118 documents found, page 1 of 12
Early-stage enzymatic treatments of scutched hemp fiber: impact on fiber proper...
Costa, Rita V.; Ferreira, Sílvia; Leite, Liliana; Araújo, Joana Carolina Carvalho; Ferreira, Diana P.; Bessa, João; Cunha, Fernando Eduardo MacedoAlthough hemp fibers are widely recognized for their sustainability benefits, their intrinsic stiffness and significant structural heterogeneity present processing challenges that limit their applicability in textile manufacturing, particularly in high-quality spinning systems such as flax wet spinning. To overcome these limitations, this study investigates early-stage enzymatic treatments of scutched hemp fibe...
Sustainable shear wave elastography medical phantoms: waste-based fibrous struc...
Santos, Ana Isabel Zão; Rocha, Sofia Gomes; Fernandes, Nuno Alexandre Tavares Campos; Alves, Diana Isabel Sousa; Ferreira, Diana P.Tissue-mimicking phantoms that accurately replicate human tissue are crucial for validating and optimizing elastography systems and developing new treatment methods. The use of waste-based fibrous structures has the dual benefits of waste reduction and economic viability, mitigating the environmental consequences associated with the textile industry and, thus, posing a particularly interesting avenue of researc...
Fibre-to-fibre recycling in textiles: strategies, limitations and industrial pe...
Silva, Ana Catarina; Barreiros, Mariana P.; Azevedo, Tiago Jorge Mendonça Pinto; Brás, Duarte Rodrigues; Teixeira, Marta A.; Fangueiro, RaúlTextile-to-textile recycling is increasingly recognised as essential to reduce the environmental footprint of the textile sector, yet fibre-to-fibre routes remain constrained by complex composition of fibre blends, chemical finishes and the degradation of fibre quality during repeated processing. This review provides a comprehensive overview of recycling strategies for major textile fibres, cotton, polyester, v...
Electrospun fibrous architectures for localized delivery of photosensitizers in...
Gomes, Cátia V.; Costa, Sofia Maria Soares; Oliveira, João Maria Silva; Calhelha, Ricardo C.; Lourenço, Leandro M. O.; Fangueiro, RaúlPhotodynamic therapy (PDT) is a promising localized strategy for the treatment of cervical cancer, ranking as the fourth most common cancer among women worldwide. The integration of photosensitizers (PSs) in localized drug delivery systems (DDSs), particularly in electrospun nanofibers, holds tremendous potential to overcome the drawbacks of their systemic administration. Exploring multilayer fibrous architectu...
Design of braided fibrous scaffold for spinal cord injury applications: using R...
Aguiar Souza, Ivis; Kohan, Lais; Silva Filho, Maurício José da; Fangueiro, Raúl; Ferreira, Diana P.Spinal cord injuries (SCI) result from causes such as traffic accidents and falls. Scaffold construction strategies are limited in design and functionality due to fabrication methods. The objective of this work was to 3D model braided textile structures (scaffolds) suitable for assisting in the treatment of SCI. Using parametric modelling in Rhinoceros with Grasshopper, the study integrates design thinking and ...
Green vibrations: dynamic stiffness and constitutive modelling of recycled nonw...
Fernandes, Nuno Alexandre Tavares Campos; Alves, Diana Isabel Sousa; Ruivo, Francisco; Ferreira, Diana P.; Carvalho, Óscar Samuel NovaisThe increasing concern over environmental sustainability has driven the exploration of waste-based materials as innovative engineering applications. Dynamic compressive mechanical tests were performed at varying frequencies to evaluate energy dissipation and stiffness. The results show that compressed samples exhibit higher Young's modulus, tensile strength, and dynamic stiffness compared to their uncompressed ...
The development of technical yarns containing recycled textile fibres and natur...
Azevedo, Tiago Jorge Mendonça Pinto; Silva, Ana Catarina; Brás, Duarte Rodrigues; Guimarães, Renato Filipe Costa Rodrigues; Ferreira, Diana P.The textile industry is one of the most polluting sectors globally. In 2023, the global production and consumption of textiles reached approximately 100 million tonnes, with most of these textiles being disposed of in landfills or incinerated. In response to the increasingly demanding EU regulations, the mitigation and valorisation of textile industry waste has become imperative. Recycling technologies can be r...
Selective elastane removal using DMSO–DBN under moderate temperatures: from pur...
Azevedo, Tiago Jorge Mendonça Pinto; Silva, Ana Catarina; Chaves, Diego Morais; Fangueiro, Raúl; Ferreira, Diana P.Selective removal of elastane from textile blends is a critical factor for fibre-to-fibre recycling, since even low elastane content compromises the mechanical shredding efficiency, contaminates recycled streams, and limits the spinnability of recovered fibres. In this work, we investigate dimethyl sulfoxide (DMSO) as a solvent system for elastane degradation under moderate temperatures, both in the absence and...
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...
Technical yarns containing recycled fibers from pre-consumer textile residues
Azevedo, Tiago Jorge Mendonça Pinto; Silva, Ana Catarina; Brás, Duarte Rodrigues; Guimarães, Renato Filipe Costa Rodrigues; Ferreira, Diana P.The textile industry is widely recognized as one of the world's most polluting industries. It produces a considerable amount of waste, including residual waste from the manufacturing process itself, as well as waste resulting from the utilization of products by consumers and industrial waste from production activities (i.e. post-industrial and pre- and post-consumer waste). In the specific case of the post-indu...