Recent advances in coatings characterization by photoacoustic FT-IR spectroscopy

An investigation of the effect of pigment on the degradation of a naturally weathered polyester coating

“…Scanning electron microscopy (SEM) and atomic force microscopy (AFM) are widely used to analyze surface morphologies, 10,11 while X-ray photo-electron spectroscopy (XPS) 12,13 and time-of-flight secondary iron mass spectrometry (ToF-SIMS) 14 have been used to investigate the surface chemistry of coatings, before and after exposure to the environment. Photo-acoustic (PA) Fourier transform infrared spectroscopy (FTIR) with step-scan capacity, 15,16 on the other hand, provides excellent bulk chemistry analysis with a sampling depth ranging from 6 to 20 lm. Utilizing these and other techniques, much research has been carried out with the aim of developing more fully an understanding of organic coating degradation mechanisms, when such coatings are exposed to different environmental conditions.…”

Analise e desenvolvimento do processo de obtenção de fibras de carbono a partir da estabilização oxidativa das fibras de poliacrilonitrila

“…Os espectros de FTIR obtidos foram interpretados com base na posição, forma e intensidade das principais absorções observadas, com o auxílio de tabelas de absorção de grupos funcionais e das coletâneas de espectros disponíveis, conforme literatura [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63].…”