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dc.contributor.advisorCorcuera Maeso, María Ángeles
dc.contributor.advisorEceiza Mendiguren, María Aranzazu
dc.contributor.authorSantamaría Echart, Arantzazu
dc.date.accessioned2017-06-26T11:18:38Z
dc.date.available2017-06-26T11:18:38Z
dc.date.issued2017-02-23
dc.date.submitted2017-02-23
dc.identifier.urihttp://hdl.handle.net/10810/21910
dc.description327 p.es_ES
dc.description.abstractIn this work, environmentally friendly anionic waterborne polyurethane and polyurethane-urea dispersions were synthesized in order to prepare films by casting. The effect of molar composition and synthesis route were analyzed on the waterborne polyurethane and polyurethane-urea dispersions, as well as the properties of films. Furthermore, these dispersions were used for the preparation of new eco-friendly materials. In this way, cellulose nanocrystals were isolated for the preparation of nanocomposite films. The effect of matrix nature, cellulose nanocrystals content and their incorporation route were analyzed in the final properties of the nanocomposites. Moreover, electrospun nanocomposite mats were prepared from waterborne polyurethane-cellulose nanocrystals dispersions using poly(ethylene oxide) as polymer template. The effect of varying the nanoreinforcement content and incorporation route was analyzed in the morphology and surface behavior of mats. In a second section, extracts containing bioactive compounds from two plants (Salvia officinalis L. and Melissa officinalis L.), were obtained for being incorporated to polyurethane-urea dispersions in order to confer antimicrobial properties. Three different incorporation routes were designed for the incorporation of different extract contents. Polyurethane-urea dispersions containing plant extracts were characterized and films were prepared. The final properties of films were analyzed and antimicrobial tests were carried out against Gram positive Staphylococcus aureus and Gram negative Escherichia coli and Pseudomonas aeruginosa bacteria.es_ES
dc.language.isoenges_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectcolloid chemistryes_ES
dc.subjectpolymer analysises_ES
dc.subjectpolyurethaneses_ES
dc.subjectpolímeros compuestoses_ES
dc.subjectmacromoléculases_ES
dc.subjectpoliuretanoses_ES
dc.titleSynthesis and characterization of waterborne polyurethane and polyurethane-urea towards eco-friendly materials by cellulose nanocrystals and plant extracts incorporationes_ES
dc.typeinfo:eu-repo/semantics/doctoralThesises_ES
dc.rights.holder(c)2017 ARANTZAZU SANTAMARIA ECHART
dc.identifier.studentID546913es_ES
dc.identifier.projectID14723es_ES
dc.departamentoesIngeniería química y del medio ambientees_ES
dc.departamentoeuIngeniaritza kimikoa eta ingurumenaren ingeniaritzaes_ES


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