Now showing items 21-40 of 61

    • Determination of formaldehyde content in leather: Standard EN ISO 17226, revision and possible improvements 

      Cuadros Domènech, Sara; Font Vallès, Joaquim; Cuadros Domènech, Rosa Maria; Izquierdo, Francina; Ollé Otero, Lluís; Marsal Monge, Agustín (2016-07)
      Article
      Restricted access - publisher's policy
      The retanning process is the main application of formaldehyde in the tanning industry since formaldehyde participates in two groups of synthetic organic tanning agents: syntans and resins. Resins can be hydrolysed with the ...
    • Determination of functional groups of humic derivatives as tanning-retanning agents 

      Bacardit Dalmases, Anna; Shendryck, Alexander; Morera Prat, Josep Maria; Bou Serra, Jordi; Ollé Otero, Lluís (2011-11-28)
      Article
      Restricted access - publisher's policy
      Three types of humic acids of different sources have been analysed in order to quantify the functional groups that may be liable to react with the proteins of leather. The quantification serves to determine the extent to ...
    • Determination of hexavalent chromium in leather by ion-exchange chromatography 

      Font Vallès, Joaquim; Perez Quiñones, Carmen; Reyes Farrera, María R.; Cobos, Mireia; Combalia Cendra, Felip; Marsal Monge, Agustí (2014-09-01)
      Article
      Restricted access - publisher's policy
      The determination of traces of hexavalent chromium in leather and in leather consumer goods is carried out by ion-exchange chromatography. Samples are extracted at pH7.5-8 with a phosphate buffer, according to the method ...
    • Development of a new leather intermediate: wet-bright with a high dye affinity 

      Bacardit Dalmases, Anna; González, Maria; van der Burgh, Stefan; Armengol, Jordi; Ollé Otero, Lluís (2016-02-16)
      Article
      Restricted access - publisher's policy
      In this work we develop a new tanning process (that we call wet-bright) that produces leather free of chromium, aldehydes, aldehyde precursors and organic solvents. Due to the mineral character of the new system, the leather ...
    • Development of micro/nanocomposites with antibacterial effect for leather and textile 

      Bacardit Dalmases, Anna; Casas, Concepció; Bou Serra, Jordi; Ollé Otero, Lluís (2016-06-15)
      Article
      Restricted access - publisher's policy
      The aim of this work was to develop new systems of micro/nanocomposites to confer new functions to materials used for seats of public vehicles and public spaces. Specifically, this study focuses on antibacterial effect for ...
    • Dyestuffs and formaldehyde content in split leather treated with formaldehyde resins 

      Marsal Monge, Agustín; Cuadros Domènech, Rosa Maria; Cuadros Domènech, Sara; Font Vallès, Joaquim; Manich, Albert (2018-05-15)
      Article
      Open Access
      Formaldehyde resins are present in textile, leather and wood industries. Due to the harmful character of formaldehyde, different alternatives have been found to exclude or reduce its content on processed goods. However, ...
    • Effect of cleaning products on upholstery leather finishes 

      Lara López, Mercedes (Universitat Politècnica de Catalunya, 2003-06)
      Master thesis (pre-Bologna period)
      Open Access
      The work reported in this document discusses the cleaning products used to clean upholstery leather finishes. The products examined range from leather cleaners, non-typical leather cleaners such as washing up liquids, ...
    • Effect of Temperature, Relative Humidity and UV Radiation on Wet-Bright Leather Ageing 

      Bacardit Dalmases, Anna; Mir, Teresa; Font Vallès, Joaquim; Cuadros Domènech, Rosa Maria; Ollé Otero, Lluís (2017-10-04)
      Article
      Restricted access - publisher's policy
    • El tepehuaje, una nueva curtición sostenible polifenólica para la industria del cuero 

      Bacardit Dalmases, Anna; Núñez, Ericka; Combalia Cendra, Felip; Ollé Otero, Lluís (2016)
      Conference report
      Restricted access - publisher's policy
      El objetivo del presente trabajo es recuperar un curtido fenólico natural utilizando la corteza del Tepehuaje. En este estudio se considera el uso de Tepehuaje (Lysiloma acapulcensis) como fuente natural de agentes curtientes ...
    • Environmental assessment of dehydration processes for bovine leather 

      Baquero Armans, Grau; Sorolla, Silvia; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2017-02-15)
      Article
      Restricted access - publisher's policy
      The purpose of this work is to compare the environmental impact of two systems for processing bovine leather: (i) a new continuous system that consists in dehydration and tanning and post-tanning by immersion versus (ii) ...
    • Estudio del análisis cualitativo y cuantitativo del extracto obtenido a partir de semilla de uva por HPLC 

