507 documents found, page 1 of 51
Reinforcing cotton recycled fibers for the production of high-quality textile s...
Azevedo, Tiago Jorge Mendonça Pinto; Silva, Ana Catarina; Machado, Gonçalo; Chaves, Diego Morais; Ribeiro, Ana Isabel Ferreira; Fangueiro, RaúlThe textile industry is under increasing pressure to adopt sustainable practices due to the significant environmental impacts associated with fiber production, including high energy consumption, water usage, and substantial greenhouse gas emissions. The recycling of textile waste, particularly cotton, is a promising solution that has the potential to reduce landfill waste and decrease the demand for virgin fibe...
Evaluation of tensile properties in in-plane auxetic carbon/epoxy and carbon-gl...
Veloso, Cristiano; Mota, Carlos; Cunha, Fernando; Sousa, Jose; Dias, Gustavo; Uribe, Braian Esneider Buitrago; Fangueiro, RaúlAuxetic laminates, i.e. with a negative Poisson’s ratio (NPR), show great engineering promise, with enhancements in shear resistance, fracture toughness, energy absorption, and delamination and damage extension limitation. This study focuses on the tensile properties of in-plane (IP) NPR fibre-reinforced polymer (FRP) laminates, namely carbon/epoxy (C/E) and carbon-glass/epoxy (C-G/E) laminates, with lay-up seq...
Polycaprolactone-based fibrous scaffolds reinforced with cellulose nanocrystals...
Rocha, Joana M.; Sousa, Rui Pedro Carvalho Lima; Sousa, Diogo; Tohidi, Shafagh Dinparast; Ribeiro, Artur; Fangueiro, Raúl; Ferreira, Diana P.Anterior cruciate ligament (ACL) injuries pose significant challenges, driving the need for innovative repair strategies. Tissue engineering (TE) has emerged as a promising field for ACL injuries. Wet spinning is a filament production technique that enables precise control over filament alignment, diameter, and porosity, making it suitable for developing new scaffolds for ACL injuries. This study develops fibro...
Multifunctional fibrous structures for advanced personal protective equipment b...
Araújo, Joana Carolina Carvalho; Fangueiro, Raúl; Ferreira, Diana P.[Excerpt] Introduction In the last years, an unprecedented increase in the development of products and technologies to protect the human being has been verified. Now, more than ever, the world population is exposed to several threats, harmful totheir well-being and health. [...]; This work was funded by the European Regional Development Fund through the Operational Competitiveness Program and the National Found...
Localized cancer photodynamic therapy approach based on core–shell electrospun ...
Costa, Sofia Maria Soares; Lourenço, Leandro M. O.; Calhelha, Ricardo C.; Calejo, Isabel; Barrias, Cristina C.; Fangueiro, Raúl; Ferreira, Diana P.Photodynamic therapy (PDT) has been considered a promising treatment for several types of cancer, including cervical cancer. Localized drug delivery systems (DDSs) based on nanofibers produced by electrospinning have emerged as a powerful platform to carry and deliver photosensitizers (PSs) onto or adjacent to the tumor site, thereby promoting higher therapeutic efficacy and reducing the side effects to healthy...
Design of braided fibrous structure (scaffold) for treatment of spinal injury u...
Aguiar Souza, Ivis; Kohan, Lais; Silva Filho, Maurício José da; Fangueiro, Raúl; Ferreira, Diana P.Parametric design operates as an indispensable mechanism for the fabrication of elaborate geometries. In recent years, there has been an increase in the incidence of injuries to the spine and spinal cord. The most common causes of spinal cord injuries are traffic accidents, falls, high-impact sports, and acts of violence. The objective of this work was to graphically develop braided textile structures suitable ...
Local drug delivery systems based on biodegradable nanofibers for cancer photod...
Costa, Sofia Maria Soares; Fangueiro, Raúl; Ferreira, Diana P.[Excerpt] Introduction Cancer still represents one of the leading causes of death worldwide. Hence, there is an urgent need to explore novel strategies to enhance cancer therapy efficiency and minimize the side effects, improving the patient’s life quality. Photodynamic therapy (PDT) is a promising minimally invasive and localized therapy involving the combined effect of photoactive molecules, called photosensi...
Upcycling fishing net waste and metal oxide from electroplating waste into alga...
Barros, Daniel; Nobre, Luís; Antunes, Joana; Bessa, João; Cunha, Fernando Eduardo Macedo; Mota, Carlos; Gomes, Fernanda Isabel AntunesPlastic waste, especially discarded fishing nets, and electroplating sludges pose significant environmental challenges, impacting marine ecosystems and contributing to pollution. In alga cultivation, invasive microorganisms often hinder growth, necessitating strategies to combat these issues. This study aimed to develop recycled substrates for alga cultivation by repurposing fishing nets and enhancing their sur...
Engenharia do Futuro: inovação e sustentabilidade
Fangueiro, Raúl; Vicente, A. A.; Rodrigues, L. R.; Arezes, P.[Excerto] A palavra ‘engenheiro’ vem do latim Ingenium, ou seja, “aquele que tem engenho”. O termo “engenho” refere-se à capacidade de criar, inovar e solucionar problemas técnicos e complexos. Os engenheiros sempre foram reconhecidos como indivíduos com a capacidade de encontrar soluções para problemas quotidianos, aplicando ciência, matemática e talento para fazer o que nunca foi feito, ir aonde ninguém jamai...
Flexible pressure and temperature microsensors for textile-integrated wearables
Santos, Dimitri Emmanuel dos; Queiroz, José Bento; Garcia, Inês Sofia; Vieira, João; Fernandes, José; Sotgiu, Edoardo; Minas, Graça; Bouçanova, MariaEnvironmental factors, such as pressure and temperature, are known to contribute to the formation of ulcers that seriously affect bedridden individuals. Researchers have proposed several technologies to achieve the long-term monitoring of those parameters, usually relying on sensing mats, which poses difficulties in correlating the measurements with specific parts of the body. In this work, we aim to develop mi...