A5064312383- Dyeing and Modifying Textile Fibers
- Microplastics and Plastic Pollution
- Textile materials and evaluations
- Surface Modification and Superhydrophobicity
- Natural Fiber Reinforced Composites
- Electrospun Nanofibers in Biomedical Applications
- Additive Manufacturing and 3D Printing Technologies
- Agricultural and Food Sciences
- Plasma Applications and Diagnostics
- Enzyme-mediated dye degradation
- Advanced Cellulose Research Studies
- Nanoparticles: synthesis and applications
- Academic Research in Diverse Fields
- Advanced Sensor and Energy Harvesting Materials
- Business and Management Studies
- Innovations in Concrete and Construction Materials
- Electrohydrodynamics and Fluid Dynamics
- Cardiovascular Disease and Adiposity
- Plant Surface Properties and Treatments
- biodegradable polymer synthesis and properties
- Antimicrobial agents and applications
- Polymer Nanocomposite Synthesis and Irradiation
- Graphene and Nanomaterials Applications
- Wound Healing and Treatments
- Nanomaterials and Printing Technologies
Université Libre de Bruxelles
2023-2025
Universidade Federal do Rio Grande do Norte
2014-2023
Universidade Federal de Santa Catarina
2017-2023
Polydoro Ernani de São Thiago University Hospital
2021
Universidade Estadual Paulista (Unesp)
2012-2020
University of Minho
2010-2013
Plasma technology applied to textiles is a dry, environmentally- and worker-friendly method achieve surface alteration without modifying the bulk properties of different materials. In particular, atmospheric non-thermal plasmas are suited because most textile materials heat sensitive polymers applicable in continuous processes. last years plasma has become very active, high growth research field, assuming great importance among all available material modifications industry. The main...
This work studies the surface characteristics, antimicrobial activity, and aging effect of plasma-pretreated polyamide 6,6 (PA66) fabrics coated with silver nanoparticles (AgNPs), aiming to identify optimum size nanosilver exhibiting antibacterial properties suitable for manufacture hospital textiles. The release bactericidal Ag(+) ions from a 10, 20, 40, 60, 100 nm AgNPs-coated PA66 was function particles' size, number, aging. Plasma pretreatment promoted both ionic covalent interactions...
Gold nanoparticles (AuNPs), chemically synthesized by citrate reduction, were for the first time immobilized onto chitosan-treated soybean knitted fabric via exhaustion method. AuNPs successfully produced in form of highly spherical, moderated polydisperse, stable structures. Their average size was estimated at ≈35 nm. Successful immobilization chitosan and confirmed alterations fabric’s spectrophotometric reflectance spectrum detection nitrogen gold, non-conjugated C=O stretching vibrations...
Abstract The use of microcapsules has increased in several different areas, namely, textile applications. They have been used as a possible means introducing new properties, medical care by antibiotics, skin moisturizers, and other drugs for thermal comfort. In this study, we examined the influence dielectric barrier discharge (DBD) plasma treatment on adhesion phase‐change material (PCM) wool fabric. Several experimental techniques were to evaluate surface modification after microcapsules'...
Abstract The effect on the deposition of three different size silver nanoparticles (AgNPs) onto a polyamide 6,6 (PA) fabric pre‐treated using air dielectric barrier discharge (DBD) plasma was investigated. SEM, EDS, and XPS analysis confirm that smaller is diameter AgNPs, higher amount adsorbed NPs PA. DBD treatment PA induces threefold increase in Ag adsorption. result confirms dual wettability treated substrate. AgNPs slightly enhance hydrophobicity surface and, at same time, protect it...
Background/Aims Experimental and clinical studies have shown the direct toxic effects of cigarette smoke (CS) on myocardium, independent vascular effects. However, underlying mechanisms are not well known. Methods Wistar rats were allocated to control (C) groups. CS exposed for 2 months. Results After that morphometric, functional biochemical parameters measured. The echocardiographic study showed enlargement left atria, increase in ventricular systolic volume reduced function. Within...
