@article{MTMT:34849476,
	title = {Experimental study on the effect of filament-extrusion rate on the structural, mechanical and thermal properties of material extrusion 3D-printed polylactic acid (PLA) products},
	url = {https://m2.mtmt.hu/api/publication/34849476},
	author = {Lendvai, László and Fekete, Imre and Rigotti, Daniele and Pegoretti, Alessandro},
	doi = {10.1007/s40964-024-00646-5},
	journal-iso = {PROG ADDIT MANUF},
	journal = {PROGRESS IN ADDITIVE MANUFACTURING},
	unique-id = {34849476},
	issn = {2363-9512},
	abstract = {Material extrusion (MEX), also commonly referred to as fused deposition modeling (FDM) or fused filament fabrication (FFF) is currently one of the most commonly used additive manufacturing techniques. The quality of the 3D-printed objects fabricated by MEX methods highly relies on various printing parameters, one of which is the so-called filament extrusion multiplier ( k ). In this study, 3D-printed parts were prepared by MEX technique during which the material feeding rate was adjusted by varying the extrusion multiplier in the range of 97–105% ( k  = 0.97–1.05). The fabricated parts were tested for their geometrical, structural, mechanical, and thermal conductivity properties. Based on computed tomographic analysis and scanning electron microscopic images, increasing the k parameter resulted in smaller voids, along with gradually decreasing porosity (from 5.82 to 0.05%). Parallel to the decreasing defects, the thermal conductivity of the parts improved from 0.157 to 0.188 W/mK as determined by light-flash analysis technique. On the other hand, when k was set to ≥ 1.03 the geometrical accuracy declined, the size of the specimens considerably increased relative to the nominal values, especially in the X–Y directions due to excess material getting “squeezed” on the sides of the specimens. This latter phenomenon also resulted in the formation of a number of stress concentration sites, which manifested in the decrease of mechanical properties. Accordingly, the tensile, flexural, and impact strength of the samples improved up to k  = 1.03; however, above that it dropped considerably.},
	year = {2024},
	eissn = {2363-9520},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X; Rigotti, Daniele/0000-0002-2337-8669; Pegoretti, Alessandro/0000-0001-9641-9735}
}

@article{MTMT:34827091,
	title = {Agricultural by-product filled poly(lactic acid) biocomposites with enhanced biodegradability: The effect of flax seed meal and rapeseed straw},
	url = {https://m2.mtmt.hu/api/publication/34827091},
	author = {Jakab, Sándor Kálmán and Singh, Tej and Fekete, Imre and Lendvai, László},
	doi = {10.1016/j.jcomc.2024.100464},
	journal-iso = {COMPOS PART C},
	journal = {COMPOSITES PART C: OPEN ACCESS},
	volume = {14},
	unique-id = {34827091},
	year = {2024},
	eissn = {2666-6820},
	orcid-numbers = {Jakab, Sándor Kálmán/0009-0009-9688-6304; Singh, Tej/0000-0003-2316-4107; Lendvai, László/0000-0003-3670-327X}
}

@article{MTMT:34523954,
	title = {Thermal, thermomechanical and structural properties of recycled polyethylene terephthalate (rPET)/waste marble dust composites},
	url = {https://m2.mtmt.hu/api/publication/34523954},
	author = {Lendvai, László and Singh, Tej and Ronkay, Ferenc György},
	doi = {10.1016/j.heliyon.2024.e25015},
	journal-iso = {HELIYON},
	journal = {HELIYON},
	volume = {10},
	unique-id = {34523954},
	year = {2024},
	eissn = {2405-8440},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X; Singh, Tej/0000-0003-2316-4107; Ronkay, Ferenc György/0000-0003-0525-1493}
}

