A5025934707- biodegradable polymer synthesis and properties
- Advanced Cellulose Research Studies
- Natural Fiber Reinforced Composites
- Electrospun Nanofibers in Biomedical Applications
- 3D Printing in Biomedical Research
- Nanocomposite Films for Food Packaging
- Nerve injury and regeneration
- Cellular Mechanics and Interactions
- Essential Oils and Antimicrobial Activity
- Neuroscience and Neural Engineering
- Skin Protection and Aging
- Additive Manufacturing and 3D Printing Technologies
- Dyeing and Modifying Textile Fibers
- Photodynamic Therapy Research Studies
- Tissue Engineering and Regenerative Medicine
University of Aveiro
2018-2023
The use of active packaging technologies and biopolymeric materials are among the emerging trends for implementation sustainability in food industry. Thus, herein, bioactive transparent nanocomposite films thermoplastic starch (TPS) reinforced with bacterial nanocellulose (BNC) (1%, 5% 10% w/w, relative to starch) enriched gallic acid (GA) (1 1.5% were prepared by solvent casting method. addition BNC (≥5% w/w) GA enhanced both mechanical properties (Young's Modulus: 1.2–2.0 GPa vs. 1.0 TPS;...
Biopolymeric injectable hydrogels are promising biomaterials for myocardial regeneration applications. Besides being biocompatible, they adjust themselves, perfectly fitting the surrounding tissue. However, due to their nature, biopolymeric usually lack desirable functionalities, such as antioxidant activity and electrical conductivity, in some cases, mechanical performance. Protein nanofibrils (NFs), lysozyme (LNFs), proteic nanostructures with excellent performance activity, which can work...
In this study, alginate nanocomposite hydrogel bioinks reinforced with lysozyme nanofibers (LNFs) were developed. Alginate-LNF (A-LNF) suspensions different LNF contents (1, 5 and 10 wt.%) prepared pre-crosslinked 0.5% (w/v) CaCl2 to formulate A-LNF inks. These inks exhibit proper shear-thinning behavior good recovery properties (~90%), the pre-crosslinking step playing a crucial role. fully crosslinked hydrogels (with 2% CaCl2) that mimic 3D printing scaffolds prepared, it was observed...
Green composites, composed of bio-based matrices and natural fibers, are a sustainable alternative for composites based on conventional thermoplastics glass fibers. In this work, micronized bleached Eucalyptus kraft pulp (BEKP) fibers were used as reinforcement in biopolymeric matrices, namely poly(lactic acid) (PLA) poly(hydroxybutyrate) (PHB). The influence the load aspect ratio mechanically treated microfibers morphology, water uptake, melt flowability, mechanical thermal properties green...
All-Cellulose Composites (ACCs) with cellulose derivatives have been neglected in the composite industry due to their high brittleness, low impact strength, and flowability. Epoxidized vegetable oils are well-known plasticizers for several polymers composites but never exploited on production of ACCs. The present work investigates potential an epoxidized linseed oil (ELO) as a cost-effective additive enhance properties processability ACCs made acetate butyrate (CAB) micronized Eucalyptus...
This study reports the development of nanocomposites based on poly( ɛ ‐caprolactone) (PCL) and cellulose nanofibrils (CNF) modified with cationic latex nanoparticles. The physical adsorption these water‐based latexes surface CNF was studied as an environment‐friendly strategy to enhance compatibility a hydrophobic polymeric matrix. are composed amphiphilic block copolymers N , ‐dimethylaminoethyl methacrylate‐ co ‐methacrylic acid) hydrophilic block, either poly(methyl methacrylate) or n...
Antimicrobial photodynamic therapy (aPDT) is a potent tool to surpass the global rise of antimicrobial resistance; still, effective topical administration photosensitizers remains challenge. Biopolymer-based adhesive films can safely extend residence time photosensitizers. However, their wide application narrowed by limited water absorption capacity and gel strength. In this study, pullulan-based with switchable character (from solid film an hydrogel) were developed. This was accomplished...
Green composites made of bioplastics reinforced with natural fibers have gained considerable attention over recent years. However, the use in usually compromise some key properties, such as impact strength and processability final materials. In present study, two distinct additives, namely an epoxidized linseed oil (ELO) a sugar-based surfactant, viz. GlucoPure® Sense (GPS), were tested composite formulations poly(lactic acid) (PLA) or poly(hydroxybutyrate) (PHB) micronized pulp fibers. Both...
The global demand for sustainable textile fibers is growing and has led to an increasing research interest from both academia industry find effective solutions. In this research, regenerated wood pulp were functionalized with glycidyltrimethylammonium chloride (GTAC) produce modified cellulose cationic pending groups improved dye uptake. resultant a degree of substitution (DS) between 0.13 0.33 exhibited distinct morphologies contact angles water ranging 65.7° 82.5° the DS values 0.33,...