Beáta Szolnoki
YOU?
Author Swipe
View article: Phosphorus and Silicon Modified Alginate as an Efficient Flame Retardant for Poly(lactic acid)
Phosphorus and Silicon Modified Alginate as an Efficient Flame Retardant for Poly(lactic acid) Open
The introduction of biobased carbon sources in intumescent flame retardant formulations is extensively explored, particularly for biopolymers such as poly(lactic acid) (PLA). In this work, the flame retardant efficiency of alginate, a favo…
View article: Chitosan nanocoatings N-acylated with decanoic anhydride: Hydrophobic, hygroscopic and structural properties
Chitosan nanocoatings N-acylated with decanoic anhydride: Hydrophobic, hygroscopic and structural properties Open
Thin (ca. 340 nm) chitosan coatings were deposited onto glass substrates via dip-coating, then modified with the methanol solution of decanoic anhydride (0.17-56 mM). NMR, FTIR and XPS measurements confirmed that the acylation degree incre…
View article: Preparation and Characterization of Microencapsulated Ammonium Polyphosphate with Polyurethane Shell and Its Flame Retardance in Polypropylene
Preparation and Characterization of Microencapsulated Ammonium Polyphosphate with Polyurethane Shell and Its Flame Retardance in Polypropylene Open
Polypropylene (PP) shows no charring ability in burning due to the lack of hydroxyl functional groups; thus, the flame retardant system needs an additional amount of carbonizing agent. An ammonium polyphosphate (APP)-based all-in-one intum…
View article: Comparative study of flame retardancy in polyimine vitrimers and composites: Evaluating additive and reactive flame retardants acting via gas-, solid-, and combined-phase mechanisms
Comparative study of flame retardancy in polyimine vitrimers and composites: Evaluating additive and reactive flame retardants acting via gas-, solid-, and combined-phase mechanisms Open
We developed flame retarded polyimine type vitrimers and carbon fibre reinforced composites using two additive and a reactive flame retardant containing phosphorus: ammonium polyphosphate (APP), resorcinol bis(diphenyl phosphate) (RDP); an…
View article: The utilization of phytic acid as a reactive flame retardant in the preparation of a fully waterborne biobased epoxy system
The utilization of phytic acid as a reactive flame retardant in the preparation of a fully waterborne biobased epoxy system Open
A fully biobased waterborne flame‐retarded epoxy system was prepared using sorbitol polyglycidyl ether epoxy resin (SPE) and phytic acid (PA) as a reactive flame retardant (FR). The flame‐retardant efficiency was evaluated by comparing the…
View article: Reusable Glucose-Based Crown Ethers Anchored to PVC
Reusable Glucose-Based Crown Ethers Anchored to PVC Open
The recovery and reuse of the enantioselective catalysts produced by tedious work are important not only from the perspective of green chemistry, but also from the point of view of productivity. Some of the carbohydrate-based crown ethers …
View article: Multifunctional Modifying Systems Based on Ionic Liquids for Epoxy Resin Systems and Composites
Multifunctional Modifying Systems Based on Ionic Liquids for Epoxy Resin Systems and Composites Open
The continuous development of the industry of composite materials and epoxy resins requires the development of components that modify these systems. It is extremely beneficial to modify functionality by using one or two substances instead …
View article: Eco-friendly Synthesis of Novel Phosphorus Flame Retardants for Multiple Purposes
Eco-friendly Synthesis of Novel Phosphorus Flame Retardants for Multiple Purposes Open
The synthesis methods of most parts of phosphorus (P)-based flame retardants apply harmful and toxic reagents, and the formation of byproducts is often inevitable. The synthesis of P-based flame retardants (FRs) according to the green chem…
View article: Barrier behaviour of partially N-acetylated chitosan layers in aqueous media
Barrier behaviour of partially N-acetylated chitosan layers in aqueous media Open
