A5005431461- Electrospun Nanofibers in Biomedical Applications
- Nanocomposite Films for Food Packaging
- biodegradable polymer synthesis and properties
- Silk-based biomaterials and applications
- Wound Healing and Treatments
- Advanced Sensor and Energy Harvesting Materials
- Antimicrobial agents and applications
- Polymer Surface Interaction Studies
- Conducting polymers and applications
- Electrochemical sensors and biosensors
- Luminescence and Fluorescent Materials
- Nanoparticles: synthesis and applications
- Biopolymer Synthesis and Applications
- Phenothiazines and Benzothiazines Synthesis and Activities
- Plasma Applications and Diagnostics
- Hydrogels: synthesis, properties, applications
- Molecular Sensors and Ion Detection
- Electrochemical Analysis and Applications
Romanian Academy
2020-2024
Institutul de Chimie Macromoleculară Petru Poni
2023
Institute of Macromolecular Chemistry
2023
The paper reports new hydrogels based on quaternary ammonium salts of chitosan designed as biocidal products. derivative was crosslinked with salicylaldehyde via reversible imine bonds and supramolecular self-assemble to give dynamic which respond environmental stimuli. crosslinking mechanism demonstrated by 1H NMR FTIR spectroscopy, X-ray diffraction polarized light microscopy. hydrogel nature, self-healing thixotropy were proved rheological investigation visual observation, their...
This paper reports new solid materials based on TEGylated phenothiazine and chitosan, with a high capacity to recover mercury ions from aqueous solutions. They were prepared by hydrogelation of chitosan formyl derivative phenothiazine, followed lyophilization. Their structural supramolecular characterization was carried out 1H-NMR FTIR spectroscopy, as well X-ray diffraction polarized light microscopy. morphology investigated scanning electron microscopy their photophysical behaviour...
The paper reports about binary chitosan/quaternized chitosan nanofibers obtained by direct electrospinning of their solution, without using co-spinning polymers. Both quaternary salts, N,N,N-trimethyl chloride and N-(2-hydroxyl) propyl-3-trimethyl ammonium chloride, were used in the process provided with a mean diameter lower than 100 nm. A morphological evaluation prepared quaternized different molecular weights indicated that weight yielded fibers higher diameter, due to necessity increase...
Abstract Background Quaternary chitosan based fibers have emerged as promising biomaterials for tissue engineering, wound healing and hygiene related textiles, but their in vivo application is restricted by the lack of biodegradability synthetic polymers used co-spinning agents. Herein, we report fully biodegradable chitosan/ N,N,N -trimethyl (TMC) nanofibers prepared via electrospinning, when using poly(ethylene glycol) sacrificial additive, potential bioabsorbable dressings. Methods The...
This study aimed to investigate the behavior of chitosan/quaternized chitosan fibers in media mimicking wound exudates understand their capacities as dressing. Fiber analysis using dynamic vapor sorption proved ability adsorb moisture up 60% and then desorb it a function humidity, indicating outstanding breathability. Dissolution analyses showed that quaternized leached from water PBS, whereas only small portions were solubilized water. In containing lysozyme, degraded with rate determined...
Plasma-activated chitosan (PAC) colloids for cancer treatment were obtained by using the cold atmospheric plasma technique. Chitosan solutions irradiated ignited in argon gas and a mixture of with nitrogen oxygen gases certain ratios. The structural modifications chemical species generated investigated EPR, LC-MS/MS, XRD, DLS, TGA methods. cell viability test showed selective cytotoxic effect on human breast carcinoma cells (MCF-7), while mammary epithelial (MCF-10A) left unharmed. was...
The present study reported the obtention of xerogels based on chitosan and citral their use as materials for mercury ion recovery from aqueous solutions, this being a serious problem related to environment. systems were prepared by acid condensation with citral, followed lyophilization resulting hydrogels, in order obtain highly porous solid materials. structural, morphological supramolecular characterization was performed using 1H-NMR FTIR spectroscopy, scanning electron microscopy...