Ponències/Comunicacions de congressos
http://hdl.handle.net/2117/3962
2024-03-19T01:59:49ZCrosstalk characterization of fabrics elaborated with conductive yarns
http://hdl.handle.net/2117/91038
Crosstalk characterization of fabrics elaborated with conductive yarns
Fernández García, Raúl; Gil Galí, Ignacio; Cano Casas, Francesc; Parés Sabatés, Ferran
The electrical characterization of crosstalk of fabrics elaborated with conductive yarns is investigated. The impact of the source, victim and ground traces location is reported. The experimental results show that the crosstalk in fabrics is higher in comparison with other conductive media. Nevertheless, the results show that the standard strategies to reduce the coupling between lines can be used on fabrics. Doing this, fabrics elaborated with conductive yarns can be used as a conductive media for digital buses, which can help to improve the integration of electronic devices in textile.
2016-10-25T07:26:34ZFernández García, RaúlGil Galí, IgnacioCano Casas, FrancescParés Sabatés, FerranThe electrical characterization of crosstalk of fabrics elaborated with conductive yarns is investigated. The impact of the source, victim and ground traces location is reported. The experimental results show that the crosstalk in fabrics is higher in comparison with other conductive media. Nevertheless, the results show that the standard strategies to reduce the coupling between lines can be used on fabrics. Doing this, fabrics elaborated with conductive yarns can be used as a conductive media for digital buses, which can help to improve the integration of electronic devices in textile.Kinetic study of the indirect electro-oxidation of azo reactive dyes
http://hdl.handle.net/2117/77663
Kinetic study of the indirect electro-oxidation of azo reactive dyes
López Grimau, Víctor; Pepió Viñals, Montserrat; Gutiérrez Bouzán, María Carmen
In this work, an electrochemical treatment in a batch cell with Ti/Pt anode was applied to degrade two
reactive dyes (Color Index Reactive Orange 4 and 13) in the presence of chloride ions, usually used as
dyeing electrolyte. For the two dyes, the kinetic of degradation was studied and also kinetic constants
were modelled. The influence of several factors such as pH, conductivity, dye concentration and reactive
group structure were evaluated. The adjustment of the established models was also studied.
2015-10-14T08:17:23ZLópez Grimau, VíctorPepió Viñals, MontserratGutiérrez Bouzán, María CarmenIn this work, an electrochemical treatment in a batch cell with Ti/Pt anode was applied to degrade two
reactive dyes (Color Index Reactive Orange 4 and 13) in the presence of chloride ions, usually used as
dyeing electrolyte. For the two dyes, the kinetic of degradation was studied and also kinetic constants
were modelled. The influence of several factors such as pH, conductivity, dye concentration and reactive
group structure were evaluated. The adjustment of the established models was also studied.Electrochemical techniques combined with UV irradiation for the treatment and reuse of textile dyeing wastewater
http://hdl.handle.net/2117/76991
Electrochemical techniques combined with UV irradiation for the treatment and reuse of textile dyeing wastewater
Gutiérrez Bouzán, María Carmen; Sala, Mireia; López Grimau, Víctor
2015-09-21T12:10:00ZGutiérrez Bouzán, María CarmenSala, MireiaLópez Grimau, VíctorReuse of textile effluents treated with nanofiltration membranes
http://hdl.handle.net/2117/28136
Reuse of textile effluents treated with nanofiltration membranes
Vilaseca Vallvé, M. Mercedes; Buscio Olivera, Valentina; García Jiménez, María Gracia; Crespi Rosell, Martin; Gutiérrez Bouzán, María Carmen
