Effect of time and temperature exposition in the crystallinity degree of sulfonated poly-{styrene acrylic acid} (PSAA-S)

Polymers with special properties have been increasingly applied in the development of technological devices. For example, polymeric materials with special electric properties, such as sulfonated poly-{styrene-acrylic acid} (PSAA-S), are of great interest for showing different conductivities dependin...

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Bibliographic Details
Published in:Electrochimica acta 2011-12, Vol.57, p.172-175
Main Authors: Duarte, G.W., Silveira, F.Z., Becker, E.B., Silva, L., Naspolini, A.M., Consenso, E.C., Paula, M.M.S., Fiori, M.A.
Format: Article
Language:English
Subjects:
Acrylic acid
Analytical chemistry
Chemistry
Conductive polymer
Crystallinity
Devices
Electrochemistry
Exact sciences and technology
Exposure
Factorials
General and physical chemistry
General, instrumentation
Humidity and pH sensor
Properties of electrolytes: conductivity
Resistivity
Samples
Statistical analysis
Sulfonated polystyrene
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Summary:Polymers with special properties have been increasingly applied in the development of technological devices. For example, polymeric materials with special electric properties, such as sulfonated poly-{styrene-acrylic acid} (PSAA-S), are of great interest for showing different conductivities depending on the environment where they are applied. The special properties of PSAA are obtained only after sulfonation step in acidic media. The present work aimed to evaluate the effect of time and temperature exposition in the crystallinity degree of PSAA-S, through a statistical experimental factorial planning. The samples of PSAA-S were submitted to FT-IR and XRD tests. The results showed that the temperature and the time of exposition are significant factors in the crystallinity degree of PSAA-S, considering that the crystal lattices created during the polymerization are damaged by the action of time and temperature at which the polymer is exposed.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2011.04.042