A simple method for the sonochemical synthesis of PVA/ZrO2-vitamin B1 nanocomposites: Morphology, mechanical, thermal and wettability investigations

Abstract

Poly(vinyl alcohol) (PVA) based nanocomposites (NCs) filled by various weight percent of modified ZrO nanoparticles (NPs) with vitamin B (VB) up to 7wt% were fabricated via ultrasonication method then was cast to thin films. The ultrasonication was applied for the preparation and modification process asan easy, safe and fast method. Ultrasonic was responsible for great homogeneities of NPs into PVA matrix, which could not be achieved by mechanical or magnetically stirring. The creation of polymer NCs and changes in the structural properties were examined by X-ray diffraction. FT-IR spectroscopy indicated the possible interactions of the ZrO-VB NPs with the PVA backbones and also, existence of absorption bands related to PVA and ZrO NPs in the NC structures. The distribution of nano-fillers and uniform morphology of the NCs showed that the ZrO-VB NPs were homogeneously dispersed in the polymer matrix in the nanosized scale. UV-Vis analysis shown that the the optical absorption were improved by evolution of ZrO-VB NPs content. The tensile strength of PVA film was increased significantly with increasing the ZrO-VB NPs content. Thermal gravimetric analysis confirmed that NCs displayed higher thermal stability than the pristine PVA. Also, water contact angle analysis indicated that the hydrophilicity of NC films was enhanced with increasing the concentration of ZrO NPs.

Employment of ultrasonic waves for the preparation of PVA/TiO2‐BSA nanocomposites: Mechanical, thermal, and optical properties

“…All of the PVA/TiO 2 ‐BSA NC films showed a peak in the range 200–300 nm so that in the pure PVA in this region, this peak corresponded to π→π∗ electron transition of residual CO in the PVA. As it is clear from Figure , the optical absorption of PVA/TiO 2 ‐BSA NC films was higher than pure PVA and a partial red shift was observed because of suitable interactions between TiO 2 ‐BSA NPs with PVA polymer matrix …”

“…As it is clear from Figure 15, the optical absorption of PVA/TiO 2 -BSA NC films was higher than pure PVA and a partial red shift was observed because of suitable interactions between TiO 2 -BSA NPs with PVA polymer matrix. 40 The band gap values of pure TiO 2 , TiO 2 -BSA NPs, and PVA/ TiO 2 -BSA NC film 6 wt % were calculated to be 3.6, 3.6, and 4.8 from the eq. (1).…”

Photostable electroactive polymer based nanocomposite films for the protection of mild steel from corrosion

“…But it is reported that there is an increment in the absorption maxima of poly(PyMMA-co-BMA) coated MS at 252 nm validate the complex formation between the MS and functional polymer. 10,28,29…”

Sonochemical Synthesis of Poly(lactic acid) Nanocomposites with ZnO Nanoflowers: Effect of Nanofiller Morphology on Physical Properties

“…Uniform dispersion of nanofiller in the polymer matrix is essential for attaining desired enhanced properties. The use of sonication (or ultrasound irradiation) has been attempted by many previous authors to achieve uniform dispersion of nanofiller in the polymer matrix. − Mallakpour et al fabricated nanocomposites of poly­(vinyl alcohol) and ZrO 2 nanoparticles by using the ultrasound-assisted solvent casting method. Dhatarwal et al also reported ultrasound-assisted synthesis of poly­(methyl methacrylate)/MMT nanocomposites using the solution casting method.…”