@article{MTMT:33748423,
	title = {Selection of straw waste reinforced sustainable polymer composite using a multi-criteria decision-making approach},
	url = {https://m2.mtmt.hu/api/publication/33748423},
	author = {Singh, Tej and Fekete, Imre and Jakab, Sándor Kálmán and Lendvai, László},
	doi = {10.1007/s13399-023-04132-w},
	journal-iso = {BIOMASS CONV BIOREFINERY},
	journal = {BIOMASS CONVERSION AND BIOREFINERY},
	unique-id = {33748423},
	issn = {2190-6815},
	abstract = {The valorization of straw waste as a sustainable and eco-friendly resource in polymer composites is critical for resource recycling and environmental preservation. Therefore, many research works are being carried out regarding the development of wheat straw-based polymer composites to identify the reinforcing potential of these sustainable resources. In this study, three different sizes of wheat straw fibers (60–120 mesh, 35–60 mesh, and 18–35 mesh) were used, and their different ratios (0, 2.5, 5, 10, and 20% by weight) were systematically investigated for the physical and mechanical properties of polypropylene-based sustainable composites. The results indicated that the evaluated composites’ properties are strongly dependent on the quantity and size of the utilized wheat straw. Therefore, a preference selection index was applied to rank the developed sustainable polymer composites to select the best composition. Various properties of the composite materials were considered as criteria for ranking the alternatives, namely tensile strength and modulus, flexural stress at conventional deflection and flexural modulus, impact strength, density, water absorption, material cost, and carbon footprint. The decision-making analysis suggests the alternative with wheat straw content of 20 wt.% (35–60 mesh size) dominating the performance by maximizing the beneficial criteria and minimizing the non-beneficial criteria, making it the most suitable alternative. This study will significantly help formulation designers to deal with the amount and size issues when developing polymeric composites.},
	year = {2024},
	eissn = {2190-6823},
	orcid-numbers = {Singh, Tej/0000-0003-2316-4107; Jakab, Sándor Kálmán/0009-0009-9688-6304; Lendvai, László/0000-0003-3670-327X}
}

@article{MTMT:34150897,
	title = {Thermally conductive and electrically resistive acrylonitrile butadiene styrene (ABS)/boron nitride composites: Optimal design using a multi-criteria decision-making approach},
	url = {https://m2.mtmt.hu/api/publication/34150897},
	author = {Lendvai, László and Singh, Tej and Rigotti, Daniele and Pegoretti, Alessandro},
	doi = {10.1016/j.jmrt.2023.09.165},
	journal-iso = {J MATER RES TECHN},
	journal = {JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY},
	volume = {26},
	unique-id = {34150897},
	issn = {2238-7854},
	year = {2023},
	eissn = {2214-0697},
	pages = {8776-8788},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X; Singh, Tej/0000-0003-2316-4107; Pegoretti, Alessandro/0000-0001-9641-9735}
}

@article{MTMT:34074450,
	title = {Thermal and thermomechanical properties of boron nitride-filled acrylonitrile butadiene styrene (ABS) composites},
	url = {https://m2.mtmt.hu/api/publication/34074450},
	author = {Lendvai, László and Rigotti, Daniele},
	doi = {10.14513/actatechjaur.00706},
	journal-iso = {ACTA TECH JAURIN},
	journal = {ACTA TECHNICA JAURINENSIS},
	volume = {16},
	unique-id = {34074450},
	issn = {1789-6932},
	abstract = {The present study aims at investigating the effect of hexagonal boron nitride (hBN) nanoplatelets on the properties of acrylonitrile butadiene styrene (ABS) polymer. Composites containing 0-30 vol% hBN were prepared through batchwise melt compounding, which was followed by compression molding. Subsequently, the thermal and thermomechanical properties of the fabricated samples were investigated. The dynamic mechanical analysis (DMA) revealed that the storage modulus of the samples was markedly improved in the entire examined temperature range, while the glass transition temperature also gradually increased as a function of hBN content. According to the thermogravimetric analysis (TGA), the incorporated boron nitride particles enhanced the thermal stability of ABS composites, exhibiting a notably higher decomposition onset temperature. Additionally, the thermal conductivity of the ABS/hBN composites significantly increased by 570% when the hBN content was 30 vol%.},
	year = {2023},
	eissn = {2064-5228},
	pages = {123-128},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X; Rigotti, Daniele/0000-0002-2337-8669}
}

@article{MTMT:34048360,
	title = {Lignocellulosic agro-residue/polylactic acid (PLA) biocomposites: Rapeseed straw as a sustainable filler},
	url = {https://m2.mtmt.hu/api/publication/34048360},
	author = {Lendvai, László},
	doi = {10.1016/j.clema.2023.100196},
	journal-iso = {CLEANER MATERIALS},
	journal = {CLEANER MATERIALS},
	volume = {9},
	unique-id = {34048360},
	year = {2023},
	eissn = {2772-3976},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X}
}

@article{MTMT:34041253,
	title = {The Effect of Drying of Glycerol-Plasticized Starch upon Its Dielectric Relaxation Dynamics and Charge Transport},
	url = {https://m2.mtmt.hu/api/publication/34041253},
	author = {Drakopoulos, Stavros X. and Špitalský, Zdenko and Peidayesh, Hamed and Lendvai, László},
	doi = {10.1007/s10924-023-02962-3},
	journal-iso = {J POLYM ENVIRON},
	journal = {JOURNAL OF POLYMERS AND THE ENVIRONMENT},
	volume = {31},
	unique-id = {34041253},
	issn = {1566-2543},
	year = {2023},
	eissn = {1572-8900},
	pages = {5389-5400},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X}
}

