A5008700481- Hydrogels: synthesis, properties, applications
- Polysaccharides Composition and Applications
- Rheology and Fluid Dynamics Studies
- Surfactants and Colloidal Systems
- Polymer crystallization and properties
- Electrospun Nanofibers in Biomedical Applications
- biodegradable polymer synthesis and properties
- Polymer Nanocomposites and Properties
- Electrostatics and Colloid Interactions
- Advanced Polymer Synthesis and Characterization
- Polysaccharides and Plant Cell Walls
- 3D Printing in Biomedical Research
- Advanced Cellulose Research Studies
- Adsorption, diffusion, and thermodynamic properties of materials
- Polymer composites and self-healing
- Polymer Surface Interaction Studies
- Advanced Sensor and Energy Harvesting Materials
- Thermodynamic properties of mixtures
- Proteins in Food Systems
- Phase Equilibria and Thermodynamics
- Supramolecular Self-Assembly in Materials
- Nanocomposite Films for Food Packaging
- Lubricants and Their Additives
- Polymer Science and PVC
- Gear and Bearing Dynamics Analysis
Institutul de Chimie Macromoleculară Petru Poni
1999-2024
Romanian Academy
2012-2023
Institute of Macromolecular Chemistry
1995-2021
Grigore T. Popa University of Medicine and Pharmacy
2021
Johannes Gutenberg University Mainz
2003-2017
Centre de Mise en Forme des Matériaux
2000-2014
Centre National de la Recherche Scientifique
2000-2014
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2014
University of Applied Sciences Mainz
2014
École Nationale Supérieure des Mines de Paris
2000-2014
The high versatility of poly(vinylpyrrolidone) (PVP) can be explained by its diverse properties including solubility in water and a broad range liquid media, chemical thermal resistance, unique wetting, binding, film-forming properties. Thanks to biocompatibility, absence toxicity capacity form interpolymer complexes, PVP is widely used for designing materials different applications, such as biomaterials medical nonmedical uses. This review summarizes vast diversity applicative examples...
Polysaccharides and proteins are abundantly found in nature highly recommended for developing eco-friendly materials due to their special properties (biodegradability, biocompatibility, non-toxicity, low cost, etc.). However, they sometimes fail meet specific requirements poor mechanical physical properties. Poly(vinyl alcohol) (PVA) is one of the promising synthetic polymers with superior that can be blended natural obtaining novel biomaterials improved performances. This review addresses...
The rheology of rigid rod cellulose whisker suspensions has been investigated. isotropic-at-rest suspension flow curves show two plateaus, one at low shear rates and another high rates, that reflect the isotropic (at rates) or oriented suspensions. From rate viscosity plateau vs concentration, we see system is in semidilute region above 0.02 wt %, agreement with theoretical predictions. same curve, can estimate a maximum packing concentration whiskers rods corresponds to experimentally...
Many efforts are continuously undertaken to develop glucose-sensitive biomaterials able of controlling glucose levels in the body and self-regulating insulin delivery. Hydrogels that swell or shrink as a function environmental free content suitable systems for monitoring blood glucose, delivering doses adapted concentration. In this context, development sensors based on reversible binding molecules represents continuous challenge. Concanavalin A (Con A) is bioactive protein isolated from...
Rheological behaviour of poly(vinyl alcohol) (PVA) aqueous systems was systematically investigated at 30 °C for different concentrations, molecular weights and hydrolysis degrees. The viscosity very dilute polymer solutions studied by means viscometry, while the concentrated were analyzed steady shear flow measurements. limit between entangled non-entangled states PVA determined as crossover two scaling laws describing dependence specific a function coil overlap parameter, c[η]. Then,...
Two natural polymers, i.e., cellulose and water soluble pullulan, have been selectively oxidized employing the TEMPO-mediated protocol, to allow introduction of C6-OOH groups. Thereafter, composite hydrogels poly(vinyl alcohol) (PVA) different content polysaccharides were prepared by freezing/thawing method. The Fourier transform infrared spectroscopy (FTIR) has used discuss degree interaction between constituents into physical network. homogeneity as revealed SEM show an excellent...
Different formulations containing Pluronic F127 and polysaccharides (chitosan, sodium alginate, gellan gum, κ-carrageenan) were investigated as potential injectable gels that behave free-flowing liquid with reduced viscosity at low temperatures displayed solid-like properties 37 °C. In addition, ZnO nanoparticles, lysozyme, or curcumin added for testing the antimicrobial of thermal-sensitive gels. Rheological investigations evidenced small changes in transition temperature kinetics gelation...
This paper reports new physical hydrogels obtained by the freezing/thawing method. They include pullulan (PULL) and poly(vinyl alcohol) (PVA) as polymers, bovine serum albumin (BSA) protein, a tripeptide, reduced glutathione (GSH). In addition, sample containing PULL/PVA lysozyme was in similar conditions. SEM analysis evidenced formation of networks with porous structure. The average pore size found to be between 15.7 μm 24.5 μm. All samples exhibited viscoelastic behavior typical networks,...
Thermoresponsive Pluronic® F127 (PL) gels in water were investigated through rheological tests different shear conditions. The gel strength was tuned with the addition of 1% polysaccharide solution. In presence xanthan gum (XG), viscoelastic behavior PL-based hydrogels improved aqueous environment, but less changed XG PBS solutions, whereas 0.1 M NaCl, parameters decreased. PL micellar networks exhibited a self-healing ability, recovering their initial structure after applying cycles high...
Aqueous mixtures of Pluronic F127 and poly(vinyl alcohol) (20% polymer concentration in the system) were prepared investigated by rheology laser particle size distribution, order to obtain temperature responsive gels for biomedical applications. The influence gelation conditions system composition on viscoelastic parameters distribution (which are very sensitive sol−gel transition process) was followed. investigations realized at physiological (37 °C) showed thixotropic profile gels, yield...