A5048587073- Advanced Cellulose Research Studies
- biodegradable polymer synthesis and properties
- Electrospun Nanofibers in Biomedical Applications
- Silicone and Siloxane Chemistry
- Nanocomposite Films for Food Packaging
- Surface Modification and Superhydrophobicity
- Polymer Nanocomposites and Properties
- Natural Fiber Reinforced Composites
- Microplastics and Plastic Pollution
- Lignin and Wood Chemistry
- Polymer crystallization and properties
- Carbon dioxide utilization in catalysis
- Polymer composites and self-healing
- Additive Manufacturing and 3D Printing Technologies
- TiO2 Photocatalysis and Solar Cells
- Polysaccharides and Plant Cell Walls
- Mesoporous Materials and Catalysis
- Advanced Photocatalysis Techniques
- Dyeing and Modifying Textile Fibers
- Bone Tissue Engineering Materials
- Synthesis and characterization of novel inorganic/organometallic compounds
- Curcumin's Biomedical Applications
- Nanoparticles: synthesis and applications
- Dielectric materials and actuators
- Aerogels and thermal insulation
Institutul Naţional de Cercetare Dezvoltare pentru Chimie si Petrochimie
2016-2025
National Institute for Research and Development in Informatics - ICI Bucharest
2018-2025
National Institute for Research and Development in Environmental Protection
2013-2024
Institute for Research and Development
2010-2016
Cellulose nanofibers were obtained from microcrystalline cellulose (MCC) by the action of hydrodynamic forces associated with ultrasound. Nanofibers isolated MCC applying different ultrasonication conditions characterized to elucidate their morpho-structural features field emission scanning electron microscopy, atomic force X-ray diffraction, and dynamic light scattering. Several differences observed regarding size in ultrasonic conditions, but no significant changes crystalline structure...
Abstract Polymer composites from polylactic acid (PLA) and two types of cellulose fibers obtained either by hydrolysis microcrystalline (HMCC) or mechanical disintegration regenerated wood (MF) were prepared characterized. To enhance the compatibility with PLA matrix, a surface treatment based on 3‐aminopropyltriethoxysilane (APS) was performed. The Fourier Transform Infrared (FTIR) spectroscopy used to determine chemical groups involved in modification reaction. silanization resulted...
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...
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...
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,...
Cellulose is a versatile biopolymer increasingly applied in medicine and industry due to its biodegradability biocompatibility, along with the renewability large availability of source materials. However, finding simple, eco-friendly, effective methods modify cellulose provide it new functionalities remains challenge. This work presents new, inexpensive, eco-friendly method chemically microcrystalline (MCC) by submerged cold plasma treatment an aqueous suspension MCC containing different...
Tailoring the surface properties of nanocellulose to improve compatibility components in polymer nanocomposites is great interest. In this work, dispersions water and acetonitrile were functionalized by submerged plasmas, with aim increasing quality reinforcing agent biopolymer composite materials. Both morphology chemistry influenced application a plasma torch filamentary jet liquid suspension nanocellulose. Depending on type source gas mixture was modified incorporation oxygen nitrogen...
Medium chain-length polyhydroxyalkanoates (mPHAs) are flexible elastomeric biopolymers with valuable properties for biomedical applications like artificial arteries and other medical implants. However, an environmentally friendly high productivity process together the tuning of mechanical biological mPHAs mandatory this purpose. Here, first time, a melt processing technique was applied preparation bionanocomposites starting from poly(3-hydroxyoctanoate) (PHO) bacterial cellulose nanofibers...
Bacterial cellulose (BC) with increased hydrophobicity is required for several applications including packaging. Surface functionalization of BC may provide good resistance to moisture, barrier properties or improved compatibility polymer matrices. For this purpose, chemical grafting in mild, eco-friendly conditions was carried out using different agents. membranes were surface functionalized vinyl-triethoxy silane (VS) 3-aminopropyl triethoxysilane (APS), by acylation and acrylation. The...