Abstract
Carbon nanomaterials are well-known for their unique physical properties. They have attracted interest as reinforcing fillers because of their superb mechanical properties. We report the excellent reinforcement properties of polymer nanocomposites by the incorporation of nanodiamond (ND). ND has been expected to offer polymer nanocomposites optimal properties because of its smooth surface and excellent optical, mechanical, and thermal properties, which can approach the values of single diamond crystal. We prepared advanced nanocomposites membranes based on poly(vinyl alcohol) (PVA) and ND in a single step using the solution casting method from aqueous medium and achieved the high dispersibility of ND in the PVA matrices. The thermal, mechanical and rheological properties of the membranes were investigated by means of thermogravimetry (TGA), dynamic mechanical analysis (DMA) and Ares G2 rheometer. The resulting nanocomposites had excellent properties derived both from ND and PVA. Thermal and mechanical properties increased dramatically with increasing ND content, indicating a strong interaction between ND and PVA. We anticipate that ND will be able to compete as a nano filler against conventional carbon-based nano fillers for polymer composites, and it is possible their reinforcement properties will be extended in the future.
Highlights
Polymer nanocomposites have attracted much attention in scientific fields and in industrial applications due to the excellent abilities of nano-sized fillers
We report the excellent reinforcement properties of polymer nanocomposites by the incorporation of nanodiamond (ND)
We prepared advanced nanocomposites membranes based on poly(vinyl alcohol) (PVA) and ND in a single step using the solution casting method from aqueous medium and achieved the high dispersibility of ND in the PVA matrices
Summary
Polymer nanocomposites have attracted much attention in scientific fields and in industrial applications due to the excellent abilities of nano-sized fillers. Nanocomposites have been reported to provide remarkable improvements in materials properties, including mechanical, thermal, and barrier properties, compared with those of polymer itself and micro-sized fillers composites.[1] Carbon-based nanomaterials are well-known for their incredibly high mechanical properties, and they have attracted interest as reinforcing fillers for polymer nanocomposites.[2] In recent years, NDs has been produced by several procedures, such as detonation shock-wave synthesis (from various starting materials), and it has been exploited in vast fields of nanotechnology.[3] In this work, we selected PVA, a watersoluble and biodegradable polymer, as a polymer matrix.
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