Polymer composites prepared by low-temperature post-irradiation polymerization of C<sub>2</sub>F<sub>4</sub> in the presence of graphene-like material: synthesis and characterization

Shul’ga, Yu. M.; Василец, В. Н.; Kiryukhin, D. P.; Voylov, Dmitry; Sokolov, Alexei P.

doi:10.1039/c4ra09074h

Cited by 23 publications

(8 citation statements)

References 49 publications

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“…To determine the DG in PMMA–g–PTFE, TGA was exerted. As shown in Figure 2 , the degradation temperature range of pristine PTFE is 490–610 °C while that for PMMA is 180–420 °C, in good agreement with previous reports [ 51 , 52 ]. It is clear that the degradation of PMMA and PTFE are independent from each other.…”

Section: Resultssupporting

confidence: 91%

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

et al. 2018

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Decreasing the surface energy of polyacrylate-based materials is important especially in embossed holography, but current solutions typically involve high-cost synthesis or encounter compatibility problems. Herein, we utilize the grafting of polytetrafluoroethylene (PTFE) micropowder with poly (methyl methacrylate) (PMMA). The grafting reaction is implemented via in situ electron beam irradiation-induced polymerization in the presence of fluorinated surfactants, generating PMMA grafted PTFE micropowder (PMMA–g–PTFE). The optimal degree of grafting (DG) is 17.8%. With the incorporation of PMMA–g–PTFE, the interfacial interaction between polyacrylate and PTFE is greatly improved, giving rise to uniform polyacrylate/PMMA–g–PTFE composites with a low surface energy. For instance, the loading content of PMMA–g–PTFE in polyacrylate is up to 16 wt %, leading to an increase of more than 20 degrees in the water contact angle compared to the pristine sample. This research paves a way to generate new polyacrylate-based films for embossed holography.

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Section: Resultssupporting

confidence: 91%

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

et al. 2018

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“…The XRD pattern of the PAN nanofiber mat reveals a broad peak at the 2θ value of near 21° owing to the amorphous structure, which agrees well with the previous reports. , For the Cu microfiber mat, discernible diffraction peaks were observed at the 2θ values of 43.5°, 50.5°, and 61.4° that correspond to the (111), (200), and (220) planes of Cu, respectively. That indicates that the Cu electroplated on the surface of PAN nanofibers was not oxidized. , In the case of the PTFE (Teflon) mesh, one strong and three weak peaks appeared at the 2θ values of 17.7°, 31.8°, 37.1°, and 41.6°. , A broad peak associated with the amorphous PTFE structure was also exhibited at the 2θ value of 16.3°. , …”

Section: Resultsmentioning

confidence: 92%

“…31,32 In the case of the PTFE (Teflon) mesh, one strong and three weak peaks appeared at the 2θ values of 17.7°, 31.8°, 37.1°, and 41.6°. 33,34 A broad peak associated with the amorphous PTFE structure was also exhibited at the 2θ value of 16.3°. 33,35 Figure 3b shows the results of Raman spectral analysis of each specimen.…”

Section: Resultsmentioning

confidence: 92%

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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Numerous threats to human health and ecosystems on earth exist due to air pollution and the spread of fatal diseases. Airborne pollutants and particulate matter (PM) pose serious public health risks. In addition, the emergence and spread of bacterial and viral diseases constantly threaten public health and safety. Although various approaches have been implemented thus far to protect humans from air pollution and exposure to diseases, several challenges remain to be addressed. In this study, we developed a hybrid air filter consisting of filtration, heating, and thermal insulation layers. The air filtration layer can effectively capture airborne PM1 particles (less than 1.0 μm in diameter). Furthermore, the heating layer enables the hybrid air filter to generate temperatures above 100 °C, and the insulation layer prevents the heat from being transferred to the other side (e.g., the human skin, if the hybrid air filter is used in a facemask). Since several bacteria and viruses are incapacitated under high temperatures, this hybrid air filter holds great promise for antibacterial and antiviral protection.

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“…Polytetrafluoroethylene (PTFE) is a polymer with superior chemical inertness, excellent thermal stability, low friction property and good biocompatibility . On the basis of these outstanding properties, PTFE fibers have been processed into fabrics or felts for further applications such as filtration, biomedical products and seawater desalination .…”

Section: Introductionmentioning

confidence: 99%

A comparative study of characteristics of polytetrafluoroethylene fibers manufactured by various processes

Huang

Jin

2016

J of Applied Polymer Sci

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A series of polytetrafluoroethylene (PTFE) fibers were manufactured by three processing methods including extrusion process, split‐sheet process and split‐film process. The influence of processing methods on fiber properties were systematically studied using four PTFE powders with various molecular weights (3.86 × 107, 4.71 × 107, 4.92 × 107 and 5.11 × 107, respectively). Morphology, crystallinity, tensile behavior and friction properties of PTFE fibers were compared by scanning electron micrograph, X‐ray diffraction pattern, strength‐elongation curves and friction coefficients, respectively. The results showed that the in terms of flat filaments, mechanical properties became weak with the increase of molecular weight of PTFE powders at first, but were improved dramatically with further enhancement of molecular weight. In the case of both round filaments and split‐film fibers, fiber properties were improved with growth of molecular weight. Based on characteristics and friction coefficients, potential applications of three types of PTFE samples were analyzed. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43553.

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Polymer composites prepared by low-temperature post-irradiation polymerization of C₂F₄ in the presence of graphene-like material: synthesis and characterization

Abstract: Study of PTFE–microwave exfoliated graphene oxide (MEGO) composites synthesized using a low temperature post-irradiation polymerization technique. SEM images of MEGO (left) and PTFE–MEGO composite (right).

Cited by 23 publications

References 49 publications

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

A comparative study of characteristics of polytetrafluoroethylene fibers manufactured by various processes

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Polymer composites prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of graphene-like material: synthesis and characterization

Abstract: Study of PTFE–microwave exfoliated graphene oxide (MEGO) composites synthesized using a low temperature post-irradiation polymerization technique. SEM images of MEGO (left) and PTFE–MEGO composite (right).

Cited by 23 publications

References 49 publications

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization

Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

A comparative study of characteristics of polytetrafluoroethylene fibers manufactured by various processes

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Polymer composites prepared by low-temperature post-irradiation polymerization of C₂F₄ in the presence of graphene-like material: synthesis and characterization