TY - JOUR AU - Ferdinánd, Milán László AU - Jerabek, M. AU - Várdai, Róbert AU - Pregi, Emese AU - Lummerstorfer, T. AU - Gahleitner, M. AU - Faludi, Gábor AU - Móczó, János AU - Pukánszky, Béla TI - Factors and processes determining the impact resistance of PP impact copolymers with multi-phase structure JF - EXPRESS POLYMER LETTERS J2 - EXPRESS POLYM LETT VL - 18 PY - 2024 IS - 4 SP - 406 EP - 419 PG - 14 SN - 1788-618X DO - 10.3144/expresspolymlett.2024.30 UR - https://m2.mtmt.hu/api/publication/34676085 ID - 34676085 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, HUN-REN, Magyar Tudósok Körútja 2, Budapest, H-1117, Hungary Borealis Polyolefine GmbH, St.-Peter-Strasse 25, Linz, A-4021, Austria Export Date: 23 February 2024 Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3, Hungary; email: ferdinandmilanlaszlo@edu.bme.hu Funding details: Hungarian Scientific Research Fund, OTKA, FK 129270 Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding text 1: The significant help ofSzabolcs Kalmár insample preparation and characterization is highly appreciated . The authors acknowled ge the financial support of the ÚNKP-23-3-II-BME-89 New National Excellence Program ofthe Ministry for Culture and Innovation from the source of the National Research, Development and Innovation Fund , the Comet program ofAustria and that ofthe National Scientific Research Fund ofHungary (OTKA Grant No. FK 129270) for this project onthe modificationofpolymeric materials. Funding text 2: The significant help of Szabolcs Kalmár in sample preparation and characterization is highly appreciated. The authors acknowledge the financial support of the ÚNKP-23-3-II-BME-89 New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research, Development and Innovation Fund, the Comet program of Austria and that of the National Scientific Research Fund of Hungary (OTKA Grant No. FK 129270) for this project on the modification of polymeric materials. AB - The impact resistance of four polypropylene impact copolymers (ICPs) with multi-phase structures and widely differing characteristics was related to their structure. Blends were prepared from one of them and a high-density polyethylene (HDPE) to improve impact strength further. The structure of the materials was characterized by microscopy and dynamic mechanical thermal analysis. Mechanical properties were determined by tensile and impact testing, while local deformation processes were followed by volume strain measurements. The results obtained in the study proved that the shear-yielding of the matrix contributes the most among local processes to the increase of impact strength, while cavitation has a small effect on this latter property since its energy absorption is negligible. Both increasing elastomer content and decreasing particle size favor shear-yielding, thus improving impact strength. Considering the importance of elastomer content and elastomer particle size, a simple but very good model was created describing the dependence of the impact strength of ICPs on these latter two factors by using linear regression analysis. Although the addition of HDPE increases the fracture resistance of ICPs further, the extent of improvement is moderate, and the approach is economically disadvantageous. © BME-PT. LA - English DB - MTMT ER - TY - JOUR AU - Yi, Lan AU - Cui, Lu AU - Cheng, Linrui AU - Móczó, János AU - Pukánszky, Béla TI - Levocetirizine-Loaded Electrospun Fibers from Water-Soluble Polymers: Encapsulation and Drug Release JF - MOLECULES J2 - MOLECULES VL - 28 PY - 2023 IS - 10 PG - 14 SN - 1420-3049 DO - 10.3390/molecules28104188 UR - https://m2.mtmt.hu/api/publication/33999330 ID - 33999330 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Budapest, H-1521, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Budapest, H-1519, Hungary Export Date: 8 June 2023 CODEN: MOLEF Correspondence Address: Móczó, J.; Laboratory of Plastics and Rubber Technology, Hungary; email: moczo.janos@ttk.hu AB - Electrospun fibers containing levocetirizine, a BCS III drug, were prepared from three water-soluble polymers, hydroxypropyl methylcellulose (HPMC), polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA). Fiber-spinning technology was optimized for each polymer separately. The polymers contained 10 wt% of the active component. An amorphous drug was homogeneously distributed within the fibers. The solubility of the drug in the polymers used was limited, with a maximum of 2.0 wt%, but it was very large in most of the solvents used for fiber spinning and in the dissolution media. The thickness of the fibers was uniform and the presence of the drug basically did not influence it at all. The fiber diameters were in the