Now showing items 1-20 of 42

    Desarrollo de nuevas estructuras laminares de nanocelulosa con propiedades avanzadas para el packaging 

    Fernández Santos, Julia (Date of defense: 2024-10-31)

    (English) Changes in the use of raw materials and major lifestyle changes in first world societies have driven the massive use of petroleum-based materials in a wide range of applications. Plastic waste has become pervasive ...

    Development of high performance cement-based composites reinforced with nonwoven fabrics from sustainable raw materials and textile wastes 

    Gónzalez López, Laura (Date of defense: 2021-10-01)

    (English) Currently there is a growing concern about the sustainability of the construction sector due to its great contribution to climate change. Approximately one third of carbon dioxide emissions are produced by this ...

    Structural barrier effect on cotton fabrics 

    Wu, Qiuyue (Date of defense: 2022-12-14)

    (English) Cotton, being a natural hollow fiber with remarkable economic values including moisture absorption, air permeability, softness, comfort, and warmth retention, has become one of the most essential raw materials ...

    Obtaining and ennobling of cottonised hemp fibres for textile substrates 

    Mijas Vélez, Gabriela Dayana (Date of defense: 2022-10-10)

    (English) The main objective of this work has been to obtain fibres and subsequently yarns and fabrics that are suitable for textile applications, through the cottonisation of an agricultural by-product of hemp (Cannabis ...

    Ionic liquid-assisted the preparation of transparent cellulosic biocomposite films 

    Amini, Elahe (Date of defense: 2023-12-14)

    (English) Interest in new environmentally friendly cellulose-based products has tremendously increased in recent years. Cellulose-based composites come in various forms and have potential applications in construction, ...

    Development of dynamic textiles based on shape memory polyurethane (SMPU) for applications in car seat upholstery 

    González Bertran, Judit (Date of defense: 2023-10-25)

    (English) In recent years, numerous studies have been carried out on functional textiles due to their ability to adapt and interact with the environment. In particular, special focus has been placed on dynamic textiles ...

    Analysis of the influence of false twist integrated into a high speed drafting system of an air jet spinning machine 

    Günther, Karoline (Date of defense: 2023-02-24)

    (English) Air jet spinning is an emerging technology, already well established in the textile market. The commercial success increased over the last decades and intensified the research and innovation approach in the field ...

    Aportaciones al desarrollo preclínico de un medicamento oncológico infantil con excipiente o soporte textil 

    Cano Casas, Francesc (Date of defense: 2020-07-17)

    The world of technical textiles is present every day in more sectors. In the work presented, a new facet of textile materials has been shown, textiles as a drug excipient and functional matrix. It is known that electro-spinning ...

    Improvement of polyester dyeing at low temperature 

    Radei, Shahram (Date of defense: 2020-07-16)

    In this thesis the polyester dyeing at low temperatures has been assessed with two different methods: exhaustion method and thermosol method. Exhaustion dyeing process was performed with high and low molecular-weight ...

    Avaluació d'alternatives industrials per a l'obtenció de nous materials que valoritzen residus queratínics 

    Casadesús Fusté, Marta (Date of defense: 2019-11-25)

    The worldwide poultry industry generates a large amount of wastes which, accordingly to the current law, are mostly discarded. These wastes include chicken feathers, keratin structures which 109.056.179 ton were generated ...

    Estudio de la influencia de los diferentes parámetros involucrados en la microencapsulación mediante coacervación compleja 

    García Carmona, Óscar (Date of defense: 2019-07-12)

    In 1931, the first research work related to microencapsulation was published, in which a microcapsule formation technology using gelatine as a wall material was described by a process called "coacervation". The interest ...

    Desarrollo de microcápsulas rígidas de fragancia y de técnicas que permitan la cuantificación de la eficiencia de encapsulación 

    García Carmona, Carlos (Date of defense: 2019-07-12)

    From a long time, finishes have been developed with fragances; despite this fact, whatever the technology used to obtain the fragrance formulation, the final effect on the odor is very low. The smell usually disappears ...

    Millora de la protecció UV de substrats tèxtils mitjançant l'aplicació, en l'extrusió, de nano i micropartícules 

    Cot del Valle, Maria (Date of defense: 2017-11-29)

    In this thesis, we study the improvement of the UV protection of polyester textiles by introducing nano or microparticles of TiO2 in the polyester during the extrusion of the yarn. Initially, the influence of different ...

    Development of new lightweight green composites reinforced with nonwoven structures of flax fibres 

    Ventura Casellas, Heura (Date of defense: 2017-06-19)

    Composite materials offer good mechanical performance with lower weight than classical materials, what has encouraged their use in many industry applications. Moreover, the rising awareness about environmental problems has ...

    Preparación de soportes biomateriales con estructuras fibrilares obtenidas mediante electro-hilatura 

    Erencia Millán, Marisa (Date of defense: 2017-02-01)

    The fabrication of scaffolds materials with the ability to mimic the structural and functional properties of extracellular matrix is one of the most important points of interest into the tissue engineering field. Among the ...

    Enzymatic-assisted preparation of nanocrystalline cellulose from non-wood fibers 

    Beltramino Heffes, Facundo (Date of defense: 2016-12-21)

    In the current scenario of growing environmental concerns, the search for innovative, renewable, non-polluting materials has never been as intensive as it is today. Cellulose, being the most abundant polymer on earth, ...

    Enzymatic and chemical treatments to obtain pulps with high-cellulose content 

    Quintana Vilajuana, Elisabet (Date of defense: 2016-09-19)

    La celulosa es el polímero más abundante en la Tierra y en los últimos años ha ganado un amplio interés como fuente de nuevos productos con requisitos de procesamiento y de calidad diferentes a los procesos convencionales ...

    Surface functionalization of cellulosic substrates by using chemical and biotechnological methods 

    Cusola i Aumedes, Oriol (Date of defense: 2013-12-20)

    This thesis deals with the surface modification of cellulosic substrates by use of chemo-enzymatic methods. Functionalizing cellulose is intended to adjust its properties for various purposes, but particularly for obtaining ...

    Tratamiento y reutilización de efluentes de la industria textil mediante técnicas de membranas 

    Buscio Olivera, Valentina (Date of defense: 2015-12-12)

    Textile industry consumes large amount of water in their processes, mainly in dyeing and finishing operations. In general, during the dyeing process, up to 30% of dyes used can be discharged into wastewater. For this reason, ...

    Eliminación del color de las aguas residuales procedentes de la tintura con colorantes reactivos 

    Vilaseca i Vallvé, M. Mercè (Date of defense: 2015-05-10)

    This thesis is based on the study of colour elimination of textile effluents which contain reactive dyes. Reactive dyes are widely used in the dyeing of cotton and other cellulosic fibre. However they exhibit a low degree ...