Browsing by Author "Popelka, A."
Now showing items 1-20 of 42
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Accelerated weathering effects on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV/TiO2 nanocomposites
Antunes, A.; Popelka, A.; Aljarod, O.; Hassan, M.K.; Kasak, P.; Luyt, A.S.... more authors ... less authors ( MDPI AG , 2020 , Article)The effect of accelerated weathering on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV-based nanocomposites with rutile titanium (IV) dioxide (PHBV/TiO2) was investigated. The accelerated weathering test ... -
Adhesive properties of polyester treated by cold plasma in oxygen and nitrogen atmospheres
Novak, I.; Popelka, A.; Luyt, A.S.; Chehimi, M.M.; Spirkova, M.; Janigova, I.; Kleinova, A.; Stopka, P.; Vanko, V.; Chodak, I.; Valentin, M.; Slouf, M.... more authors ... less authors (2013 , Article)Polyester foil was treated by the surface diffuse barrier discharge (SDBD) plasma at atmospheric pressure in oxygen and/or in nitrogen containing a small amount of oxygen to improve its surface and adhesive properties. ... -
Antibacterial treatment of LDPE with halogen derivatives via cold plasma
Popelka, A.; Novak, I.; Lehocky, M.; Bilek, F.; Kleinova, A.; Mozeti?, M.; Spirkova, M.; Chodak, I.... more authors ... less authors ( BME-PT and GTE , 2015 , Article)The factor limiting the application of low-density polyethylene (LDPE) in healthcare is its high susceptibility to bacterial growth. For this reason, we here investigated antibacterial treatments of LDPE foils using ... -
Antimicrobial modification of PLA scaffolds with ascorbic and fumaric acids via plasma treatment
Popelka, A.; Abdulkareem, A.; Mahmoud, A.A.; Nassr, M.G.; Al-Ruweidi, M.K.A.A.; Mohamoud, K.J.; Hussein, M.K.; Lehocky, M.; Vesela, D.; Humpolicek, P.; Kasak, P.... more authors ... less authors ( Elsevier B.V. , 2020 , Article)An optimal medical scaffold should be biocompatible and biodegradable and should have adequate mechanical properties and scaffold architecture porosity, a precise three-dimensional shape, and a reasonable manufacturing ... -
Chemically synthesized carbon nanorods with dual polarized emission
Xiong Y.; Zhang X.; Richter A.F.; Li Y.; Döring A.; Kasák P.; Popelka A.; Schneider J.; Kershaw S.V.; Yoo S.J.; Kim J.-G.; Zhang W.; Zheng W.; Ushakova E.V.; Feldmann J.; Rogach A.L.... more authors ... less authors ( American Chemical Society , 2019 , Article)We realized the synthesis of carbon nanorods—monodisperse colloidal particles with a length of 50 nm and a width of 20 nm—which can be considered an addition to the family of light-emitting carbon-based nanostructures. ... -
Dry sliding tribological properties of a hard anodized aa6082 aluminum alloy
Santecchia, E.; Cabibbo, M.; Hamouda, A.M.S.; Musharavati, F.; Popelka, A.; Spigarelli, S.... more authors ... less authors ( MDPI AG , 2020 , Article)The applications of aluminum and its alloys are still limited by low hardness and low wear resistance properties. Surface modifications, such anodizing and plasma electrolytic oxidation, represent a feasible way to overcome ... -
Eco-friendly foam biocomposites based on cellulose extracted from date palm leaves and low-density polyethylene
Maria H.J.; Luyt A.S.; Popelka A.; Nzihou A.; Egorov V.V.; Krupa I.; Al-Ali Al-Maadeed M.A.S.; Thomas S.... more authors ... less authors ( Web Portal IOP , 2020 , Article)The design of composite materials using environmentally compatible materials and adopting sustainable preparation techniques is very necessary for a better environment. The present study is a step towards developing an ... -
Effect of corona treatment on adhesion enhancement of LLDPE
Popelka A.; Nov?k I.; Al-Maadeed M.A.S.A.; Ouederni M.; Krupa I. ( Elsevier B.V. , 2018 , Article)Polymers/metal laminates are often used to improve physical and mechanical properties, especially those required in building applications. A flat aluminum composite panel (ACP) consisted mainly of two thin metal sheets ... -
Effect of humidity on the electrical properties of the silver polyaniline/polyvinyl alcohol nanocomposites
Bhadra J.; Popelka A.; Abdulkareem A.; Lehocky M.; Humpolicek P.; Al-Thani N.... more authors ... less authors ( Elsevier B.V. , 2019 , Article)Polymer-metal nanocomposites with enhanced mechanical, optical, electrical, dielectric, and antimicrobial properties are currently in high demand for many industrial applications. Here, we study and present the effect of ... -
Effect of plasma treatment on accelerated pla degradation
Antunes, A.; Luyt, A. S.; Kasak, P.; Aljarod, O.; Hassan, M. K.; Popelka, A.... more authors ... less authors ( BME-PT and GTE , 2021 , Article)Poly(lactic acid) (PLA) has been found to be important in various applications, such as in the medical, pharma-ceutical, and packaging industries. However, the long-term associated degradation process of PLA is a limiting ... -