@article{MTMT:34033644,
	title = {Mechanical and morphological properties of PP/XNBR blends produced with rubber latex},
	url = {https://m2.mtmt.hu/api/publication/34033644},
	author = {Lendvai, László},
	doi = {10.1007/s10965-023-03660-3},
	journal-iso = {J POLYM RES},
	journal = {JOURNAL OF POLYMER RESEARCH},
	volume = {30},
	unique-id = {34033644},
	issn = {1022-9760},
	abstract = {In this work, polypropylene (PP)/carboxylated acrylonitrile butadiene rubber (XNBR) binary blends were prepared with the elastomer component dosed in its suspension (latex) form into the polymer matrix during melt compounding. For this purpose, samples containing 0-20 wt.% rubber were prepared using two different PP grades as matrices with lower and higher viscosity. Analogous reference samples with the same composition were also fabricated using traditional melt mixing by introducing the rubber in its dry, bulk form in order to analyze the efficiency of the latex route. Mechanical, thermomechanical and morphological analyses were used to investigate the structure-property relationships of the blends. Based on the SEM images the average domain size of the dispersed XNBR domains became markedly smaller when the rubber was introduced in its suspension form into the PP. Based on the Charpy impact tests and the tensile test results, the decreased rubber domain size led to improved ductility and toughness. The improvement was more prominent when the difference between the viscosity of the PP matrix and the XNBR rubber was higher.},
	year = {2023},
	eissn = {1572-8935},
	orcid-numbers = {Lendvai, László/0000-0003-3670-327X}
}

@article{MTMT:33939422,
	title = {Performance Optimization of Lignocellulosic Fiber-Reinforced Brake Friction Composite Materials Using an Integrated CRITIC-CODAS-Based Decision-Making Approach},
	url = {https://m2.mtmt.hu/api/publication/33939422},
	author = {Singh, Tej and Aherwar, Amit and Ranakoti, Lalit and Bhandari, Prabhakar and Singh, Vedant and Lendvai, László},
	doi = {10.3390/su15118880},
	journal-iso = {SUSTAINABILITY-BASEL},
	journal = {SUSTAINABILITY},
	volume = {15},
	unique-id = {33939422},
	abstract = {A hybrid multicriteria decision-making (MCDM) framework, namely “criteria importance through inter-criteria correlation-combinative distance-based assessment” (CRITIC-CODAS) is introduced to rank automotive brake friction composite materials based on their physical and tribological properties. The ranking analysis was performed on ten brake friction composite material alternatives that contained varying proportions (5% and 10% by weight) of hemp, ramie, pineapple, banana, and Kevlar fibers. The properties of alternatives such as density, porosity, compressibility, friction coefficient, fade-recovery performance, friction fluctuation, cost, and carbon footprint were used as selection criteria. An increase in natural fiber content resulted in a decrease in density, along with an increase in porosity and compressibility. The composite with 5 wt.% Kevlar fiber showed the highest coefficient of friction, while the 5 wt.% ramie fiber-based composites exhibited the lowest levels of fade and friction fluctuations. The wear performance was highest in the composite containing 10 wt.% Kevlar fiber, while the composite with 10 wt.% ramie fiber exhibited the highest recovery. The results indicate that including different fibers in varying amounts can affect the evaluated performance criteria. A hybrid CRITIC-CODAS decision-making technique was used to select the optimal brake friction composite. The findings of this approach revealed that adding 10 wt.% banana fiber to the brake friction composite can give the optimal combination of evaluated properties. A sensitivity analysis was performed on several weight exchange scenarios to see the stability of the ranking results. Using Spearman’s correlation with the ranking outcomes from other MCDM techniques, the suggested decision-making framework was further verified, demonstrating its effectiveness and stability.},
	year = {2023},
	eissn = {2071-1050},
	orcid-numbers = {Singh, Tej/0000-0003-2316-4107; Aherwar, Amit/0000-0002-7245-2925; Ranakoti, Lalit/0000-0002-8776-3902; Bhandari, Prabhakar/0000-0003-3681-5554; Singh, Vedant/0000-0002-2318-5322; Lendvai, László/0000-0003-3670-327X}
}