284 documents found, page 1 of 29
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...
Case study: Evaluating the usefulness of various AI tools in fashion design
Oliveira, Adriana; Morais, Adrielle; Lopes, Ana Catarina; Castro, Daniela; Zille, AndreaSociety is living at a rapid pace of technological and scientific development. Nowadays, it is possible to watch videos, write papers, create products, and build brands using artificial intelligence (AI). This study describes the processes of developing a project to create a clothing collection with the aid of AI, using software such as ChatGPT-4, Yoona AI, The New Black, Designs.AI, and Ideas Generator. This a...
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...
Novel textile dyeing process: The use of natural deep eutectic solvents (NADES)
Vieira, Bárbara Marques; Silva, Carla Manuela Costa; Silva, C.; Zille, Andrea[Excerpt] Textile dyeing is recognized for its substantial environmental impact [1, 2]. In response to this challenge, there is an increasing focus on eco-friendly alternatives, including the use of natural dyes derived from plants that not only provide coloration, but also impart unique functional properties to textiles[3]. However, these types of dyes typically exhibit poor color fastness when exposed to wash...
Application of prodigiosin extracts in textile dyeing and novel printing proces...
Alves, Cátia Sofia Pereira; Soares-Castro, pedro; Fernandes, Rui Daniel Vilaça; Pereira, Adriana; Rodrigues, Rui; Fonseca, Ana Rita; Santos, Nuno C.The textile industry’s reliance on synthetic dyes contributes significantly to pollution, highlighting the need for sustainable alternatives like biopigments. This study investigates the production and application of the biopigment prodigiosin, which was produced by Pseudomonas putida with a yield of 1.85 g/L. Prodigiosin was prepared under acidic, neutral, and alkaline conditions, resulting in varying protonat...
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...
Biosynthesis of silver nanoparticles on polypropylene nonwovens: towards antimi...
Marković, Darka; Tomšič, Brigita; Zille, Andrea; Ribeiro, Ana Isabel Ferreira; Ilic‐Tomic, Tatjana; Tadić, Vanja; Simončič, Barbara; Radetić, MajaThe utilization of disposable face masks is an essential approach to mitigate the transmission of microorganisms. Composed mainly of polypropylene (PP) nonwoven material, these masks do not exhibit any antimicrobial properties. This study examines the feasibility of employing Ag-based nanoparticles (NPs) as an antimicrobial agent. To activate the chemically inert PP samples, corona discharge was applied at atmo...