131 documents found, page 1 of 14
Elastic bands antimicrobial functionalization
Ferreira, Ana Francisca; Fernandes, Rui Daniel Vilaça; Vieira, Bárbara Marques; Peixoto, Joaquim Jorge Gomes; Felgueiras, Helena Prado; Zille, AndreaSustainability of textile products encompasses the extension of their useful life period during which they adequately serve their intended purpose. Antimicrobial finishings can prevent microbial damage and extend textile lifespan. Even though the functionalization and characterization processes have been thoroughly described for woven, knitted and non-woven textiles, there is a lack of information regarding ela...
DBD plasma-treated polyester fabric coated with doped PEDOT:PSS for thermoregul...
Magalhães, Cátia; Ribeiro, Ana Isabel Ferreira; Rodrigues, Rui; Meireles, Ângela; Alves, Alexandra C.; Rocha, João Pedro Costa; Pedroso de Lima, FábioThe manufacturing process of thermoregulation products with polyester (PES) fabric and conductive polymers such as poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) with proper wearability, comfort, and high performance is still a challenge due to low adhesion, environment instability and nonuniform coatings. This study presents a simple and effective method for producing thermoreg...
Bacterial nanocellulose as a versatile scaffold for biomedical applications: sy...
Melro, Liliana Sofia Silva Ferreira Pinto; Alves, Cátia Sofia Pereira; Fernandes, Marta Susana Machado; Rocha, Sofia Gomes; Mehravani, BehnazBacterial nanocellulose (BNC) consists of nanofibres of cellulose randomly entangled during their synthesis by particular bacterium cells during fermentation. Thus, it may be regarded as a unique three-dimensional of pure cellulose that is consolidated during the generation of the fibres by their microbiological factories. The metabolic synthesis and purification processes are approached, underscoring its poten...
Plasma-treated bacterial nanocellulose-lignin composites for neuralgia implants
Alves, Cátia Sofia Pereira; Melro, Liliana Sofia Silva Ferreira Pinto; Fernandes, Marta Susana Machado; Padrão, Jorge; Moldes, Diego[Excerpt] This research envisages the use of bacterial nanocellulose (BNC) as a biomaterial for implants to mitigate neuralgias, focusing on the material's inherent limitations. BNC is widely valued for its excellent mechanical properties, ease of modification, and non-anthropogenic degradability [1]. However, its absent electrical conductivity, insufficient antimicrobial activity, and weak interaction with neu...
Active wound dressing of electrospun lignin/cellulose acetate on cotton gauze
Mehravani, Behnaz; Fernandes, Marta Susana Machado; Alves, Cátia Sofia Pereira; Melro, Liliana Sofia Silva Ferreira Pinto; Fernandes, Rui Daniel VilaçaWounds that do not heal within a reasonable time frame can be considered as chronic wounds and it is estimated that 1.51 to 2.21 per 1000 people worldwide are suffering from this condition [1]. Chronic wounds can be characterized as permanently in the inflammatory stage. This stage comprises a continuing influx of neutrophils that release cytotoxic enzymes, reactive oxygen species (ROS), and inflammatory mediat...
Cellulosic fabrics bio-finishing with natural products
Fernandes, Rui Daniel Vilaça; Magalhães, Renata Sofia Vieira; Rodrigues, Soraia Cristina Vieira; Vieira, Bárbara Marques; Alves, Cátia Sofia Pereira[Excerpt] Results: Propolis (a byproduct of beehives), Kraft lignin (extracted from trees or plants), and olive pomace (a byproduct of olive oil production) were used to confer antimicrobial properties to cotton (CO), linen (CL), and hemp (CH) fabrics. Fabrics functionalized with propolis can be classified as weak disinfectants, and olive pomace fabrics are considered strong decontaminants, both against Staphyl...
In vitro optimization of photobiomodulation and ultrasound stimulation protocol...
Monteiro, Francisca; Oliveira, Sofia; Marques, Carlos; Papadimitriou, Georgia; Silva, Joana M.; Padrão, Jorge; Sotiropoulos, Ioannis; Catarino, SusanaThe effectiveness of transcranial photobiomodulation (tPBM) and ultrasound stimulation (tUS) to mitigate different neuropathological mechanisms and stimulate neuroprotective responses has been vastly demonstrated in preclinical disease models. However, the translation into clinics is still suboptimal, revealing the need for more solid basic research to ascertain the most effective stimulation parameters to modu...
An eco-friendly approach for the separation and reusage of pre-consumer polycot...
Pedroso de Lima, Fábio; Alves, Cátia Sofia Pereira; Gomes-Dias, Rita; Fernandes, Marta Susana Machado; Vieira, Bárbara Marques; Rodrigues, RuiOne of the most challenging features of textile recycling is the widespread use of mixed fibre blends, which hardens the task of effective separation. A mixture of aqueous sodium hydroxide and a cosolvent was applied to a polycotton preconsumer fabric to promote the chemical separation of polyester (PES) and cotton (CO). The feasibility of reusing the hydrolytic solutions was tested, where dimethyl sulfoxide (D...
Gel electrolytes in the development of textile-based power sources
Ribeiro, Ana Isabel Ferreira; Alves, Cátia Sofia Pereira; Fernandes, Marta Susana Machado; Abreu, José Emanuel Ferreira; Pedroso de Lima, FábioThe interest in flexible and wearable electronics is increasing in both scientific research and in multiple industry sectors, such as medicine and healthcare, sports, and fashion. Thus, compatible power sources are needed to develop secondary batteries, fuel cells, supercapacitors, sensors, and dye-sensitized solar cells. Traditional liquid electrolytes pose challenges in the development of textile-based electr...
Current state of elastography research in multiple anatomical structures and re...
Santos, Ana Isabel Zão; Rocha, Sofia Gomes; Carneiro, Beatriz; Fernandes, Nuno Alexandre Tavares Campos; Padrão, Jorge; Carvalho, Óscar Samuel NovaisPurpose: Ultrasound elastography (USE) has gained significant attention in recent years as a non-invasive method for assessing tissue elasticity, offering the potential to improve diagnostic accuracy. With the quick development of this technique, there is a growing demand for calibrated phantoms to validate elastography systems. Therefore, the aim of this review was to provide insights into the current state of...