A COMPARISON OF SPECULAR REFLECTION AND PA-FTIR TECHNIQUES IN THE ANALYSIS OF ANNEALED INJECTION-MOLDED POLYAMIDE 6,6

Citation
T. Jawhari et al., A COMPARISON OF SPECULAR REFLECTION AND PA-FTIR TECHNIQUES IN THE ANALYSIS OF ANNEALED INJECTION-MOLDED POLYAMIDE 6,6, Journal of applied polymer science, 51(3), 1994, pp. 463-471
Citations number
44
Categorie Soggetti
Polymer Sciences
ISSN journal
00218995
Volume
51
Issue
3
Year of publication
1994
Pages
463 - 471
Database
ISI
SICI code
0021-8995(1994)51:3<463:ACOSRA>2.0.ZU;2-O
Abstract
A comparative study between the specular reflectance and photoacoustic FTIR techniques is presented in this work. The potential and limitati ons of these two methods are investigated by following and analyzing s tructural variations that take place at the surface in annealed inject ion-molded polyamide 6,6. Both spectroscopic techniques appear to be q uite sensitive in detecting small structural changes that occur in pol yamide 6,6 when submitted to different annealing temperatures. However , the presence of distorted bands in the specular reflection spectra m akes the photoacoustic FTIR method more attractive for the IR vibratio nal analysis of difficult materials (e.g., composites, black-filled po lymers, paints, etc.) that cannot be easily characterized by conventio nal transmission FTIR. (C) 1994 John Wiley & Sons, Inc.