The reactive dye Cibacron Yellow S-3R was selected for the membrane filtration study, to evaluate the feasibility of nanofiltration membranes to treat textile wastewater. Synthetic effluents were treated by means of two nanofiltration membranes, Hydracore10 and Hydracore50, manufactured by Hydranautics. The membranes provided a high quality permeate, able to be reused in new dyeings. Up to 98% of dye removal was achieved. The influence of salt concentration and pH on membrane treatment was studied. The best conditions for dye removal were pH 3 and 60g·L-1 of NaCl. After the membrane filtration, the treated permeates were reused in new dyeing process. 100% of the obtained permeate was reused to perform different dyeings with four reactive dyes. Finally fabrics dyed with the reused water were evaluated respect to references carried out with softened tap water. The colour differences obtained were lower than 0.5, being 1 the maximum value generally accepted by the industry
2015-06-02T11:03:07ZVilaseca Vallvé, M. MercedesBuscio Olivera, ValentinaGarcía Jiménez, María GraciaCrespi Rosell, MartinGutiérrez Bouzán, María CarmenThe reactive dye Cibacron Yellow S-3R was selected for the membrane filtration study, to evaluate the feasibility of nanofiltration membranes to treat textile wastewater. Synthetic effluents were treated by means of two nanofiltration membranes, Hydracore10 and Hydracore50, manufactured by Hydranautics. The membranes provided a high quality permeate, able to be reused in new dyeings. Up to 98% of dye removal was achieved. The influence of salt concentration and pH on membrane treatment was studied. The best conditions for dye removal were pH 3 and 60g·L-1 of NaCl. After the membrane filtration, the treated permeates were reused in new dyeing process. 100% of the obtained permeate was reused to perform different dyeings with four reactive dyes. Finally fabrics dyed with the reused water were evaluated respect to references carried out with softened tap water. The colour differences obtained were lower than 0.5, being 1 the maximum value generally accepted by the industryValorisation of Moringaoleifera waste: treatment and reuse of textile dye effluents
http://hdl.handle.net/2117/28135
Valorisation of Moringaoleifera waste: treatment and reuse of textile dye effluents
Vilaseca Vallvé, M. Mercedes; López Grimau, Víctor; Gutiérrez Bouzán, María Carmen
This work is focused on the valorisation of an agricultural waste as natural coagulant to treat wastewater from the textile industry. In this paper, the waste of Moringaoleifera oil extraction is used as coagulant to remove five reactive dyes from synthetic textile effluents. Moringaoleifera shows better results for dye removal than conventional treatment of coagulation-flocculation with FeCl3 and polyelectrolyte. Treated water can be reused in new dyeing processes of cotton fabrics with high quality results
2015-06-02T10:38:58ZVilaseca Vallvé, M. MercedesLópez Grimau, VíctorGutiérrez Bouzán, María CarmenThis work is focused on the valorisation of an agricultural waste as natural coagulant to treat wastewater from the textile industry. In this paper, the waste of Moringaoleifera oil extraction is used as coagulant to remove five reactive dyes from synthetic textile effluents. Moringaoleifera shows better results for dye removal than conventional treatment of coagulation-flocculation with FeCl3 and polyelectrolyte. Treated water can be reused in new dyeing processes of cotton fabrics with high quality resultsComparative study of elastomeric and biogenic waste composite materials
http://hdl.handle.net/2117/24465
Comparative study of elastomeric and biogenic waste composite materials
Colom Fajula, Xavier; Cañavate Ávila, Francisco Javier; Rahhali, Ahmed; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
2014-10-24T10:46:24ZColom Fajula, XavierCañavate Ávila, Francisco JavierRahhali, AhmedMacanás de Benito, JorgeCarrillo Navarrete, FernandoChicken feathers based biocomposites: a new sustainable product?
http://hdl.handle.net/2117/20654
Chicken feathers based biocomposites: a new sustainable product?
