Study on Structure, Thermal Behavior and Viscoelastic Properties of Nanodiamond-Reinforced Poly (vinyl alcohol) Nanocomposites

Polymers

KishorKumar Sadasivuni¹  Veronika Vavruňková²  Kalim Deshmukh²  Tomáš Kovářík²  Rostislav Medlín²  Mina Ghafouri Azar²  Jaroslav Kadlec²  Tomáš Remiš²  Petr Bělský² 

[1] Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar;New Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic;

关键词: poly (vinyl alcohol);    nanodiamond;    nanocomposite;    mechanical properties;    morphology;   

DOI  :  10.3390/polym13091426

来源: DOAJ

【 摘 要 】

In this work, advanced polymer nanocomposites comprising of polyvinyl alcohol (PVA) and nanodiamonds (NDs) were developed using a single-step solution-casting method. The properties of the prepared PVA/NDs nanocomposites were investigated using Raman spectroscopy, small- and wide-angle X-ray scattering (SAXS/WAXS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). It was revealed that the tensile strength improved dramatically with increasing ND content in the PVA matrix, suggesting a strong interaction between the NDs and the PVA. SEM, TEM, and SAXS showed that NDs were present in the form of agglomerates with an average size of ~60 nm with primary particles of diameter ~5 nm. These results showed that NDs could act as a good nanofiller for PVA in terms of improving its stability and mechanical properties.

【 授权许可】

Unknown