A5051811468- biodegradable polymer synthesis and properties
- Advanced Cellulose Research Studies
- Electrospun Nanofibers in Biomedical Applications
- Polymer Nanocomposites and Properties
- Natural Fiber Reinforced Composites
- Microplastics and Plastic Pollution
- Polymer crystallization and properties
- Silicone and Siloxane Chemistry
- Nanocomposite Films for Food Packaging
- Recycling and Waste Management Techniques
- Surface Modification and Superhydrophobicity
- Mesoporous Materials and Catalysis
- Polymer composites and self-healing
- Dielectric materials and actuators
- Advanced Sensor and Energy Harvesting Materials
- Polymer Nanocomposite Synthesis and Irradiation
- Dyeing and Modifying Textile Fibers
- Lignin and Wood Chemistry
- Analytical chemistry methods development
- Bone Tissue Engineering Materials
- Carbon dioxide utilization in catalysis
- Analytical Chemistry and Chromatography
- Cultural Heritage Materials Analysis
- Membrane Separation Technologies
- Additive Manufacturing and 3D Printing Technologies
Institutul Naţional de Cercetare Dezvoltare pentru Chimie si Petrochimie
2016-2025
National Institute for Research and Development in Informatics - ICI Bucharest
2016-2025
National Institute for Research and Development in Environmental Protection
2014-2024
Research & Development Institute
2014
Institute for Research and Development
2012
We focused on preparing cellulose nanofibrils by purification, separation, and mechanical treatment of Kombucha membranes (KM) resulted as secondary product from beverage production fermentation tea broth with symbiotic culture bacteria yeast (SCOBY). purified KM using two alkaline solutions, 1 4 M NaOH, which afterwards were subjected to various treatments. Transmission electron microscopy (TEM), scanning (SEM), dynamic light scattering (DLS), X-ray diffraction (XRD), fluorescence (XRF),...
Biodegradable blends and nanocomposites were produced from polylactic acid (PLA), poly(3-hydroxybutyrate) (PHB) cellulose nanocrystals (NC) by a single step reactive blending process using dicumyl peroxide (DCP) as cross-linking agent. With the aim of gaining more insight into impact processing methods upon morphological, thermal mechanical properties these nanocomposites, three different techniques employed: compression molding, extrusion, 3D printing. The addition DCP improved interfacial...
ABSTRACT The widespread application of poly(3‐hydroxybutyrate) (PHB) in the food packaging and biomedical fields has been hindered by its high brittleness, slow crystallization, poor thermal stability, narrow processing window. To overcome these limitations, a mixture biodegradable biocompatible plasticizers was used to modify PHB. Epoxidized soybean oil (ESO), acetyl tributyl citrate, poly(ethylene glycol) 4000 (PEG4000), 6000 (PEG6000) were tested improve PHB melt achieve balanced...
In this work, a new eco-friendly method for the treatment of poly(3-hydroxybutyrate) (PHB) as candidate food packaging applications is proposed. Poly(3-hydroxybutyrate) was modified by bacterial cellulose nanofibers (BC) using melt compounding technique and plasma or zinc oxide (ZnO) nanoparticle coating better properties antibacterial activity. Plasma preserved thermal stability, crystallinity melting behavior PHB‒BC nanocomposites, regardless amount BC nanofibers. However, remarkable...
Hybrid nanomaterials based on zinc oxide were synthesized via the sol-gel method, using different silane coupling agents: (3-glycidyloxypropyl)trimethoxysilane (GPTMS), phenyltriethoxysilane (PhTES), octyltriethoxysilane (OTES), and octadecyltriethoxysilane (ODTES). Morphological properties precursor type effect particle size investigated dynamic light scattering (DLS), environmental scanning electron microscopy (ESEM), transmission (TEM), thermogravimetric analysis (TGA), X-ray diffraction...
Submerged liquid plasma (SLP) is a new and promising method to modify powder materials. Up now, this technique has been mostly applied carbonaceous materials, however, SLP shows great potential as low-cost environmental-friendly cellulose. In work we demonstrate the modification of microcrystalline cellulose (MCC) by applying combined with ultrasonication treatments. The generated either in an inert (argon) or reactive (argon: oxygen argon:nitrogen) gas was used MCC dispersions water...
In this research work, silica nanoparticles and silica-gentamicin nanostructured solution were synthesized by using the microwave-assisted synthesis, in basic medium, two silane precursors (tetraethylorthosilicate octyltriethoxysilane) antibiotic (gentamicin sulfate). The prepared materials characterized through Fourier transform infrared (FTIR) spectroscopy, TGA analysis, transmission electron microscopy (TEM), atomic force (AFM) to investigate morphology structure. Antimicrobial studies of...
Biocompatible composites play a critical role as scaffolds in tissue engineering. Novel biocomposites made from poly(3-hydroxybutyrate) (PHB), polyhydroxyalkanoate (PHA) and bacterial cellulose (BC) different concentrations were prepared by solution casting their thermal mechanical behavior well biocompatibility was characterized. BC addition increased the stability of polymer matrix evidenced thermogravimetric analysis. The crystallinity PHB crystallization temperature decreased with PHA,...
The control of the fiber length is proposed as a low cost and eco-friendly alternative to expensive chemical treatments fibers in polymer composites. Different initial lengths hemp (HF), ranging from 1 4 mm, were obtained using automatic milling manual cutting. effect HF on properties composites was studied complex system consisting polypropylene (PP)/poly[styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS)/HF composite. A reduction average about 2, 2.5 or times, depending length, observed...