriello, A.; Zarrelli, M. Cyclic Moisture Sorption and its Effects on the Thermomechanical Properties of Epoxy and Epoxy/MWCNT Nanocomposite. Polymers 2019, 11, 1383. https://doi.org/10.3390/polym11091383

AMA Style

Glaskova-Kuzmina T, Aniskevich A, Sevcenko J, Borriello A, Zarrelli M. Cyclic Moisture Sorption and its Effects on the Thermomechanical Properties of Epoxy and Epoxy/MWCNT Nanocomposite. Polymers. 2019; 11(9):1383. https://doi.org/10.3390/polym11091383

Chicago/Turabian Style

Glaskova-Kuzmina, Tatjana, Andrey Aniskevich, Jevgenijs Sevcenko, Anna Borriello, and Mauro Zarrelli. 2019. "Cyclic Moisture Sorption and its Effects on the Thermomechanical Properties of Epoxy and Epoxy/MWCNT Nanocomposite" Polymers 11, no. 9: 1383. https://doi.org/10.3390/polym11091383

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