Molins Duran, Gemma; Álvarez del Castillo, María Dolores; Garrido Soriano, Núria; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
Plastic composites are made of polymers and different reinforcements that originally were synthetic and non-biodegradable. Since 1990’s, many biodegradable composites, formed by a biodegradable matrix and natural fibers, have been proposed. In spite of the advantages of biocomposites, it is important to ponder the technical drawbacks of these natural fibers, mainly from a vegetable origin, and their environmental impacts (EIs). Vegetable fibers imply a land use that can compete with food production. Chicken feathers (CFs), made of keratin fibers, are a potential alternative as they are a waste material, produced in large quantities (800,000 ton/year in EU-27), do not compete with human food production and have been scarcely used up to now. Taking on board these premises, a biocomposite made of PLA and CFs was fabricated at lab-scale as new material. However, before using CFs as reinforcement, sanitizing pretreatments have been envisaged before, due to their quick decay. The EIs of these treatments were experimentally quantified and a cradle-to-gate Life Cycle Assessment (LCA) was performed to evaluate altogether the impacts of manufacturing a technical panel with different content of CFs (up to 35% v/v). As main results, the avoided burdens of the CF waste treatment and the energy consumption for the drying step must be optimized to achieve lower EIs for the preparation of CFs/PLA composites
2013-11-19T13:13:40ZMolins Duran, GemmaÁlvarez del Castillo, María DoloresGarrido Soriano, NúriaMacanás de Benito, JorgeCarrillo Navarrete, FernandoPlastic composites are made of polymers and different reinforcements that originally were synthetic and non-biodegradable. Since 1990’s, many biodegradable composites, formed by a biodegradable matrix and natural fibers, have been proposed. In spite of the advantages of biocomposites, it is important to ponder the technical drawbacks of these natural fibers, mainly from a vegetable origin, and their environmental impacts (EIs). Vegetable fibers imply a land use that can compete with food production. Chicken feathers (CFs), made of keratin fibers, are a potential alternative as they are a waste material, produced in large quantities (800,000 ton/year in EU-27), do not compete with human food production and have been scarcely used up to now. Taking on board these premises, a biocomposite made of PLA and CFs was fabricated at lab-scale as new material. However, before using CFs as reinforcement, sanitizing pretreatments have been envisaged before, due to their quick decay. The EIs of these treatments were experimentally quantified and a cradle-to-gate Life Cycle Assessment (LCA) was performed to evaluate altogether the impacts of manufacturing a technical panel with different content of CFs (up to 35% v/v). As main results, the avoided burdens of the CF waste treatment and the energy consumption for the drying step must be optimized to achieve lower EIs for the preparation of CFs/PLA compositesChicken feathers based composites: a life cycle assessment
http://hdl.handle.net/2117/18215
Chicken feathers based composites: a life cycle assessment
Molins Duran, Gemma; Álvarez del Castillo, María Dolores; Garrido Soriano, Núria; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
Chicken feathers (CFs) are a waste material generated from poultry industry
in large quantities. A composite material constituted of poly lactide and CFs
is proposed in order to prepare a biodegradable composite with low environmental impact.
In order to evaluate its environmental impact, a Life Cycle Assessment
(LCA) is performed. The results show that, from the environmental point of view, the more chicken feathers in the material, the greater is its impact. This is mainly due to the non - inclusion of the impact data regarding CFs current waste management treatments required in accordance with the European Directive CE 1069/2009 (in study) and to the high energy consumption of the pre - treatment stages (cleaning and sanitizing) required to transform CFs waste into a CFs technical material that can be used for the preparation of CFs/PLA composites material, which needs to be optimized.
2013-03-12T14:31:40ZMolins Duran, GemmaÁlvarez del Castillo, María DoloresGarrido Soriano, NúriaMacanás de Benito, JorgeCarrillo Navarrete, FernandoChicken feathers (CFs) are a waste material generated from poultry industry
in large quantities. A composite material constituted of poly lactide and CFs
is proposed in order to prepare a biodegradable composite with low environmental impact.
