Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites
This paper presents a novel class of multiwalled carbon nanotubes (MWCNTs) and zinc oxide (ZnO) doped polyvinyl alcohol (PVA) nanocomposites prepared using coagulation and solvent casting method. The dopant, ZnO nanoparticles, was prepared using precipitation method, and another dopant, MWCNTs, was...
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doaj-917982c216974c3b9781c9bf584dcb322021-09-06T19:21:10ZengDe GruyterNanotechnology Reviews2191-90892191-90972015-10-014545746710.1515/ntrev-2015-0020Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocompositesKumar N.B. Rithin0Crasta Vincent1Praveen B.M.2Kumar Mohan3Department of Physics, Srinivas School of Engineering, Mukka, Mangalore, Karnataka, IndiaDepartment of Physics, St Joseph Engineering College, Vamanjoor, Mangalore, Karnataka, IndiaDepartment of Chemistry, Srinivas School of Engineering, Mukka, Mangalore, Karnataka, IndiaDepartment of Mechanical Engineering, Srinivas School of Engineering, Mukka, Mangalore, Karnataka, IndiaThis paper presents a novel class of multiwalled carbon nanotubes (MWCNTs) and zinc oxide (ZnO) doped polyvinyl alcohol (PVA) nanocomposites prepared using coagulation and solvent casting method. The dopant, ZnO nanoparticles, was prepared using precipitation method, and another dopant, MWCNTs, was treated with H2SO4 and HNO3 taken in 3:1volume ratio to create carboxylated MWCNTs. Furthermore, prepared ZnO and treated MWCNTs were doped into PVA matrix to prepare PVA nanocomposites by solvent casting technique. The Fourier transform infrared (FTIR) spectra detect the irregular shift in the bands of doped PVA nanocomposites indicating the presence of intra/intermolecular hydrogen bonding creating the interaction between the nanoparticles and neighboring OH group of PVA. Crystallinity of the prepared nanocomposites films was investigated using XRD technique, which explores the average particle size of the embedded nanoparticles and explains the complex formation and variation in crystallinity of the nanocomposites due to interaction of dopants. The decrease in optical energy band gap of nanocomposite films and the information of Urbach energy (Eu) were assessed by UV/vis spectroscopy. By using a universal testing machine, the mechanical properties of doped polymer films found escalation for doping percentage concentration x=7.5 wt%. The phase homogeneity, film morphology, and chemical configuration of the nanocomposites were inspected using atomic force microscope, scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively.https://doi.org/10.1515/ntrev-2015-0020dopantnanocomposites pva |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kumar N.B. Rithin Crasta Vincent Praveen B.M. Kumar Mohan |
spellingShingle |
Kumar N.B. Rithin Crasta Vincent Praveen B.M. Kumar Mohan Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites Nanotechnology Reviews dopant nanocomposites pva |
author_facet |
Kumar N.B. Rithin Crasta Vincent Praveen B.M. Kumar Mohan |
author_sort |
Kumar N.B. Rithin |
title |
Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites |
title_short |
Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites |
title_full |
Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites |
title_fullStr |
Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites |
title_full_unstemmed |
Studies on structural, optical and mechanical properties of MWCNTs and ZnO nanoparticles doped PVA nanocomposites |
title_sort |
studies on structural, optical and mechanical properties of mwcnts and zno nanoparticles doped pva nanocomposites |
publisher |
De Gruyter |
series |
Nanotechnology Reviews |
issn |
2191-9089 2191-9097 |
publishDate |
2015-10-01 |
description |
This paper presents a novel class of multiwalled carbon nanotubes (MWCNTs) and zinc oxide (ZnO) doped polyvinyl alcohol (PVA) nanocomposites prepared using coagulation and solvent casting method. The dopant, ZnO nanoparticles, was prepared using precipitation method, and another dopant, MWCNTs, was treated with H2SO4 and HNO3 taken in 3:1volume ratio to create carboxylated MWCNTs. Furthermore, prepared ZnO and treated MWCNTs were doped into PVA matrix to prepare PVA nanocomposites by solvent casting technique. The Fourier transform infrared (FTIR) spectra detect the irregular shift in the bands of doped PVA nanocomposites indicating the presence of intra/intermolecular hydrogen bonding creating the interaction between the nanoparticles and neighboring OH group of PVA. Crystallinity of the prepared nanocomposites films was investigated using XRD technique, which explores the average particle size of the embedded nanoparticles and explains the complex formation and variation in crystallinity of the nanocomposites due to interaction of dopants. The decrease in optical energy band gap of nanocomposite films and the information of Urbach energy (Eu) were assessed by UV/vis spectroscopy. By using a universal testing machine, the mechanical properties of doped polymer films found escalation for doping percentage concentration x=7.5 wt%. The phase homogeneity, film morphology, and chemical configuration of the nanocomposites were inspected using atomic force microscope, scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. |
topic |
dopant nanocomposites pva |
url |
https://doi.org/10.1515/ntrev-2015-0020 |
work_keys_str_mv |
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