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Using sonochemistry for the production of poly(vinyl alcohol)/MWCNTs-vitamin B1 nanocomposites: Exploration of morphology, thermal and mechanical properties

Abstract

The structural, crystallinity, and interfacial interactions as well as thermal and tensile strength features of poly(vinyl alcohol) (PVA) reinforced with diverse concentrations of modified carboxylated multi-walled carbon nanotubes (MWCNTs-CA) were studied. To prevent agglomeration and achieve a homogeneous distribution of MWCNT into the PVA matrix, at first, the surface of MWCNTs was covalently treated by inserting vitamin B1 (B1) and creation of ester and amide groups through the ultrasonic distribution technique as an inexpensive, rapid, environmental, and impressive method. In the second step, diverse amounts of treated MWCNTs (3, 5 and 7 wt%) were exfoliated to the PVA matrix via ultrasonication method and solution casting for the fabrication of PVA/B1-MWCNTs nanocomposite (NC) films. Characterization of the obtained PVA/B1-MWCNTs NCs and their thermal and mechanical performances are reported in this study. In comparison to other amount of MWCNTs, the PVA/B1-MWCNTs NCs (7 wt %) showed the greater thermal property. Also, the presence of B1-MWCNTs increased the mechanical property by a significant amount at only 1, and 5 wt% MWCNTs loading, which is the best value for the fabricated NCs. Excess MWCNTs gave a great negative influence on the mechanical behavior of the PVA matrix.

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Publication details

The article was received on 08 Jan 2019, accepted on 11 Apr 2019 and first published on 11 Apr 2019


Article type: Paper
DOI: 10.1039/C9NJ00116F
Citation: New J. Chem., 2019, Accepted Manuscript

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    Using sonochemistry for the production of poly(vinyl alcohol)/MWCNTs-vitamin B1 nanocomposites: Exploration of morphology, thermal and mechanical properties

    S. Mallakpour and F. Azimi , New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ00116F

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