Use of step scan FT-IR and multivariate curve resolution to understand aging of propellant binder as a function of depth into the polymer material.

Rivera, Dion Arledge ; Alam, Mary Kathleen

Sandia National Laboratories

关键词: Aging;    Fourier Transform Spectrometers;    Binders;    Polymers;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/918316
RP-ID  :  SAND2003-4151
RP-ID  :  AC04-94AL85000
RP-ID  :  918316

美国|英语

来源: UNT Digital Library

【 摘 要 】

A sample of polymeric propellant binder was aged from 0 to 60 days at 95 C and analyzed using FT-IR step scan photoacoustic spectroscopy. This technique has the ability of to obtain spectra of the polymer as a function of depth into the polymer material. Multivariate curve resolution was applied to the spectra data obtained to extract the contributions of the aged and un-aged spectral components from the spectra. It was found that multivariate curve resolution could efficiently separate highly overlapped spectra and yielded insights into the aging process.