Papers by marzieh darvishzadeh
Polymers for Advanced Technologies, 2018
The present study deals with the immobilization of ZnO nanoparticles (NPs) as nanofiller inside p... more The present study deals with the immobilization of ZnO nanoparticles (NPs) as nanofiller inside poly(vinyl alcohol) (PVA) by solution casting method which is a lowcost, environmental-friendly, and rapid method of sonochemistry. Firstly, the surface of ZnO NPs was treated by bovine serum albumin (BSA) in the phosphate-buffered solution under ultrasonic cavitation. Three diverse polymeric nanocomposites (NCs) are formed by changing the percentage of ZnO@BSA NPs (3, 6, and 9 wt%) with same amount of PVA. The structure properties, morphology, and thermal stability of prepared NCs were determined through Fourier transform-infrared spectroscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy (EDX) and optical UV-Visible spectrum, transmission electron microscopy (TEM), and field emission scanning electron microscopy. The presence and the dispersal of the ZnO@BSA NPs in the PVA matrix were recognized by TEM. In the X-ray diffraction analysis, the values of mean particle size using Debye-Scherrer equation were estimated in the range 4 to 6 nm that is almost in agreement with TEM analysis. Increase of 14% in thermal stability and also increase of more than 2-fold of the tensile strength of PVA/ZnO@BSA NC 9 wt% in respect to the pure PVA showed that the modified NPs well dispersed within PVA and attached to it.
Ultrasonics Sonochemistry, 2018
materials based on poly(vinyl chloride) and bovine serum albumin modified ZnO through ultrasonic ... more materials based on poly(vinyl chloride) and bovine serum albumin modified ZnO through ultrasonic irradiation as a green technique: Optical, thermal, mechanical and morphological properties, Ultrasonics Sonochemistry (2017),
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Papers by marzieh darvishzadeh