Poly(Vinyl Chloride) Spheres Coated with Graphene Oxide Sheets: From Synthesis to Optical Properties and Their Applications as Flame-Retardant Agents

Baibarac, M.; Stingescu, Luiza; Stroe, Malvina; Negrilă, Cătălin; Matei, Elena; Cotet, Liviu Cosmin; Anghel, Ion; Şofran, Ioana E; Baia, Lucian

doi:10.3390/polym13040565

Cited by 20 publications

(8 citation statements)

References 47 publications

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“…The XPS spectra of binding energies for carbon bonds (C1s XPS region) in PVC samples are shown in Figure 7 . Four C1s fitting peaks are identified in PVC at 284.8 eV (C–C/C–H), 286.3 eV (C–Cl), 284 eV (C=C), and 288.1 eV (C-O) ( Wang et al, 2015 ; Fu et al, 2019 ; Baibarac et al, 2021 ). The PVC nanocomposites present another XPS peak at 287.5 eV from C-N bonds, shifting the XPS signal from C-O bonds to 289–290 eV.…”

Section: Resultsmentioning

confidence: 99%

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PVC containing silver nanoparticles with antimicrobial properties effective against SARS-CoV-2

et al. 2023

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Poly (vinyl chloride) (PVC) is commonly used to manufacture biomedical devices and hospital components, but it does not present antimicrobial activity enough to prevent biofouling. With the emergence of new microorganisms and viruses, such as Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) that was responsible for the global pandemic caused by Coronavirus Disease 2019 (COVID-19), it is evident the importance of the development of self-disinfectant PVC for hospital environments and medical clinics where infected people remain for a long time. In this contribution, PVC nanocomposites with silver nanoparticles (AgNPs) were prepared in the molten state. AgNPs are well-known as antimicrobial agents suitable for designing antimicrobial polymer nanocomposites. Adding 0.1 to 0.5 wt% AgNPs significantly reduced Young’s modulus and ultimate tensile strength of PVC due to the emergence of microstructural defects in the PVC/AgNP nanocomposites, but the impact strength did not change significantly. Furthermore, nanocomposites have a higher yellowness index (YI) and lower optical bandgap values than PVC. The PVC/AgNP nanocomposites present virucidal activity against SARS-CoV-2 (B.1.1.28 strain) within 48 h when the AgNP content is at least 0.3 wt%, suitable for manufacturing furniture and hospital equipment with self-disinfectant capacity to avoid secondary routes of COVID-19 contagion.

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Section: Resultsmentioning

confidence: 99%

“…The XPS spectra peak-fittings were performed in CasaXPS version 2.3.25, using U 2 Tougaard background approximation and finite Lorentzian asymmetric (LF) lineshape (with relative sensitivity factors = 1). XPS spectra were calibrated to give C-C/C-H binding energy (C1s region) of 284.8 eV ( Baibarac et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

PVC containing silver nanoparticles with antimicrobial properties effective against SARS-CoV-2

et al. 2023

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“…The results showed that the smoke suppression effect of the sixth group was the best, and the D value of the sixth group was decreased by 46.7% compared with that of the 100% Sb 2 O 3 group, and the smoke suppression effect was evident after adding the new flame retardant [13]. The zinc borate exhibited a synergistic effect when combined with traditional flame retardants, which could significantly improve the flame retardancy and smoke suppression performance [14]. Therefore, after replacing most of the Sb 2 O 3 , the smoke suppression performance of the PVC composite was excellent.…”

Section: Smoke Density Test Of Pvc Compositesmentioning

confidence: 96%

The Flame Retardancy and Smoke Suppression Performance of Polyvinyl Chloride Composites with an Efficient Flame Retardant System

