TITLE

Study of estane polyester/polyurethane block copolymer by use of 2D-IR and DMA-FTIR: Understanding of polymer rheology from molecular dynamics

AUTHOR(S)
Wang, Haochuan; Palmer, Richard A.; Schoonover, Jon R.; Graff, Darla K.
PUB. DATE
March 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 503 Issue 1, p31
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, we demonstrate the use of the combination of dynamic mechanical analysis (DMA) and Fourier transform Infrared (FTIR) in simultaneous mechanical and dynamic IR spectral measurement. The DMA is performed on polymer films in the tensile geometry with IR measurement in the transmission mode. By careful analysis of the IR data, dynamic molecular motion in response to the deformation can be visualized and used to explain the viscoelastic behavior of the polymer sample obtained from the analysis of the stress and strain responses. The DMA-FTIR technique is demonstrated in both the oscillatory small deformation mode of sinusoidal modulation and the linear large deformation mode of creep/recovery studies of an industrially important elastomer, Estane. Conventional 2D-correlation analysis is used to analyze the in-phase and quadrature data obtained from the conventional experiment; while generalized 2D-correlation is demonstrated by analyzing the multiple spectra obtained at different times during the creep/recovery process. © 2000 American Institute of Physics.
ACCESSION #
5984963

 

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