A5089757003- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- Polysaccharides and Plant Cell Walls
- Biofuel production and bioconversion
- Microplastics and Plastic Pollution
- biodegradable polymer synthesis and properties
- Catalysis for Biomass Conversion
- Nanocomposite Films for Food Packaging
- Surfactants and Colloidal Systems
- Recycling and Waste Management Techniques
- Hydrogels: synthesis, properties, applications
- Coagulation and Flocculation Studies
- Electrospun Nanofibers in Biomedical Applications
- Advanced Polymer Synthesis and Characterization
- Clay minerals and soil interactions
- Polysaccharides Composition and Applications
- Probiotics and Fermented Foods
- Education Pedagogy and Practices
- Environmental Chemistry and Analysis
- Aerogels and thermal insulation
- Pharmaceutical and Antibiotic Environmental Impacts
- Electrostatics and Colloid Interactions
- Microencapsulation and Drying Processes
- Sensory Analysis and Statistical Methods
- Flame retardant materials and properties
University of Coimbra
2015-2024
Museu de Lisboa
2018
Instituto Superior Técnico
2010
University of Lisbon
2010
Cellulose is the most abundant polymer and a very important renewable resource. Since cellulose cannot be shaped by melting, major route for its use novel materials, new chemical compounds energy must go via solution state. Investigations during several decades have led to identification of solvents notably different character. The mechanisms dissolution in terms intermolecular interactions been discussed from early work but, even on fundamental aspects, conflicting opposite views appear. In...
Food contamination due to the presence of microorganisms is a serious problem. New food preservation systems are being studied kill or inhibit spoilage and pathogenic that contaminate reduce shelf life products. Chitosan films with potential application have witnessed great developments during last years. cationic polysaccharide ability form possess antimicrobial properties. It water-insoluble but can be dissolved in acidic solutions. In present work, three different acids (acetic, lactic...
Abstract Desoxyribosenucleic acid, DNA, and cellulose molecules self-assemble in aqueous systems. This aggregation is the basis of important functions these biological macromolecules. Both DNA have significant polar nonpolar parts there a delicate balance between hydrophilic hydrophobic interactions. The interactions related to net charges been thoroughly studied are well understood. On other hand, detailed roles hydrogen bonding remained controversial. It found that contributions driving...
Natural-based coagulants have emerged as a reliable option to implement more sustainable operations and management of wastewater treatment plants. This work aims at evaluating the use cationic nanofibrillated celluloses (cNFC) novel bio-based flocculants treat domestic wastewaters by most widely employed process – coagulation/flocculation. Two cNFC samples were prepared with different charge densities tested coagulant/flocculants using water characteristics. The effect cNFCs was studied...
Abstract Gas barrier properties are very relevant in composite materials for applications so diverse such as food packaging, electronics, or old document restoration. In the present work, four different types of cellulose nanofibres (CNFs), two clay minerals used individually (sepiolite) combined (sepiolite + kaolinite), and influence pH, were explored production films. Neat CNFs, only mechanically treated prepared by enzymatic pre-treatment, gave films with good mechanical properties, but...