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dc.contributorJi, Jian
dc.contributor.authorBiurrun Zuasti, Maialen
dc.date.accessioned2013-03-15T20:16:43Z
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/2099.1/17668
dc.description.abstractThe LbL Electrostatic Self Assembly could be used to produce nano or micrometric thickness multilayer films with several different functionalities and applications. It is based on the alternative dipping of a substrate in positively and negatively charged aqueous solutions giving rise, as could be concluded from the name of the technique, to the self assembly of the charged polymers present in the solutions. Among all the possible applications of this building technique, this research work is focused on the production of a Free Standing Film that could be peeled off from the substrate. Previous research works have revealed the possibility of building a Free Standing Film with asymmetric hydro-response (hydrophilic and hydrophobic surfaces in the same film) that gives rise to a humido-responsive behaviour as the film could wrap around the hydrophobic or the hydrophilic side depending on the environmental humidity. This asymmetric behaviour could make these Free Standing Films very interesting for applications as sensor or detectors. However, its low mechanical strength and high brittleness limit the future uses of this kind of films. In the present work, a higher strength Free Standing Film is tried to develop while maintaining its asymmetric behaviour. Graphene is a novel nanomaterial with outstanding chemical, electrical and mechanical properties that could be used for improving the mechanical strength of these films. Even though it presents outstanding properties, its hydrophobicity makes difficult the incorporation of graphene to the Electrostatic Self Assembly films, reason for which it must be somehow modified. In this research work Free Standing Multilayer Films are satisfactorily built using graphene while maintaining their asymmetric hydro-behaviour that give rise to humido-responsive wrapping as a response to the environmental humidity.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.publisherZhejiang University
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject.lcshGraphene
dc.subject.lcshNanostructure materials
dc.subject.lcshThin films
dc.subject.lcshPolymers in medicine
dc.subject.lcshBiomedical engineering
dc.titleConstruction of free-standing films using graphene for biomedical applications
dc.typeMaster thesis
dc.subject.lemacGrafé
dc.subject.lemacMaterials nanoestructurals
dc.subject.lemacPel·lícules fines
dc.subject.lemacPolimers en medicina
dc.subject.lemacEnginyeria biomèdica
dc.rights.accessRestricted access - author's decision
dc.date.lift10000-01-01
dc.audience.educationlevelMàster
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.provenanceAquest document conté originàriament altre material i/o programari no inclòs en aquest lloc web
dc.description.mobilityOutgoing


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