Estimation of structural and mechanical properties of Cadmium Sulfide/PVA nanocomposite films

Abstract

Cadmium Sulfide (CdS) nanoparticles have been synthesized by hydrothermal method, and dispersed in varying amounts by weight, in Poly Vinyl Alcohol (PVA) matrix. Subsequently, PVA/CdS nanocomposite films have been characterized and analyzed to estimate CdS nanoparticles effect on the properties of PVA films. Both mechanical and structural properties have been considered for the analysis. From the FTIR (Fourier Transform Infrared Spectroscopy) analysis it's found that stretching of C-H, CO, COC and COS were observed at different peaks that may be due to different functional groups. X-ray diffraction (XRD) results showed that the matrix contain pure nano CdS particles. The images obtained by Scanning Electron Microscopy (SEM) showed the presence of varying degree of agglomerated CdS nanoparticles distributed homogeneously in the PVA/CdS nanocomposite. Thermal properties are found using DSC (Differential Scanning Calorimetry) was used to investigate. PVA/CdS samples were tested by Universal Testing Machine (UTM) and the results indicated improvement in mechanical properties when compared with neat PVA film, viz. Young's modulus (from 33.20 to 94.30 MPa), ultimate tensile stress (from 17.03 to 27.60 MPa), toughness (from 2.18 to 17.62 MPa) and flexural strength (from 4.43 to 7.66 Mpa) with increase in the CdS content in the nanocomposite film.

Studies on thermal and mechanical behavior of nano TiO2 - epoxy polymer composite

“…The multistage thermo-oxidative degradation of epoxy systems has been reported in previous studies [31]. It is reasoned that several complex chemical reactions involving epoxy chains, such as aromatization and dehydrogenation of alkyl groups occurred [32]. Incorporating inorganic fillers tends to delay the volatilization of several by-products originating during thermal decomposition, thus giving a way to multistage degradation.…”

Production of potential antioxidant and antimicrobial active films of poly (vinyl alcohol) incorporated with cashew tree extract

“…Koteswararao et al (2019) produced PVA films embedded with cadmium sulfide nanoparticles at various concentrations. The authors obtained mechanical values for pure PVA films of 33.20 MPa for the modulus of elasticity and 17.03 MPa for tensile strength.…”

In Situ Li3PO4/PVA Solid Polymer Electrolyte Protective Layer Stabilizes the Lithium Metal Anode

“…The crystallinity of PVA was reduced effectively. The inorganic salt particles in PVA can enhance the mechanical properties of the protective layer . Hence, the synergy of PVA and Li 3 PO 4 can effectively improve the performance of the protective layer and stabilize the lithium deposition behavior.…”