same range, although somewhat thinner fibers could be prepared from PVA than from the other two polymers. The results showed that the drug was amorphous in the fibers. Most of the drug was located within the fibers, probably as a separate phase; the encapsulation efficiency proved to be 80–90%. The kinetics of the drug release were evaluated quantitatively by the Noyes–Whitney model. The released drug was approximately the same for all the polymers under all conditions (pH), and it changed somewhere between 80 and 100%. The release rate depended both on the type of polymer and pH and varied between 0.1 and 0.9 min−1. Consequently, the selection of the carrier polymer allowed for the adjustment of the release rate according to the requirements, thus justifying the use of electrospun fibers as carrier materials for levocetirizine. LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Várdai, Róbert AU - Lummerstorfer, Thomas AU - Pretschuh, Claudia AU - Gahleitner, Markus AU - Móczó, János AU - Pukánszky, Béla TI - Comparison of the effect and efficiency of two impact modification approaches in polypropylene JF - EXPRESS POLYMER LETTERS J2 - EXPRESS POLYM LETT VL - 17 PY - 2023 IS - 8 SP - 837 EP - 849 PG - 13 SN - 1788-618X DO - 10.3144/expresspolymlett.2023.62 UR - https://m2.mtmt.hu/api/publication/33989559 ID - 33989559 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Magyar Tudósok Körútja 2., Budapest, H-1519, Hungary Borealis Polyolefine GmbH, St.-Peter-Strasse 25, Linz, A-4021, Austria Competence Centre for Wood Composites and Wood Chemistry (Wood K Plus), Division Biobased Composites and Processes, Altenberger Strasse 69, Linz, A-4040, Austria CODEN: COMSE Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Jerabek, Michael AU - Várdai, Róbert AU - Lummerstorfer, Thomas AU - Pretschuh, Claudia AU - Gahleitner, Markus AU - Faludi, Gábor AU - Móczó, János AU - Pukánszky, Béla TI - Impact modification of wood flour reinforced PP composites: Problems, analysis, solution JF - COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING J2 - COMPOS PART A-APPL S VL - 167 PY - 2023 PG - 11 SN - 1359-835X DO - 10.1016/j.compositesa.2023.107445 UR - https://m2.mtmt.hu/api/publication/33870487 ID - 33870487 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Magyar Tudósok Körútja 2., Budapest, H-1519, Hungary Borealis Polyolefine GmbH, St.-Peter-Strasse 25, Linz, A-4021, Austria Competence Centre for Wood Composites and Wood Chemistry (Wood K Plus), Division Biobased Composites and Processes, Altenberger Strasse 69, Linz, A-4040, Austria CODEN: COMSE Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Várdai, Róbert AU - Lummerstorfer, Thomas AU - Pretschuh, Claudia AU - Gahleitner, Markus AU - Faludi, Gábor AU - Móczó, János AU - Pukánszky, Béla TI - Impact modification of PP with short PET fibers: Effect of heat setting on fiber characteristics and composite properties JF - COMPOSITE STRUCTURES J2 - COMPOS STRUCT VL - 311 PY - 2023 PG - 8 SN - 0263-8223 DO - 10.1016/j.compstruct.2023.116810 UR - https://m2.mtmt.hu/api/publication/33698773 ID - 33698773 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Magyar Tudósok Körútja 2., Budapest, H-1519, Hungary Borealis Polyolefine GmbH, St.-Peter-Strasse 25, Linz, A-4021, Austria Competence Centre for Wood Composites and Wood Chemistry (Wood K Plus), Division Biobased Composites and Processes, Altenberger Strasse 69, Linz, A-4040, Austria CODEN: COMSE Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Várdai, Róbert AU - Móczó, János AU - Pukánszky, Béla TI - A novel approach to the impact modification of PLA JF - ENGINEERING FRACTURE MECHANICS J2 - ENG FRACT MECH VL - 277 PY - 2023 PG - 13 SN - 0013-7944 DO - 10.1016/j.engfracmech.2022.108950 UR - https://m2.mtmt.hu/api/publication/33330192 ID - 33330192 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Magyar Tudósok Körútja 2., Budapest, H-1117, Hungary Export Date: 13 December 2022 CODEN: EFMEA Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Várdai, Róbert AU - Móczó, János AU - Pukánszky, Béla TI - Poly(lactic acid) reinforced with synthetic polymer fibers: interactions, structure and properties JF - COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING J2 - COMPOS PART A-APPL S VL - 164 PY - 2023 PG - 9 SN - 1359-835X DO - 10.1016/j.compositesa.2022.107318 UR - https://m2.mtmt.hu/api/publication/33282145 ID - 33282145 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, Budapest, H-1117, Hungary Export Date: 29 November 2022 CODEN: CASMF Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Ferdinánd, Milán László AU - Várdai, Róbert AU - Móczó, János AU - Pukánszky, Béla TI - Reinforcement of PP with a hybrid nanofiller; comparison to talc JF - POLYMER TESTING J2 - POLYM TEST VL - 117 PY - 2023 PG - 9 SN - 0142-9418 DO - 10.1016/j.polymertesting.2022.107840 UR - https://m2.mtmt.hu/api/publication/33212862 ID - 33212862 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, Magyar Tudósok Körútja 2., Budapest, H-1117, Hungary Export Date: 8 November 2022 CODEN: POTED Correspondence Address: Ferdinánd, M.