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Gherasim C, Asandulesa M, Fifere N, Doroftei F, Tîmpu D, Airinei A. Structural, Optical and Dielectric Properties of Some Nanocomposites Derived from Copper Oxide Nanoparticles Embedded in Poly(vinylpyrrolidone) Matrix. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:759. [PMID: 38727353 PMCID: PMC11085425 DOI: 10.3390/nano14090759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024]
Abstract
Polymer nanocomposite films based on poly(vinyl pyrrolidone) incorporated with different amounts of copper oxide (CuO) nanoparticles were prepared by the solution casting technique. The PVP/CuO nanocomposites were analyzed by X-ray diffractometry (XRD), scanning electron microscopy, UV-Visible absorption spectroscopy and dielectric spectroscopy. The XRD analysis showed that the monoclinic structure of cupric oxide was maintained in the PVP host matrix. The key optical parameters, such as optical energy gap Eg, Urbach energy EU, absorption coefficient and refractive index, were estimated based on the UV-Vis data. The optical characteristics of the nanocomposite films revealed that their transmittance and absorption were influenced by the addition of CuO nanoparticles in the PVP matrix. Incorporation of CuO nanoparticles into the PVP matrix led to a significant decrease in band gap energy and an increase in the refractive index. The dielectric and electrical behaviors of the PVP/CuO nanocomposites were analyzed over a frequency range between 10 Hz and 1 MHz. The effect of CuO loading on the dielectric parameters (dielectric constant and dielectric loss) of the metal oxide nanocomposites was also discussed.
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Affiliation(s)
| | | | | | | | | | - Anton Airinei
- Petru Poni Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487 Iasi, Romania; (C.G.); (M.A.); (N.F.); (F.D.); (D.T.)
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Figueroa-Lopez KJ, Prieto C, Pardo-Figuerez M, Cabedo L, Lagaron JM. Development and Characterization of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Biopapers Containing Cerium Oxide Nanoparticles for Active Food Packaging Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:823. [PMID: 36903702 PMCID: PMC10004799 DOI: 10.3390/nano13050823] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Food quality is mainly affected by oxygen through oxidative reactions and the proliferation of microorganisms, generating changes in its taste, odor, and color. The work presented here describes the generation and further characterization of films with active oxygen scavenging properties made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) loaded with cerium oxide nanoparticles (CeO2NPs) obtained by electrospinning coupled to a subsequent annealing process, which could be used as coating or interlayer in a multilayer concept for food packaging applications. The aim of this work is to explore the capacities of these novel biopolymeric composites in terms of O2 scavenging capacity, as well as antioxidant, antimicrobial, barrier, thermal, and mechanical properties. To obtain such biopapers, different ratios of CeO2NPs were incorporated into a PHBV solution with hexadecyltrimethylammonium bromide (CTAB) as a surfactant. The produced films were analyzed in terms of antioxidant, thermal, antioxidant, antimicrobial, optical, morphological and barrier properties, and oxygen scavenging activity. According to the results, the nanofiller showed some reduction of the thermal stability of the biopolyester but exhibited antimicrobial and antioxidant properties. In terms of passive barrier properties, the CeO2NPs decreased the permeability to water vapor but increased the limonene and oxygen permeability of the biopolymer matrix slightly. Nevertheless, the oxygen scavenging activity of the nanocomposites showed significant results and improved further by incorporating the surfactant CTAB. The PHBV nanocomposite biopapers developed in this study appear as very interesting constituents for the potential design of new active organic recyclable packaging materials.
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Affiliation(s)
- Kelly J. Figueroa-Lopez
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain
| | - Cristina Prieto
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain
| | - Maria Pardo-Figuerez
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain
| | - Luis Cabedo
- Polymers and Advanced Materials Group (PIMA), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat s/n, 12071 Castellón, Spain
| | - Jose M. Lagaron
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Spain
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Bacterial Cellulose Composites with Polysaccharides Filled with Nanosized Cerium Oxide: Characterization and Cytocompatibility Assessment. Polymers (Basel) 2022; 14:polym14225001. [PMID: 36433128 PMCID: PMC9696978 DOI: 10.3390/polym14225001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/02/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
A new biocompatible nanocomposite film material for cell engineering and other biomedical applications has been prepared. It is based on the composition of natural polysaccharides filled with cerium oxide nanoparticles (CeONPs). The preparative procedure consists of successive impregnations of pressed bacterial cellulose (BC) with a sodium alginate (ALG) solution containing nanoparticles of citrate-stabilized cerium oxide and a chitosan (CS) solution. The presence of CeONPs in the polysaccharide composite matrix and the interaction of the nanoparticles with the polymer, confirmed by IR spectroscopy, change the network architecture of the composite. This leads to noticeable changes in a number of properties of the material in comparison with those of the matrix's polysaccharide composition, viz., an increase in mechanical stiffness, a decrease in the degree of planar orientation of BC macrochains, an increase in hydrophilicity, and the shift of the processes of thermo-oxidative destruction of the material to a low-temperature region. The latter effect is considered to be caused by the redox activity of cerium oxide (reversible transitions between the states Ce4+ and Ce3+) in thermally stimulated processes in the nanocomposite films. In the equilibrium swollen state, the material retains a mechanical strength at the level of ~2 MPa. The results of in vitro tests (cultivation of multipotent mesenchymal stem cells) have demonstrated the good biocompatibility of the BC-ALG(CeONP)-CS film as cell proliferation scaffolds.
