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Issue 102, 2016, Issue in Progress
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Ultrathin 2D VOPO4 nanosheets: a novel reinforcing agent in polymeric composites

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Abstract

In the present work, ultrathin VOPO4 nanosheets were prepared through simple ultrasonication in 2-propanol, starting from bulk VOPO4·2H2O chunks. Subsequently, the ultrathin VOPO4 nanosheets were incorporated into poly(vinyl alcohol) (PVA) matrix as reinforcing agents based on a solution casting method. The ultrathin VOPO4 nanosheets were homogeneously dispersed in PVA matrix and no obvious aggregation was observed, leading to remarkable improvements of thermal stability, flame retardancy, and mechanical properties. With the incorporation of 3.0 wt% VOPO4 nanosheets into PVA, the initial decomposition temperature (Tonset)and half weight loss temperature (T50%) increased by 45 °C and 139 °C, respectively. In addition, the presence of ultrathin VOPO4 nanosheets decreases the decomposition rate of PVA and increases the amount of char residues. Furthermore, the peak heat release rate and the tensile strength of PVA films was decreased by 67% and improved by 45%, respectively, compared to that of neat PVA. These remarkably enhanced properties were mainly attributed the well dispersion, physical barrier effect and catalytic carbonization effect of the ultrathin VOPO4 nanosheets.

Graphical abstract: Ultrathin 2D VOPO4 nanosheets: a novel reinforcing agent in polymeric composites

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Publication details

The article was received on 28 Sep 2016, accepted on 17 Oct 2016 and first published on 17 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA24111E
Citation: RSC Adv., 2016,6, 100344-100351
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    Ultrathin 2D VOPO4 nanosheets: a novel reinforcing agent in polymeric composites

    K. Zhou, Z. Gui and Y. Hu, RSC Adv., 2016, 6, 100344
    DOI: 10.1039/C6RA24111E

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