Melanocytic lesions are the most common cause of ocular neoplasia seen in cats. Melanocytomas melanocytic with benign behavior. What differentiates high malignant potential from those low is histopathological analysis material, and it not possible to define their based on macroscopic view lesion. The aim this study was report a case epibulbar melanocytoma an adult, mixed breed, neutered cat, increase volume region upper eyelid left eye, blackish color. We opted for surgical approach tumor,...
This paper discusses the role of natural fibers on aligning architectural production, both aesthetically and technologically, with site's local culture, economy, diversity geographic singularities. is a process that requires association contemporary traditional techniques, demanding architects' creativity textile engineering support. While contributing to maintenance biodiversity, revival construction techniques economic development, it may lead more sustainable diverse non-vernacular...
The objective of this study is to analyze the impact behavior on basis energy approach weft knitted structures, namely a jersey composite and an auxetic using high performance yarns. Weft fabrics were produced with same structural machine parameters, 100% para-aramid hybrid (47% 53% polyamide) structure. Composite fabrication was achieved through hand lay-up epoxy resin. Negative Poisson ratio reinforcing fabric transferred from developed. Results obtained by drop weight dart test show that...
This investigative work was carry out through a factorial planning, using Design of Experiment (DoE) in order to evaluate the impact performance properties Kevlar® woven structure impregnated with Non-Newtonian Fluids (NNF). Pull and drop tower tests were performed. The pull test showed that strength values NNF composition 3 better (10.55 N) when compared others (1 2). samples highest concentration nanoparticles (3OR) exhibited best behavior respect penetration depth for P1 (19.5%) S1...
Ceramic porous membranes sintered at two different temperature using polyvinyl alcohol and ethylene glycol as binders, composed of types α-alumina with particle sizes were investigated for the microfiltration a textile effluent containing indigo dye, auxiliaries, heavy metals, oils, solids. The physicochemical properties evaluated. X-ray diffraction, energy dispersive fluorescence spectroscopy, differential scanning calorimetry, thermogravimetric analysis confirm that thin membrane is high...
ABSTRACT Enzyme‐mediated in situ functionalization of cotton fibers was studied using laccase. Caffeic acid and morin were used as reactive phenolic substrates for laccase further employed to the modification fiber surfaces. Laccase‐mediated oxidation polymerization reactions caffeic monitored by ultraviolet–visible spectroscopy. During wetting process, initial cationization surfaces poly(diallyldimethylammonium chloride) followed enzymatic treatment with resulted ineffective polymer...
ABSTRACT Chitosan and alginate are biopolymers with interesting bioactivity that can be transferred to cotton fibers for medical health care applications. These polymers in solution attached onto by a layer‐by‐layer technique. Confirmation of polymer deposition was verified morphology analysis, coomassie blue dye coloration, contact angle water on fibers. Also, weight gain level whiteness after each layer were determined. Antimicrobial activity treated samples against E. coli S. aureus...
In this work, a plain weave composed by 50% polyester and cotton (PES/CO) was functionalized using two polyelectrolytes, in order to modify its surface provide dyeing with an uncommon dye class for fibers. Several techniques of characterization were used study the effects caused interaction between polyelectrolytes (Chitosan PDDACl) PES/CO fabric, such as: X-ray Photoelectronic Spectroscopy (XPS), solution drop absorption, Scanning Electron Microscopy (SEM) whiteness Berger degree. Good...
In this work, physical, chemical and morphological modifications of three different polyamide 6.6 (PA6.6) fabrics were investigated using double barrier dielectric (DBD) plasma treatment. Several techniques characterization used to study the effects caused by interaction between discharge fabrics, such as: contact angle, water drop adsorption, Energy Dispersive Spectroscopy (EDS), X-ray Photoelectron (XPS), Scanning Electron Microscopy (SEM), whiteness Berger degree tensile strength. All...