In order to evaluate its environmental impact, a Life Cycle Assessment
(LCA) is performed. The results show that, from the environmental point of view, the more chicken feathers in the material, the greater is its impact. This is mainly due to the non - inclusion of the impact data regarding CFs current waste management treatments required in accordance with the European Directive CE 1069/2009 (in study) and to the high energy consumption of the pre - treatment stages (cleaning and sanitizing) required to transform CFs waste into a CFs technical material that can be used for the preparation of CFs/PLA composites material, which needs to be optimized.Instrumento quirúrgico de sutura para anastomosis automática del tubo digestivo
http://hdl.handle.net/2117/17794
Instrumento quirúrgico de sutura para anastomosis automática del tubo digestivo
Tornero García, José Antonio; Suárez Feijóo, Raúl; Cano Casas, Francesc; Montaño Sarria, Andrés Felipe; López Cano, Manuel
En la cirugía digestiva, una anastomosis del intestino consiste en la reconstrucción del tubo digestivo por unión de dos cabos tras la resección de una porción del mismo. Este procedimiento, de común aplicación en diversos tipos de intervención quirúrgica se realiza actualmente mediante la aplicación de grapas metálicas debido a la complejidad inherente de la realización de una sutura manual. La automatización del proceso de sutura mediante un dispositivo diseñado a tal efecto supondría una notable mejora en el procedimiento quirúrgico asociado y posteriormente en la calidad de vida del paciente, ya que las grapas metálicas empleadas actualmente presentan diversos inconvenientes. El diseño de este dispositivo presenta gran complejidad debido al rigor de los requisitos funcionales y a la complejidad del entorno de funcionamiento así como las características de los materiales que intervienen en el proceso.En el presente trabajo se describe el desarrollo de un prototipo de dispositivo para anastomosis automática mediante sutura, evaluando su funcionalidad a nivel de laboratorio, con objeto de probar su validez
2013-02-15T13:50:44ZTornero García, José AntonioSuárez Feijóo, RaúlCano Casas, FrancescMontaño Sarria, Andrés FelipeLópez Cano, ManuelEn la cirugía digestiva, una anastomosis del intestino consiste en la reconstrucción del tubo digestivo por unión de dos cabos tras la resección de una porción del mismo. Este procedimiento, de común aplicación en diversos tipos de intervención quirúrgica se realiza actualmente mediante la aplicación de grapas metálicas debido a la complejidad inherente de la realización de una sutura manual. La automatización del proceso de sutura mediante un dispositivo diseñado a tal efecto supondría una notable mejora en el procedimiento quirúrgico asociado y posteriormente en la calidad de vida del paciente, ya que las grapas metálicas empleadas actualmente presentan diversos inconvenientes. El diseño de este dispositivo presenta gran complejidad debido al rigor de los requisitos funcionales y a la complejidad del entorno de funcionamiento así como las características de los materiales que intervienen en el proceso.En el presente trabajo se describe el desarrollo de un prototipo de dispositivo para anastomosis automática mediante sutura, evaluando su funcionalidad a nivel de laboratorio, con objeto de probar su validezEffect of continuous post-setting on crystallinity and thermomechanical behaviour of False-Twist Textured Polylactide multifilaments
http://hdl.handle.net/2117/17419
Effect of continuous post-setting on crystallinity and thermomechanical behaviour of False-Twist Textured Polylactide multifilaments
Manich Bou, Albert M.; Carilla Auguet, Josep; López Santana, Daniel; Baena, Barbara; Riba Moliner, Marta; Prieto Fuentes, María Remedios; Montero Palacios, Lucila; Cayuela Marín, Diana
Polylactide (PLA) multifilaments, false-twist textured at different temperatures (135, 150 and 165ºC) and draw ratios (1.30, 1.35 and 1.40) have been stabilized by a continuous post setting treatment at 50 m/min and 100ºC using a specially designed chamber. The crystallinity of the original textured filaments and those of the stabilized ones has been measured. The effect of post setting on the thermomechanical behaviour according to the texturing conditions has been studied. The relationship between crystallinity and both relaxation shrinkage and maximum phase lag temperature have been pointed out
2013-01-18T11:59:58ZManich Bou, Albert M.Carilla Auguet, JosepLópez Santana, DanielBaena, BarbaraRiba Moliner, MartaPrieto Fuentes, María RemediosMontero Palacios, LucilaCayuela Marín, DianaPolylactide (PLA) multifilaments, false-twist textured at different temperatures (135, 150 and 165ºC) and draw ratios (1.30, 1.35 and 1.40) have been stabilized by a continuous post setting treatment at 50 m/min and 100ºC using a specially designed chamber. The crystallinity of the original textured filaments and those of the stabilized ones has been measured. The effect of post setting on the thermomechanical behaviour according to the texturing conditions has been studied. The relationship between crystallinity and both relaxation shrinkage and maximum phase lag temperature have been pointed out