Effect of plasma treatment on accelerated pla degradation
Antunes, A.; Luyt, A.S.; Kasak, P.; Aljarod, O.; Hassan, M.K.; Popelka, A.... more authors ... less authors ( BME-PT and GTE , 2021 , Article)Poly(lactic acid) (PLA) has been found to be important in various applications, such as in the medical, pharma-ceutical, and packaging industries. However, the long-term associated degradation process of PLA is a limiting ... -
Effect of poly(ε-caprolactone) and titanium (IV) dioxide content on the UV and hydrolytic degradation of poly(lactic acid)/poly(ε-caprolactone) blends
Luyt, A. S.; Antunes, A.; Popelka, A.; Mahmoud, A.; Hassan, M. K.; Kasak, P.... more authors ... less authors ( John Wiley and Sons Inc , 2021 , Article)The effect of accelerated weathering degradation on the properties of poly(lactic acid) (PLA)/poly(ε-caprolactone) (PCL) blends and PLA/PCL/titanium (IV) dioxide (TiO2) nanocomposites are presented in this paper. The results ... -
Effects of rutile-TiO2 nanoparticles on accelerated weathering degradation of poly(Lactic Acid)
Antunes, A.; Popelka, A.; Aljarod, O.; Hassan, M. K.; Luyt, A.S. ( MDPI AG , 2020 , Article)The effect of accelerated weathering on poly(lactic acid) (PLA) and a PLA nanocomposite with rutile titanium (IV) dioxide (rutile-TiO2) was investigated. The accelerated weathering test applied consecutive steps of ultraviolet ... -
Electrically conductive electrospun polymeric mats for sensing dispersed vegetable oil impurities inwastewater
Moghaddasi A.; Sobolciak P.; Popelka A.; Sadasivuni K.K.; Spitalsky Z.; Krupa I.... more authors ... less authors ( MDPI AG , 2019 , Article)This paper addresses the preparation of electrically conductive electrospun mats on a base of styrene-isoprene-styrene copolymer (SIS) and multiwall carbon nanotubes (CNTs) and their application as active sensing elements ... -
Electrochemical surface activation of commercial tungsten carbide for enhanced electrocatalytic hydrogen evolution and methanol oxidation reactions
Bin Yousaf, A.; Kveton, F.; Blsakova, A.; Popelka, A.; Tkac, J.; Kasak, P.... more authors ... less authors ( Elsevier B.V. , 2022 , Article)The chemistry of electrocatalysts deals with multiple critical factors to facilitate the electrochemical reactions. Among those, the rate limiting depends on electrons transfer for chemisorptions of molecules in redox ... -
Electrospun Copolyamide Mats Modified by Functionalized Multiwall Carbon Nanotubes
Sobolciak P.; Tanvir A.; Popelka A.; Spitalsky Z.; Mrlik M.; Krupa I.... more authors ... less authors ( John Wiley and Sons Inc. , 2019 , Article)In this article, we report the preparation and properties of electro-conductive mats based on the commercial copolyamide (Vestamelt X1010) and multiwall carbon nanotubes functionalized by amino groups. Vestamelt X1010 is ... -
Electrospun Polystyrene/PANI-Ag fibers for organic dye removal and antibacterial application
Bhadra, J.; Parangusan, H.; Popelka, A.; Lehocky, M.; Humpolicek, P.; Al-Thani, N.... more authors ... less authors ( Elsevier Ltd , 2020 , Article)Herein we report superior dye-degradation performance for polyaniline-silver (PANI-Ag) nanoparticle coated on polystyrene (PS) electrospun membrane by in situ-polymerization method. Morphological study of the coated membrane ... -
Experimental prediction of the elastic properties of nanocomposite cementitious materials based on nanoindentation measurements
Taqa, A.G.A.; Al-Rub, R.K.A.; Senouci, A.; Popelka, A.; Al-Nuaimi, N.; Bani-Hani, K.A.... more authors ... less authors ( American Scientific Publishers , 2017 , Article)This paper provides in depth novel exploration of the local mechanical properties of nanocomposite cement using the nanoindentation technique. The elastic properties of carbon nanotubes (CNTs)-reinforced and unreinforced ... -
Fabrication of flexible electrically conductive polymer-based micropatterns using plasma discharge
Popelka, A.; Bhadra, J.; Abdulkareem, A.; Kasak, P.; Spitalsky, Z.; Jang, S.W.; Al-Thani, N.... more authors ... less authors ( Elsevier B.V. , 2020 , Article)In this work, laboratory prepared PANI and it's composite with carbon nanotubes (PANI/CNTs) were used for the fabrication of micropatterns on flexible polyethylene terephthalate (PET) substrate using the drop cast method ... -
Foamy phase change materials based on linear low-density polyethylene and paraffin wax blends
Popelka, A.; Sobolciak, P.; Mrlik, M.; Nogellova, Z.; Chodak, I.; Ouederni, M.; Al-Maadeed, M.A.; Krupa, I.... more authors ... less authors ( Springer Nature , 2018 , Article)Foamy phase-change materials (FPCMs) based on linear low-density polyethylene (LLDPE) blended with 30 wt.% of paraffin wax (W) were successfully prepared for the first time. The advantage of these materials is their double ...