In-situ Variable Temperature Ellipsometry of Nafion Thin Films

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dc.contributor.advisorKaran, Kunal
dc.contributor.authorZhang, Chi
dc.date.accessioned2016-10-27T22:15:32Z
dc.date.available2016-10-27T22:15:32Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractABSTRACT This work presents the study of thermal behaviour in thin Nafion films. The experiments have been carried out with variable angle spectroscopic ellipsometry (VASE), atomic force microscopy (AFM), and goniometer. The results from this investigation focused on thin films between 10 and 700 nm thick on different substrates. The thermal behaviour of thin films was studied by analyzing the thermal expansion coefficients (α) and glass transition temperature (Tg). Moreover, the influence of different substrates on the thin films’ thermal behaviour was investigated. It was found that Nafion thin films did not show clear glass transition behaviour between 25 and 200°C. The α values of thin films showed clear deviation from that of Nafion membrane. Moreover, the thin films on hydrophilic substrates (Au and Pt). showed decrease in α compared to membrane, while intermediate substrates (SiO2, graphene) showed increase. There is a strong correlation between water contact angle and α values.en_US
dc.identifier.citationZhang, C. (2016). In-situ Variable Temperature Ellipsometry of Nafion Thin Films (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26559en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26559
dc.identifier.urihttp://hdl.handle.net/11023/3440
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Chemical
dc.subjectMaterials Science
dc.titleIn-situ Variable Temperature Ellipsometry of Nafion Thin Films
dc.typemaster thesis
thesis.degree.disciplineChemical and Petroleum Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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