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Baruah S, Nayak B, Puzari A. Physicochemical characterization of SnO2 grafted Poly p-phenylenediamine hybrid Nanocomposites and their enhanced antibacterial properties. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02477-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Al-Bataineh QM, Ahmad AA, Alsaad AM, Telfah AD. Optical characterizations of PMMA/metal oxide nanoparticles thin films: bandgap engineering using a novel derived model. Heliyon 2021; 7:e05952. [PMID: 33506128 PMCID: PMC7814163 DOI: 10.1016/j.heliyon.2021.e05952] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/02/2020] [Accepted: 01/07/2021] [Indexed: 11/27/2022] Open
Abstract
We synthesize and optically characterize pure PMMA and PMMA incorporated with metal oxides nanoparticles (MO NPs) such as ZnO, CuO, TiO2 and SiO2 NPs nanocomposite thin films with weight concentration of 10% using dip-coating technique. SEM images of MO NPs show that all NPs have nearly an average size of around 50 nm. The optical parameters such as, optical parameters (n and k), optoelectronics properties, dispersion, band-gap energy and band structure of as-prepared nanocomposite thin films were determined by analyzing the transmittance and reflectance spectra. Mainly, optical band-gap energy (Eg) and the thickness of thin films are evaluated to a high degree of accuracy by utilizing Q-functional derived using a mathematical model recently published. The Q(E) is a functional containing experimental transmission and reflection data and the incident photon energy. The Eg value of un-doped PMMA thin films is found to be 4.273 eV. This value decreases as pre-selected MO NPs are introduced into thin films. These values are in excellent agreement with those determined using Tauc method. The FTIR technique is employed to elucidate the vibrational bands of the nanocomposites and the intermolecular bonding between PMMA matrix and the MOs NPs. Thermal stability is investigated by employing thermogravimetric analysis (TGA) at temperatures up to 400 °C. The obtained TGA thermograms indicate that adding MOs NPs to PMMA yield thin films of better thermal stability. The obtained doped thin films show a great promise for fabricating high-efficient optoelectronic devices.
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Affiliation(s)
- Qais M Al-Bataineh
- Department of Physics, Jordan University of Science & Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Ahmad A Ahmad
- Department of Physics, Jordan University of Science & Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - A M Alsaad
- Department of Physics, Jordan University of Science & Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Ahmad D Telfah
- Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, 44139, Dortmund, Germany.,Hamdi Mango Center for Scientific Research (HMCSR), the Jordan University, Amman, 11942, Jordan
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Zhang G, Gou B, Yang Y, Liu M, Li X, Xiao L, Hao G, Zhao F, Jiang W. CuO/PbO Nanocomposite: Preparation and Catalysis for Ammonium Perchlorate Thermal Decomposition. ACS OMEGA 2020; 5:32667-32676. [PMID: 33376904 PMCID: PMC7758965 DOI: 10.1021/acsomega.0c05050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/03/2020] [Indexed: 05/24/2023]
Abstract
In this present article, we reported a facile and efficient milling method to prepare a series of CuO/PbO nanocomposite metal oxides (CuO/PbO NMOs), with CuO/PbO molar ratios of 1:2, 1:1, 1:0.5, and 1:0.25 as a potential catalyst to catalyze the thermal decomposition of ammonium perchlorate (AP). The obtained CuO/PbO NMOs were systematically characterized. X-ray diffraction (XRD), X-ray energy-dispersive spectrometry (EDS) and X-ray photoelectron spectroscopy (XPS) analyses showed that the characteristic peaks of CuO/PbO NMOs were almost the superposition of nano CuO and nano PbO, while few new weak peaks were observed resulting from the lattice defects and new structural arrangements and chemical bonds between nano CuO and nano PbO during a high-energy grinding process. Scanning electron microscopy (SEM) and transition electron microscopy (TEM) observations exhibited that the particle sizes of the CuO/PbO NMOs were distributed in the range of 10-20 nm. Thermogravimetric (TG) analysis coupled with differential scanning calorimetric (DSC) techniques verified that CuO/PbO NMOs with a CuO/PbO molar ratio of 1:1 presented the best catalytic effect for AP thermal decomposition among the other CuO/PbO NMOs, as well as the single nano CuO and nano PbO. The outstanding catalytic performance is mainly reflected as follows: shifting the peak temperature of AP in high-temperature decomposition stages from 441.3 to 347.6 °C, increasing the decomposition heat of AP from 941 to 1711 J/g, and decreasing the Gibbs free energy of AP from 199.8 to 172.1 kJ/mol, supporting the existence of a synergistic catalytic effect between nano CuO and nano PbO.
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Affiliation(s)
- Guangpu Zhang
- National
Special Superfine Powder Engineering Research Center of China, School
of Chemical Engineering, Nanjing University
of Science and Technology, Nanjing 210094, China
| | - Bingwang Gou
- Science
and Technology on Combustion and Explosion Laboratory, Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Yanpeng Yang
- Gansu
Yinguang Chemical Industry Group Co., Ltd., Baiyin 730900, China
| | - Meng Liu
- Science
and Technology on Combustion and Explosion Laboratory, Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Xiaojiang Li
- Science
and Technology on Combustion and Explosion Laboratory, Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Lei Xiao
- National
Special Superfine Powder Engineering Research Center of China, School
of Chemical Engineering, Nanjing University
of Science and Technology, Nanjing 210094, China
| | - Gazi Hao
- National
Special Superfine Powder Engineering Research Center of China, School
of Chemical Engineering, Nanjing University
of Science and Technology, Nanjing 210094, China
| | - Fengqi Zhao
- Science
and Technology on Combustion and Explosion Laboratory, Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Wei Jiang
- National
Special Superfine Powder Engineering Research Center of China, School
of Chemical Engineering, Nanjing University
of Science and Technology, Nanjing 210094, China
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