TY - JOUR
T1 - Development of Zn1−xBaxO nanoparticles reinforced poly(vinyl alcohol) macromolecular nanocomposite films
T2 - Eco-friendly integrated materials for optical systems
AU - Chandrappa, Halli
AU - Bhajantri, Rajashekhar Fakeerappa
AU - Ismayil, null
AU - Ganesha, Kaliyur Nanjundaiah
N1 - Funding Information:
One of the authors (Chandrappa) would like to thank Dr. L. A. Shashtri, assistant professor, P.G. Department of Studies in Chemistry, Karnatak University - Dharwad for assistance and support in writing up reaction mechanism of the composite materials. The authors would like to thank the Director and the staff of University Scientific and Instruments Centre (USIC), Sophisticated Analytical Instrument Facility (SAIF) and DST (PURSE), Karnatak University, Dharwad for the UV–Visible, DSC, XRD and ATR-IR experimental measurement facilities. The authors also thank the staff, Central Instrumentation Facility (CIF), MIT - Manipal for extending XRD data.
Funding Information:
Science and Engineering Research Board, Department of Science and Technology, Government of India, New Delhi, Grant/Award Number: SB/EMEQ‐089/2013; Karnataka State Higher Education Council, Govt. of Karnataka, Grant/Award Number: RUSA1.0 grant (KSHEC/254/KUD/15‐16/544); University Grants Commission, Grant/Award Number: SAP‐CAS Phase‐II programme (F.530/9/CAS‐II/2015(SAP‐I) Funding information
Publisher Copyright:
© 2022 Wiley Periodicals LLC.
PY - 2022/9/10
Y1 - 2022/9/10
N2 - In this paper, we report the synthesis of Ba doped ZnO (Zn1−xBaxO, [x = 0.05]) nanoparticles (NPs) with a polycrystalline hexagonal wurtzite structure using chemical co-precipitation method and prepared optically transparent, high refractive index polymer nanocomposite films by incorporating Zn1−xBaxO into poly(vinyl alcohol) (PVA) matrix. The average crystallite size of 104 nm was estimated by Scherrer's formula from X-ray diffraction (XRD) patterns. The crystallinity of the composite film is significantly increased when Zn1−xBaxO NPs are added. The basic principles and theoretical aspects of scattering, transparency and refractive index of the composite structures are discussed. The formation of Zn-Ba-O inter metallic bond was confirmed by the IR peaks that appear at the spectral wavenumbers (⁓596–608) cm−1. ATR-FTIR spectral transmittance strongly proves the intermolecular interactions that occur in the composite film with molecular modification and various functional group impressions. UV–Vis absorption spectrum demonstrates a strong absorption edge around 379 nm owing to oxygen species corresponding to Zn-Ba-O nanostructures in the composite films. The developed polymer composite films yielded strikingly higher RI value of ⁓(n = 2.5) having Abbe's number (υD = 10) with 57% plus transparency for 5 wt% NPs (ZBP-3) with sufficiently low extinction coefficient values (k⁓10−4). Optical conductivity (σopt) was found to elevate from σopt ⁓ (4.465 × 1010) s−1 for pristine PVA to a σopt ⁓ (1.309 × 1012) s−1 for 5 wt% Zn0.95Ba0.05O filled composite films. Differential scanning calorimetry analysis showed a significant increase in the Tg value. The significant increase in Tm and Td > 311°C values indicates excellent thermal stability. Hence, the nanocomposite films demonstrated an integrated system of excellent refractive index, considerable visual transparency and excellent thermal stability, establishing their potential for use as a wider spectrum of optical system requirements.
AB - In this paper, we report the synthesis of Ba doped ZnO (Zn1−xBaxO, [x = 0.05]) nanoparticles (NPs) with a polycrystalline hexagonal wurtzite structure using chemical co-precipitation method and prepared optically transparent, high refractive index polymer nanocomposite films by incorporating Zn1−xBaxO into poly(vinyl alcohol) (PVA) matrix. The average crystallite size of 104 nm was estimated by Scherrer's formula from X-ray diffraction (XRD) patterns. The crystallinity of the composite film is significantly increased when Zn1−xBaxO NPs are added. The basic principles and theoretical aspects of scattering, transparency and refractive index of the composite structures are discussed. The formation of Zn-Ba-O inter metallic bond was confirmed by the IR peaks that appear at the spectral wavenumbers (⁓596–608) cm−1. ATR-FTIR spectral transmittance strongly proves the intermolecular interactions that occur in the composite film with molecular modification and various functional group impressions. UV–Vis absorption spectrum demonstrates a strong absorption edge around 379 nm owing to oxygen species corresponding to Zn-Ba-O nanostructures in the composite films. The developed polymer composite films yielded strikingly higher RI value of ⁓(n = 2.5) having Abbe's number (υD = 10) with 57% plus transparency for 5 wt% NPs (ZBP-3) with sufficiently low extinction coefficient values (k⁓10−4). Optical conductivity (σopt) was found to elevate from σopt ⁓ (4.465 × 1010) s−1 for pristine PVA to a σopt ⁓ (1.309 × 1012) s−1 for 5 wt% Zn0.95Ba0.05O filled composite films. Differential scanning calorimetry analysis showed a significant increase in the Tg value. The significant increase in Tm and Td > 311°C values indicates excellent thermal stability. Hence, the nanocomposite films demonstrated an integrated system of excellent refractive index, considerable visual transparency and excellent thermal stability, establishing their potential for use as a wider spectrum of optical system requirements.
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U2 - 10.1002/app.52791
DO - 10.1002/app.52791
M3 - Article
AN - SCOPUS:85134190777
SN - 0021-8995
VL - 139
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 34
M1 - e52791
ER -