A5050575673- Nanocomposite Films for Food Packaging
- Polymer Nanocomposite Synthesis and Irradiation
- Polymer Nanocomposites and Properties
- Surface Modification and Superhydrophobicity
- Photopolymerization techniques and applications
- Advanced Sensor and Energy Harvesting Materials
- Polymer Science and PVC
- biodegradable polymer synthesis and properties
- Advanced Polymer Synthesis and Characterization
- Microencapsulation and Drying Processes
- Electrospun Nanofibers in Biomedical Applications
- Smart Materials for Construction
- Microplastics and Plastic Pollution
- Polymer Surface Interaction Studies
- Advanced Cellulose Research Studies
- Silicone and Siloxane Chemistry
- Polymer crystallization and properties
- Seaweed-derived Bioactive Compounds
- Material Properties and Applications
- Innovative Energy Harvesting Technologies
- Photochemistry and Electron Transfer Studies
- Analytical Chemistry and Sensors
- Synthesis and properties of polymers
- Photochromic and Fluorescence Chemistry
- Additive Manufacturing and 3D Printing Technologies
Nicolaus Copernicus University
2015-2025
Specjalistyczny Szpital Miejski im. M. Kopernika
2014
Films of poly (methyl methacrylate) (PMMA) were prepared by the addition photoinitiator to polymer. The influence five organic photoinitiators on thermal stability poly(methyl was studied thermogravimetric analysis. Next, PMMA films doped with these UV irradiated and investigated in terms changes their stability. It found that had accelerated degradation non-irradiated due action free radicals coming from additives’ thermolysis. For UV-irradiated specimens, effect depended chemical structure...
Tansy (Tanacetum vulgare) is a common plant used in folk medicine for digestive problems, fevers, and migraines; against parasites; as an insect repellent. The active substances essential oil are responsible its antimicrobial antioxidant activity. Thus, tansy (TO) was added to alginate films fabricate materials with antibacterial properties food packaging. Sodium glycerol TO were tested terms of structure, mechanical, thermal, antioxidant, properties. structure the examined using SEM...
The excessive presence of single-use plastics is rapidly degrading our natural environment on a global scale due to their inherent resistance decomposition. Wet wipes used for personal or household purposes contribute significantly the accumulation plastic waste. One potential solution address this problem involves developing eco-friendly materials that possess ability degrade naturally while retaining washing capabilities. For purpose, beads from sodium alginate, gellan gum, and mixture...
In this study potato and corn starch were subjected to oxidation, using sodium periodate, obtain dialdehyde (DAS) containing different amount of aldehyde groups. The obtained modified samples have been characterized with chemical analysis, scanning electron microscopy (SEM) ATR-FTIR spectroscopy. Then, the exposed polychromatic UV radiation course photochemical reaction has monitored surface properties native before after UV-irradiation determined by contact angle measurements calculation...
Alginate films plasticized with glycerol and enriched in raspberry and/or black currant seed oils were prepared via casting solution techniques. The intention was to create active for food packaging where antioxidants a film would deactivate oxidants packed product or its surroundings, improving conditions inside extending the shelf life of such product. materials characterized by physicochemical, spectroscopic, mechanical, water vapor transmission (WVTR), antioxidant activity analysis....
In this study, biodegradable and active films based on sodium alginate incorporated with different concentrations of oils (25% 50%) from fruit seeds were developed for potential applications in food packaging. The ultraviolet visible (UV-VIS) spectra raspberry seed oil (RSO) black currant (BCSO) indicated differences bioactive compounds, such as tocopherols, phenolic carotenoids, chlorophyll, oxidative status (amounts dienes, trienes, tetraenes) components added to films. study encompassed...
We present investigation of optical and photochromic properties as well surface quality thin films novel methacrylic polymers with 8-hydroxyquinoline azo-dyes in side-chain. Additionally, thermal stability polymer powders was examined their glass transition temperature determined. Optical (extinction coefficient refractive index) were determined by spectroscopic ellipsometry (SE) combined absorbance measurements. Photoresponsive behavior investigated determination photoisomerization rates...
Eco-friendly functional alginate films with plant extracts (chokeberry pomace (ChP) or lemon balm (LB) herb) were obtained. Moreover, deep eutectic solvents (DESs) based on choline chloride, glucose, and betaine used to acquire the active substances from materials. The tested regarding antioxidant, mechanical, color properties. results revealed that films’ antioxidant capacities (AC) depended extract type DES used, namely AC values for LB higher than those ChP. of mechanical properties only...
Polymeric cellular composites are very important materials in modern electronics because they can be used as piezopolymers due to low specific weight, good thermal resistance and high value of piezoelectric constant d33. The aim this work was obtain characterize the polypropylene (PP) designed for microelectronics. PP has been modified by addition commercial silicate filler obtained were extruded. Then, subjected electric field polarization. Effect content on structure physicochemical...
Abstract Fourier transform infrared (FTIR) spectroscopy was used to investigate the effect of a commercial photoinitiator [2,2‐dimethoxy‐2‐phenylacetophenone (DMPA); Irgacure 651, Ciba, Basel, Switzerland] incorporated into poly(methyl methacrylate) (PMMA). Pure PMMA and modified (containing 5% DMPA) films were exposed xenon lamp in air. Qualitative quantitative analyses recorded FTIR absorption spectra done. This allowed us determine differences course polymer photooxidative degradation...
Abstract The photooxidative degradation of blends (in a full range compositions) amorphous poly(vinyl chloride) (PVC) with semicrystalline poly(ethylene oxide) (PEO) in the form thin films is investigated using absorption spectroscopy (UV–visible and Fourier transform infrared) atomic force microscopy (AFM). amount insoluble gel formed as result photocrosslinking estimated gravimetrically. It found that PVC/PEO blendsí susceptibility to differs from pure components depends on blend...
Chitosan/poly(ethylene oxide) (PEO) blends of different component ratios, in the form films, have been prepared. Structure, hydrophilicity, morphology and thermal behavior samples examined by Fourier transform infrared spectroscopy (ATR-FTIR), contact angle measurements, atomic force microscopy (AFM) differential scanning calorimetry (DSC).The studies revealed weak interactions between chitosan PEO suggesting immiscibility components blends. However, stronger owing to hydrogen bonding blend...