Chen,

Wu,

et al. 2023

Coatings

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Polyvinyl chloride (PVC) is the most widely used general flame-retardant plastic worldwide; however, the large number of plasticizers added during processing significantly reduces its flame-retardant property. To prepare a new type of PVC material with highly efficient flame retardancy and smoke suppression, antimony trioxide (Sb2O3), talc powder, hydromagnesite, and zinc borate were added in different proportions to PVC to explore the flame-retardant properties, thermal weight, smoke density (Ds), and mechanical properties of the composite materials. Results showed that the limiting oxygen index value of each group was higher than 27% after adding talc powder, magnesite, and zinc borate to replace part of the Sb2O3. This value was within the refractory-grade level and indicated a good flame retardancy performance. The replacement effect was in line with the experimental expectation. The lowest Ds peak value was 656.4 when the flame retardants were added with 10 wt% Sb2O3, 50 wt% hydromagnesite, 20 wt% talc, and 20 wt% Zn3BO6. Compared with pure Sb2O3 as a flame retardant, the Ds peak value decreased by 46.7%. The thermogravimetric decomposition temperature of the composites in each group was generally higher than that of the group with pure Sb2O3 as a flame retardant, increasing by 45.3 °C. The thermal stability of the composites was improved, and the elongation at the break and tensile strength were 234.9% and 25.8 MPa, respectively, indicating good mechanical properties. The results showed that using compound flame retardants to replace most of the Sb2O3 is an effective technique for obtaining good flame retardancy and mechanical properties of PVC. This study, not only reduced the manufacturing cost of flame-retardant PVC, but also effectively reduced its smoke density and the time to reach the highest smoke density, which provided a research reference for the application and promotion of flame-retardant PVC.

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“…The nature and concentration of nanofillers, as well as the bond between the nanofiller molecules and the polymer matrix, strongly influence the electron transport through the system. Most investigations have been devoted to the development of polymer nanocomposites with MWCNTs [27][28][29][30][31][32], Gr [33][34][35], and GrO [36,37]. Until now, only a few papers have discussed composites of PVC/SWCNTs [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl chloride)/Nanocarbon Composites for Advanced Potentiometric Membrane Sensor Design

Zhizhin,

Turyshev,

Shpigun

et al. 2024

IJMS

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Polymer nanocomposites filled with carbon nanoparticles (CNPs) are a hot topic in materials science. This article discusses the current research on the use of these materials as interfacial electron transfer films for solid contact potentiometric membrane sensors (SC-PMSs). The results of a comparative study of plasticized poly (vinyl chloride) (pPVC) matrices modified with single-walled carbon nanotubes (SWCNTs), fullerenes-C60, and their hybrid ensemble (SWCNTs-C60) are reported. The morphological characteristics and electrical conductivity of the prepared nanostructured composite films are reported. It was found that the specific electrical conductivity of the pPVC/SWCNTs-C60 polymer film was higher than that of pPVC filled with individual nanocomponents. The effectiveness of this composite material as an electron transfer film in a new potentiometric membrane sensor for detecting phenylpyruvic acid (in anionic form) was demonstrated. Screening for this metabolic product of phenylalanine in body fluids is of significant diagnostic interest in phenylketonuria (dementia), viral hepatitis, and alcoholism. The developed sensor showed a stable and fast Nernstian response for phenylpyruvate ions in aqueous solutions over the wide linear concentration range of 5 × 10−7–1 × 10−3 M, with a detection limit of 10−7.2 M.

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Poly(Vinyl Chloride) Spheres Coated with Graphene Oxide Sheets: From Synthesis to Optical Properties and Their Applications as Flame-Retardant Agents

Cited by 20 publications

References 47 publications

PVC containing silver nanoparticles with antimicrobial properties effective against SARS-CoV-2

PVC containing silver nanoparticles with antimicrobial properties effective against SARS-CoV-2

The Flame Retardancy and Smoke Suppression Performance of Polyvinyl Chloride Composites with an Efficient Flame Retardant System

Poly(vinyl chloride)/Nanocarbon Composites for Advanced Potentiometric Membrane Sensor Design

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