Multiple Peak Reference Method for Polarized Fourier Transform Infrared-Attenuated Total Reflection Spectroscopy to Determine the Three-Dimensional Orientation of a Uniaxially Drawn Poly(trimethylene 2,6-naphthalate) Film

Title
Multiple Peak Reference Method for Polarized Fourier Transform Infrared-Attenuated Total Reflection Spectroscopy to Determine the Three-Dimensional Orientation of a Uniaxially Drawn Poly(trimethylene 2,6-naphthalate) Film
Authors
LEE, HAN SUP
Keywords
Fourier transform infrared spectroscopy, Attenuated total reflection, FT-IR-ATR, Three-dimensional orientation
Issue Date
2008-12
Publisher
Society for Applied Spectroscopy
Abstract
The polarized Fourier transform infrared–attenuated total reflection (FTIR-ATR) technique is a very useful infrared spectroscopic method for characterizing the three-dimensional orientation of thick samples, to which the conventional transmission FT-IR method cannot easily be applied. To quantitatively analyze polarized FT-IR-ATR spectra, the dependence of the optical contact between the sample and the ATR crystalduring the clamping and reclamping processes must be controlled. In this work, a new multiple peak reference (MPR) method is proposed and used to carry out a three-dimensional analysis of a poly(trimethylene 2,6-naphthalate) (PTN) polymer sample. The conventional single peak reference (SPR) analysis technique cannot be applied to such a sample due to the lack of an established reference peak. A new artificial reference band was generated by the MPR method using two different infrared bands, at 1602 cm1 and 917 cm1, in identical spectra with a combination constant of 0.95. The new artificial reference band was successfully used to calculate the three-dimensional orientation of various infrared bands of a uniaxially drawn PTN film, which has not previously been studied by three-dimensional orientation analyses using the polarized FT-IR-ATR method.
URI
http://dspace.inha.ac.kr/handle/10505/1535
ISSN
0003-7028
Appears in Collections:
College of Engineering(공과대학) > Applied Organic Materials Engineering (유기응용재료공학) > Journal Papers, Reports(유기응용재료공학 논문, 보고서)
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