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Polyaniline/Cellulose acetate composite and its ammonium ion sensing applications

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dc.contributor.advisor Gouma, Perena en_US
dc.contributor.author Li, Lei en_US
dc.contributor.other Department of Materials Science and Engineering. en_US
dc.date.accessioned 2017-09-20T16:50:01Z
dc.date.available 2017-09-20T16:50:01Z
dc.date.issued 2014-12-01 en_US
dc.identifier.uri http://hdl.handle.net/11401/76320 en_US
dc.description 55 pg. en_US
dc.description.abstract Conducting polymers have been investigated for years, since their discovery in 1977. Among them, polyaniline exhibits high electrical conductivity, leading to versatile applications, such as sensors, actuators, and catalysts. In this thesis, emeraldine salt polyaniline (ES-PANI) and cellulose acetate (CA) have been employed to produce composite fiber and films by three different methods: electrospinning, drop coating, and spin coating. The morphology and size of produced composites were studied by SEM. The results showed that the diameter of electrospun composite fiber decreases to nanosize, generating a nanofiber matrix that immobilize polyaniline particles. Sensing experiments were carried out at room temperature. Three types of sensors, each made by a different method, were tested for their respective responses to ammonia hydroxide. Their sensitivity and stability in ammonium hydroxide environment has been assessed. Ammonia hydroxide at different concentrations of 2.5 ppm, 10 ppm, 25 ppm and 50 ppm, were used as the analyte. As a result, the electrospun sensor exhibited far greater sensitivity and stability than the sensors made by drop coating and spin coating. With increasing concentration, the sensitivity rises, demonstrating this to be a good sensor in the application of ammonium ion detection. en_US
dc.description.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US
dc.format Monograph en_US
dc.format.medium Electronic Resource en_US
dc.language.iso en_US en_US
dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US
dc.subject.lcsh Materials Science en_US
dc.title Polyaniline/Cellulose acetate composite and its ammonium ion sensing applications en_US
dc.type Thesis en_US
dc.mimetype Application/PDF en_US
dc.contributor.committeemember Stanacevic, Milutin en_US
dc.contributor.committeemember Halada, Gary. en_US

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