Chitosan coatings of 353 ± 12 nm thickness were prepared on glass and zinc substrates by dip-coating method to study their barrier-behaviour. The coatings were chemically modified to increase their degree of acetylation (DA) from ca. 44 % …
View article: Investigation of the modes of action for phosphorous flame retardants in a fully waterborne sugar-based epoxy resin
Investigation of the modes of action for phosphorous flame retardants in a fully waterborne sugar-based epoxy resin Open
A fully waterborne epoxy system was prepared from waterborne sorbitol-based epoxy resin cured with an alkylated polyalkylene polyamine hardener. The flame-retardant property was accomplished by the application of different additive phospho…
View article: Effect of clay minerals on the flame retardancy of polylactic acid/ammonium polyphosphate system
Effect of clay minerals on the flame retardancy of polylactic acid/ammonium polyphosphate system Open
The overview of the literature reveals the lack of comprehensive study on the effect of clay minerals in flame-retarded polylactic acid (PLA) composites. This research focuses on sepiolite (SEP) and montmorillonite (MMT) clay minerals and …
View article: Development of Intumescent Flame Retardant for Polypropylene: Bio-epoxy Resin Microencapsulated Ammonium-polyphosphate
Development of Intumescent Flame Retardant for Polypropylene: Bio-epoxy Resin Microencapsulated Ammonium-polyphosphate Open
As polypropylene (PP) has no charring ability on its own due to the lack of hydroxyl functional groups, the flame retardant system needs the addition of carbonizing agent in a relatively great amount. Ammonium-polyphosphate (APP), a conven…
View article: Improving thermal and flame retardant properties of sorbitol‐based bioepoxy systems by <scp>phosphorus‐based</scp> flame retardants
Improving thermal and flame retardant properties of sorbitol‐based bioepoxy systems by <span>phosphorus‐based</span> flame retardants Open
Summary Flame‐retarded sorbitol‐based bioepoxy resins cured with cycloaliphatic amine hardener and containing different commercially available additive‐type flame retardants (FRs) have been prepared. Three different oxidation states of pho…
View article: Durability of microporous hybrid silica coatings: Optical and wetting properties
Durability of microporous hybrid silica coatings: Optical and wetting properties Open
Bifunctional hybrid silica sol-gel coatings were synthesized, which showed both increased light transmittance and water-repellence. The as-prepared coatings of variable thickness (100–175 nm) were found to have low refractive index (1.250–…
View article: The effect of manufacturing technologies on the flame retardancy of carbon fibre reinforced epoxy resin composites
The effect of manufacturing technologies on the flame retardancy of carbon fibre reinforced epoxy resin composites Open
We prepared reference and flame-retarded carbon fibre reinforced composites both by liquid composite moulding, in particular vacuum infusion, and by hand lamination followed by hot pressing (wet compression moulding) in order to study the …
View article: Optimal distribution of phosphorus compounds in multi-layered natural fabric reinforced biocomposites
Optimal distribution of phosphorus compounds in multi-layered natural fabric reinforced biocomposites Open
Flame retardancy and mechanical performance of multi-layered biocomposites, consisting of polylactic acid (PLA) matrix films and plain-woven flax fabrics as reinforcement, were investigated. Full factorial design (32) was applied to evalua…
View article: Development of Bioepoxy Resin Microencapsulated Ammonium-Polyphosphate for Flame Retardancy of Polylactic Acid
Development of Bioepoxy Resin Microencapsulated Ammonium-Polyphosphate for Flame Retardancy of Polylactic Acid Open
Ammonium-polyphosphate (APP) was modified by microencapsulation with a bio-based sorbitol polyglycidyl ether (SPE)-type epoxy resin and used as a flame retardant additive in polylactic acid (PLA) matrix. The bioresin-encapsulated APP (MCAP…
