The present paper reports a novel method to improve the properties of polyethylene (PE) and polypropylene (PP) polymer foils suitable for applications in food packaging. It relates adsorption chitosan-colloidal systems onto untreated oxygen plasma-treated foil surfaces. is hypothesized that first coated layer chitosan macromolecular solution enables excellent antibacterial properties, while second (uppermost) contains network polyphenol resveratrol, embedded into nanoparticles, which...

The dissolution of upconverting AYF4:Yb,Tm (A = Na or K) nanoparticles (UCNPs) in aqueous media was systematically studied. UCNPs with a cubic structure and sizes between 10 33 nm were synthesized solvothermally ethylene glycol at 200 °C. both compositions showed an upconversion fluorescence emission characteristic Tm(3+). effects the A cation, particle size, temperature, pH, composition medium on evaluated. degree determined from fraction dissolved fluoride (F(-)) using potentiometry....

In a proof-of-concept study, we assessed different analytical and spectroscopic parameters for stability screening of differently sized β-NaYF4:20 mol % Yb3+, 2 Tm3+ upconversion nanoparticles (UCNPs) exemplarily in the bioanalytically relevant buffer phosphate buffered saline (PBS; pH 7.4) at 37 50 °C. This included potentiometric determination amount released fluoride ions, surface analysis with X-ray photoelectron spectroscopy (XPS), steady-state time-resolved fluorescence measurements....

The partial dissolution of selected nanoparticles (NaYF₄, LaF₃ and GdF₃) co-doped with Yb³⁺ Tm³⁺ was detected compared respect to their size, chemical composition structure.

In this research, antimicrobial polysaccharide chitosan was used as a surface coating for packaging material. The aim of our research to establish an additive formulation and antioxidative plant extracts dispersion nanoparticles. Chitosan nanoparticles with embedded thyme, rosemary cinnamon were synthesized, characterized purpose. Two representative, commercially foils, polypropylene (PP) polyethylene (PE), previously activated by UV/ozone improve adhesion, functionalized using...

Engineering functional biomaterials surfaces that resist biofilm formation triggered by unspecific protein adsorption is a key challenge, and these biosurfaces hold huge potential in implant-associated infection. Herein, we report water-based facile approach to install carboxylated-hyaluronic acid sulfated-fucoidan on cationically tethered polydimethylsiloxane (PDMS) implant. We showed hydrophilic, charged, polysaccharide-based biosurfaces/biocoatings provide long-term stability, no of...

Dissolution of upconverting nanoparticles (β-NaYF₄:Yb³⁺,Tm³⁺) in PBS was efficiently suppressed by a polymer coating, PMAO cross-linked with BHMT.

The emergence of antimicrobial resistance due to antibiotics in the environment presents significant public health, economic, and societal risks. This study addresses need for effective strategies reduce antibiotic residues, focusing on ciprofloxacin degradation. Magnetic iron oxide nanoparticles (IO NPs), approximately 13 nm size, were synthesized functionalized with branched polyethyleneimine (bPEI) obtain a positive charge. These IO-bPEI NPs combined negatively charged titanium dioxide...

Medical implant-associated infections resulting from biofilm formation triggered by unspecific protein adsorption are the prevailing cause of implant failure. However, surfaces rendered with multifunctional bioactive nanocoatings offer a promising alternative to prevent initial attachment bacteria and effectively interrupt formation. The need research develop novel stable for medical implants comprehensive understanding their properties in contact complex biological environment crucial. In...

Due to the extreme rise of sludge pollution with heavy metals (e.g. copper), options for its disposal or treatment are decreasing. On contrary, properly metal-cleaned can be used as an alternative sustainable energy and agriculture source. The aim this study was develop a novel nanoadsorbent, based on irreversibly linked amino-rich polymer onto previously silica-coated magnetic nanoparticles (MNPs) that applied efficiently metal removal. MNPs were coated uniformly by 3 nm thick silica layer...

The analysis of the surface zeta potential (SZP) opens up new possibilities in characterization various materials used for scientific or industrial applications. It provides at same time insight into material chemistry and elucidates interactions with charged species aqueous test solution. For this purpose, an accurate, reliable repeatable SZP is key factor. This work focuses on a detailed systematic comparison two electrokinetic techniques, i.e. mapping electro-osmotic flow (EOF)...

The (bio)degradation of plastics in soil is a complex process that depends on several factors, such as the type plastic, environmental conditions, microbial activity, and presence other organic matter soil. Ageing thus also influences physicochemical properties plastic materials to understand mechanisms investigate changes due decomposition followed by fragmentation, gravimetric, morphological, surface, thermal were studied some them for first time. study was performed three different...

Examining the critical role of anticoagulants in medical practice, particularly their central function preventing abnormal blood clotting, is utmost importance. However, study interactions between proteins and alternative anticoagulant nano-surfaces still understood poorly. In this study, novel approach involving direct functionalisation magnetic iron oxide nanoparticles (MNPs) as carriers with sulphated dextran (s-dext) presented, aim evaluating potential magnetically-responsive MNPs@s-dext...

The pollution of environmental systems with heavy metals is becoming a serious problem worldwide. These contaminants are one the main issues in sludge (which considered waste) and can even have harmful effects if not treated properly. Thus, development novel functional magnetic nanoadsorbent based on derived lysine reported here, which be efficiently applied for metal removal from sludge. Magnetic nanoparticles were coated silica layer further modified by covalent bonding lysine. morphology...

The outbreak of the worrisome coronavirus disease in 2019 has caused great concern among global public, especially regarding need for personal protective equipment with applied antiviral agents to reduce spread and transmission virus. Thus, our research, chitosan-based bioactive polymers as potential were first evaluated colloidal macromolecular solutions by elemental analysis charge. Three different types low high molecular weight chitosan (LMW Ch, HMW Ch) a LMW Ch derivative, i.e.,...

UV-ozone activated polypropylene (PP) food films were subjected to a novel bilayer coating process involving primary or quaternary chitosan (CH/QCH) as the first layer and natural extracts from juniper needles (Juniperus oxycedrus; JUN) blackberry leaves (Rubus fruticosus; BBL) second layer. This innovative approach aims redefine active packaging (AP) development. Through detailed analysis by surface characterization bioactivity assessments (i.e., antioxidant antimicrobial functionalities),...

<title>Abstract</title> At present, great importance is attached to the use of waste biomass for sustainable provision and fractionation natural resources. This particularly true production biopolymers promote development novel material products based on sustainability. increased focus driven by socio-economic environmental considerations. Feathers from chickens are regarded as a poultry meat sector. These organic wastes can be used keratin sources applications in formation nanoparticles...