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3., Hungary; email: ferdinandmilanlaszlo@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Bódis, Eszter AU - Molnár, Kolos AU - Móczó, János AU - Károly, Zoltán TI - Preparation and characterization of fibrous alumina and zirconia toughened alumina ceramics with gradient porosity JF - NANOMATERIALS J2 - NANOMATERIALS-BASEL VL - 12 PY - 2022 IS - 23 PG - 19 SN - 2079-4991 DO - 10.3390/nano12234165 UR - https://m2.mtmt.hu/api/publication/33272193 ID - 33272193 N1 - Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, H-1117, Hungary Department of Polymer Engineering, Faculty of Mechanical Engineering Budapest, University of Technology and Economics, Budapest, H-1111, Hungary ELKH-BME Research Group for Composite Science and Technology, Budapest, H-1111, Hungary Export Date: 5 April 2023 Correspondence Address: Bódis, E.; Institute of Materials and Environmental Chemistry, Hungary; email: bodis.eszter@ttk.hu AB - This paper investigated a synthesis process for highly porous Al2O3, Y-ZTA, and Ce-ZTA ceramic nanocomposites with gradient microstructure and improved mechanical properties. Ceramic nanofibres were synthesized as the starting material. The gradient microstructure was developed during spark plasma sintering using an asymmetric graphite arrangement that generated significant temperature differences (80–100 °C) between the opposite sides of the samples. Structural and mechanical properties of the fibrous ceramic composites were investigated. The effect of the temperature gradient on properties was also discussed. While the asymmetric configuration resulted in a gradient porosity, reference samples fabricated in standard graphite configuration were uniformly porous. The gradient structure and the ZrO2 addition led to improved hardness and compression strength of the sintered samples. However, the opposite sides of the samples exhibited considerable variations in both microstructure and in terms of properties. The upper part of the Ce-ZTA ceramic showed a highly porous structure with 18.2 GPa hardness, while the opposite side was highly densified with 23.0 GPa hardness. Compressive strength was 46.1 MPa and 52.1 MPa for Y-ZTA and Ce-ZTA sintered at 1300 °C, respectively, despite their high porosity. The research provided a promising approach to prepare highly porous ZTA composites with high strength for a wide range of applications. LA - English DB - MTMT ER - TY - JOUR AU - Józó, Muriel AU - Várdai, Róbert AU - Bartos, András AU - Móczó, János AU - Pukánszky, Béla TI - Preparation of Biocomposites with Natural Reinforcements: The Effect of Native Starch and Sugarcane Bagasse Fibers JF - MOLECULES J2 - MOLECULES VL - 27 PY - 2022 IS - 19 PG - 15 SN - 1420-3049 DO - 10.3390/molecules27196423 UR - https://m2.mtmt.hu/api/publication/33189814 ID - 33189814 N1 - Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, P.O. Box 286, Budapest, H-1519, Hungary Export Date: 25 October 2022 CODEN: MOLEF Correspondence Address: Várdai, R.; Laboratory of Plastics and Rubber Technology, Műegyetem rkp. 3, Hungary; email: vardai.robert@vbk.bme.hu AB - Biocomposites were prepared from poly(lactic acid) and two natural reinforcements, a native starch and sugarcane bagasse fibers. The strength of interfacial adhesion was estimated by model calculations, and local deformation processes were followed by acoustic emission testing. The results showed that the two additives influence properties differently. The strength of interfacial adhesion and thus the extent of reinforcement are similar because of similarities in chemical structure, the large number of OH groups in both reinforcements. Relatively strong interfacial adhesion develops between the components, which renders coupling inefficient. Dissimilar particle characteristics influence local deformation processes considerably. The smaller particle size of starch results in larger debonding stress and thus larger composite strength. The fracture of the bagasse fibers leads to larger energy consumption and to increased impact resistance. Although the environmental benefit of the prepared biocomposites is similar, the overall performance of the bagasse fiber reinforced PLA composites is better than that offered by the PLA/starch composites. LA - English DB - MTMT ER -