      Sorolla, Sílvia; Flores Reyes, Antònia; Font Vallès, Joaquim; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2016)
      Conference report
      Restricted access - publisher's policy
      Este trabajo tiene como principal objetivo desarrollar un análisis cualitativo y cuantitativo de los extractos tánicos como alternativa al método de análisis oficial ISO 14088 – IUC 32, de forma que se obtenga una correlación ...
    • Estudio del envejecimiento de la piel debido a la exposición directa a la intemperie 

      Bacardit Dalmases, Anna; Cobos, Mireia; Font Vallès, Joaquim; Ollé Otero, Lluís (2010-05-07)
      Conference report
      Open Access
      Un cuero para tapicería se considera un producto de alta tecnología que se puede utilizar en diversos sectores: mobiliario, automoción, aviación y naval. Sin embargo, para cada uno de estos sectores se exgen diferentes ...
    • Estudio experimental con residuos de cuero obtenidos de la industria marroquinera para el desarrollo de materiales compuestos reciclados y nuevos productos 

      Pina Mariscal, Ester (Universitat Politècnica de Catalunya, 2020-06)
      Bachelor thesis
      Open Access
      Amb aquest projecte es pretén aconseguir l'objectiu principal de reciclar aquells retalls de cuir de la indústria marroquinera, és a dir, reinventar aquests desaprofitaments que es destinen principalment a l'abocador per ...
    • Evaluation of a new sustainable continuous system for processing bovine leather 

      Bacardit Dalmases, Anna; Baquero Armans, Grau; Sorolla Casellas, Sílvia; Ollé Otero, Lluís (2015-08-15)
      Article
      Open Access
      The aim of the present work is to evaluate a new sustainable continuous system for processing bovine leather. By means of a prototype described in the international patent WO, 2010/070571 (A2) of the technological centre ...
    • Formaldehyde scavengers for cleaner production: A case study focused on the leather industry 

      Marsal Monge, Agustín; Cuadros Domènech, Sara; Ollé Otero, Lluís; Bacardit Dalmases, Anna; Manich, Albert; Font Vallès, Joaquim (2018-03-12)
      Article
      Open Access
      Due to its carcinogenic character, the presence of formaldehyde in leather continues to be a subject of great concern. By using formaldehyde scavengers, it is possible to reduce the formaldehyde content in leather. In this ...
    • Hide unhairing: achieving lower pollution loads, decreased wastewater toxicity and solid waste reduction 

      Morera Prat, Josep Maria; Bartolí Soler, Esther; Gavilanes, Rosa M. (2016-01-20)
      Article
      Open Access
      This study aims to diminish the pollution being discharged into wastewaters through changes in the unhairing process. To this aim, we are replacing a reductive hair degrading process with a process which combines a ...
    • Hidrofugació de l'acabat del cuir 

      Bartrolí Solé, Judit (Universitat Politècnica de Catalunya, 2001-09)
      Master thesis (pre-Bologna period)
      Open Access
      La importància dels cuirs hidrofugats ha augmentat considerablement els darrers anys. Això es deu a l’auge d’alguns esports, com ara el golf, el muntanyisme i els esports d’aventura en general, que utilitzen calçat i ...
    • Inter-laboratory study on formaldehyde determination by HPLC 

      Marsal Monge, Agustín; Font Vallès, Joaquim; Viera, Susanna; Cuadros, Sara; Rius Carrasco, Antoni; Reyes Reyes, Maria; Verdú, Emilio; Jorba, Montse; Juárez, Miguel-Angel (2008)
      Article
      Restricted access - publisher's policy
      The colorimetric determination of formaldehyde in a water extract of a leather sample is a procedure that has been criticized because of possible interferences of other aldehydes and coloured substances that could interfere ...
    • Libro de calidad para la producción de piel y cuero libre de Cromo(VI) 

      Font Vallès, Joaquim; Marsal Monge, Agustín; Aparicio, Enrique; Sánchez, Daniel; Ribera, Antoni (2006)
      Conference report
      Open Access
    • Low carbon products to design innovative leather processes. Part III: optimization of an eco-friendly formulation using tara 

      Bacardit Dalmases, Anna; Díaz Muñoz, Jorge; Casas, Concepció; Ollé Otero, Lluís (2015-09-01)
      Article
      Restricted access - publisher's policy
      The aim of this work was to design a new pretanning formulation by using the fruit of the Tara tree (Caesalpinia Spinosa) as the sole source of vegetable tannin. The innovative aspect of this work embodies a new-tailored ...