View article: The Effect of Multilevel Carbon Reinforcements on the Fire Performance, Conductivity, and Mechanical Properties of Epoxy Composites
The Effect of Multilevel Carbon Reinforcements on the Fire Performance, Conductivity, and Mechanical Properties of Epoxy Composites Open
We studied the effect of a multilevel presence of carbon-based reinforcements—a combination of conventional load-bearing unidirectional carbon fiber (CF) with multiwalled carbon nanotubes (CNT) and conductive CNT-containing nonwoven carbon…
View article: Pharmaceutical and Macromolecular Technologies in the Spirit of Industry 4.0
Pharmaceutical and Macromolecular Technologies in the Spirit of Industry 4.0 Open
Well designed (multilayer, adaptive, reactive) interphases, being a key element of multicomponent structures, could be tailored to different requirements through controlled technologies. This is the link connecting various green, safe, hea…
View article: New Opportunities to Improve the Enantiomeric and Diastereomeric Separations
New Opportunities to Improve the Enantiomeric and Diastereomeric Separations Open
The preparation of single enantiomers (ee ~100%) is one of the most important demands both for industrial practice and research. Actually, the resolution of the racemic compounds still remains the most common method for producing pure enan…
View article: Separation of Chiral Compounds: Enantiomeric and Diastereomeric Mixtures
Separation of Chiral Compounds: Enantiomeric and Diastereomeric Mixtures Open
Despite the dramatic development of enantioselective synthesis and chromatographic separation methods, optical resolution still remains the cheapest and operationally simplest method for producing pure enantiomers on a larger scale. No ext…
View article: Flame Retardancy of Low-Viscosity Epoxy Resins and Their Carbon Fibre Reinforced Composites via a Combined Solid and Gas Phase Mechanism
Flame Retardancy of Low-Viscosity Epoxy Resins and Their Carbon Fibre Reinforced Composites via a Combined Solid and Gas Phase Mechanism Open
Low viscosity, potentially renewable aliphatic epoxy resins, appropriate for processing with injection techniques were flame retarded with the use of resorcinol bis(diphenyl phosphate) (RDP), acting predominantly in the gas phase, ammonium…
View article: Flame Retardancy of Carbon Fibre Reinforced Sorbitol Based Bioepoxy Composites with Phosphorus-Containing Additives
Flame Retardancy of Carbon Fibre Reinforced Sorbitol Based Bioepoxy Composites with Phosphorus-Containing Additives Open
Carbon fibre reinforced flame-retarded bioepoxy composites were prepared from commercially available sorbitol polyglycidyl ether (SPE) cured with cycloaliphatic amine hardener. Samples containing 1, 2, and 3% phosphorus (P) were prepared u…
View article: Flame Retardancy of Sorbitol Based Bioepoxy via Combined Solid and Gas Phase Action
Flame Retardancy of Sorbitol Based Bioepoxy via Combined Solid and Gas Phase Action Open
Flame-retarded bioepoxy resins were prepared with the application of commercially available sorbitol polyglycidyl ether (SPE). The additive-type flame retardancy of the cycloaliphatic amine-cured SPE was investigated. Three-percent phospho…
View article: Mechanical properties of reactively flame retarded cyanate ester/epoxy resin blends and their carbon fibre reinforced composites
Mechanical properties of reactively flame retarded cyanate ester/epoxy resin blends and their carbon fibre reinforced composites Open
Cyanate ester/epoxy resin (CE/EP) carbon fibre reinforced composites consisting of diglycidyl ether of bisphenol A (DGEBA) and novolac type cyanate ester (CE) were prepared and reactively flame retarded using epoxy functional adduct of DGE…
View article: The Synthesis of Bio‐Based Flame‐Retarded Epoxy‐Precursors
The Synthesis of Bio‐Based Flame‐Retarded Epoxy‐Precursors Open
Summary The synthesis of phosphorylated di‐ and triallyl glucopyranosides was elaborated that may be regarded as precursors of bio‐based monomers having potential flame‐retardant properties. In a separate series of experiments, the phospho…