Structural mechanical and electrical property evaluation of nano cadmium oxide polyvinyl alcohol composites

Rashmi, S. H.; Soumyashree, A.; Shrusti, S.; Shivani, S.; Aamir, D.; Kittur, Arjumand A.; Sudhina, H. K.; Koteswararao, J.; Madhu, G. M.

doi:10.1007/s12588-018-9201-3

Cited by 4 publications

(4 citation statements)

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“…A sudden decrease in value is observed at very high frequency this is probably due to the hopping of electrons, space charge relaxation and grain boundaries present in the epoxy composites. The large difference in electrical properties for 2.5 wt% CdO-ZnO/epoxy composites as compared to other concentrations is observed due to the fact that epoxy is completely saturated with nanofiller, blocking most of the epoxy reactive sites resulting in formation of voids and agglomerates [45,46].…”

Section: Electrical Modulus Spectrum Analysismentioning

confidence: 98%

Effect of nano CdO-ZnO content on structural, thermal, optical, mechanical and electrical properties of epoxy composites

Srikanth

Madhu

2023

J Met Mater Miner

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Cadmium oxide doped zinc oxide nanoparticles were synthesized by solution combustion technique. CdO-ZnO nanoparticles were reinforced into epoxy by ultrasonication technique. CdO-ZnO nano-particles are well known semiconducting materials which are found to exhibit excellent semiconducting behavior even at high frequencies. Hence it was introduced into epoxy to study the semiconducting nature of CdO-ZnO/epoxy composites. The polymer composites exhibited interesting phenomenon such as minimum heat losses at high frequencies indicating semi-conducting behaviour of the composites. The polymer composite was also analysed for its structural, thermal, optical and mechanical properties. The enhanced interaction of CdO-ZnO nanoparticles with epoxy has resulted in superior UV-shielding effeciency and mechanical properties. This paper mainly focusses upon the synthesis and development of CdO-ZnO/epoxy composites, the design and optimization of CdO-ZnO compositions, the mechanical toughening and failure mechanism, transport mechanism of charge carriers, conductivity relaxation, ionic polarization and prospects of CdO-ZnO/epoxy composites in various fields.

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Section: Electrical Modulus Spectrum Analysismentioning

confidence: 98%

Effect of nano CdO-ZnO content on structural, thermal, optical, mechanical and electrical properties of epoxy composites

Srikanth

Madhu

2023

J Met Mater Miner

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“…Film toughness for ZTA in PVA matrix was calculated by the area under the curve of Tensile Stress v/s Tensile Strain graph [17,18,20]. Figure 11 shows the effect of ZTA loading on film toughness.…”

Section: Effect Of Zta Loading On Film Toughnessmentioning

confidence: 99%

“…Polyvinyl alcohol (PVA) is a most preferred material of choice as a host matrix by various researchers [17][18][19][20][21][22] for the synthesis of polymer nanocomposites due its water soluble, non-toxic, ease of fabrication, transparent film forming ability, biodegradability, chemical stability and interesting mechanical properties. PVA is a semi-crystalline polymer with high optical clarity [20]. The hydroxyl bond present in PVA is found to exhibit good interaction between the matrix and the nanoparticles due its high aspect ratio [20].…”

Section: Introductionmentioning

confidence: 99%

“…PVA is a semi-crystalline polymer with high optical clarity [20]. The hydroxyl bond present in PVA is found to exhibit good interaction between the matrix and the nanoparticles due its high aspect ratio [20]. It is found to exhibit high dielectric permittivity with very good insulating properties hence, it is extensively used in electronic devices [22].…”

Section: Introductionmentioning

confidence: 99%

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Effect of ZTA concentration on structural, thermal, mechanical and dielectric behavior of novel ZTA–PVA nanocomposite films

Srikanth

Madhu

2020

SN Appl. Sci.

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Zirconia toughened alumina (ZTA) nanopowder was synthesized by solution combustion technique. Polymer nanocomposites were prepared using ZTA nanopowder as the reinforcement and polyvinyl alcohol (PVA) as the matrix. ZTA nanopowder composition was varied from 0 to 2.5% by weight. Structural characterization was done using scanning electron microscope (SEM) and X-ray diffraction (XRD). XRD results showed prominent, well defined peaks of zirconia and α-alumina, hence confirmed that ZTA is a crystalline material. SEM images showed that, level of agglomeration kept increasing due to increase in filler content, which might have contributed to film stiffness. Thermal analysis was carried out using differential scanning calorimetry. Addition of ZTA into PVA matrix resulted in increase in melting point as well as glass transition temperature. Influence of the nanofiller concentration on the electrical conductivity was found using Agilent 4249A impedance analyser. Conductivity measurements were carried out for all the nanocomposite films doped with ZTA and were found to exhibit insulating properties. Change in mechanical properties such as Young's modulus, tensile strength and film toughness of PVA films as a function of nano filler content are reported.

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Investigations on electronic and optical properties of Zn:CdO-PVDF polymer composite thin films

et al. 2022

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Structural mechanical and electrical property evaluation of nano cadmium oxide polyvinyl alcohol composites

Cited by 4 publications

References 20 publications

Effect of nano CdO-ZnO content on structural, thermal, optical, mechanical and electrical properties of epoxy composites

Effect of nano CdO-ZnO content on structural, thermal, optical, mechanical and electrical properties of epoxy composites

Effect of ZTA concentration on structural, thermal, mechanical and dielectric behavior of novel ZTA–PVA nanocomposite films

Investigations on electronic and optical properties of Zn:CdO-PVDF polymer composite thin films

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