Temperature-dependent infrared refractive index of polymers from a calibrated attenuated total reflection infrared measurement

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dc.contributor.authorAzam, Md S.
dc.contributor.authorRanson, Malcolm D.
dc.contributor.authorHore, Dennis K.
dc.date.accessioned2023-02-07T19:21:49Z
dc.date.available2023-02-07T19:21:49Z
dc.date.copyright2022en_US
dc.date.issued2022
dc.description.abstractWe demonstrate a straightforward method by which a commonly available reference sample such as water can be used to calibrate an attenuated total internal reflection infrared absorbance measurement in order to account for the polarization of the beam incident on the internal reflecting element, and the spread of angles about the nominal angle of incidence. This enables quantitative comparison of attenuated total reflection-derived absorbance data with spectra calculated from optical constants. We then apply this calibration to the measurement of temperature-dependent absorption spectra of a polydimethylsiloxane sample. We illustrate that the extracted optical constants scale with the temperature-dependent changes in the polymer density better than the raw absorbance values on vibrational resonance.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This project was funded by Discovery, Engage, and Alliance grants from the Natural Sciences and Engineering Research Council of Canada, in collaboration with ASAsoft Canada Inc. and FT Synthetics.en_US
dc.identifier.citationAzam, M. S., Ranson, M. D., & Hore, D. K. (2022). “Temperature-dependent infrared refractive index of polymers from a calibrated attenuated total reflection infrared measurement.” Applied Spectroscopy, 76(10), 1254-1262. https://doi.org/10.1177/00037028221094598en_US
dc.identifier.urihttps://doi.org/10.1177/00037028221094598
dc.identifier.urihttp://hdl.handle.net/1828/14746
dc.language.isoenen_US
dc.publisherApplied Spectroscopyen_US
dc.subjectAttenuated total reflection infrared spectroscopy
dc.subjectATR-IR
dc.subjectpolarization
dc.subjectsusceptibility
dc.subjectcomplex refractive index
dc.subjecttemperature-dependence
dc.subjectpolymers
dc.subject.departmentDepartment of Chemistry
dc.titleTemperature-dependent infrared refractive index of polymers from a calibrated attenuated total reflection infrared measurementen_US
dc.typeArticleen_US

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