Comparative study of coating thickness determination in packaging composite materials using photothermal radiometry, photoacoustic and photopyroelectric methods

Authors
Chirtoc, M Gibkes, J Walther, HG Christ, A Antoniow, JS Bicanic, D Bozoki, Z Szabo, G Bein, B Pelzl, J Kleebauer, M Bader, H Marinelli, M
Citation
M. Chirtoc et al., Comparative study of coating thickness determination in packaging composite materials using photothermal radiometry, photoacoustic and photopyroelectric methods, ANAL SCI, 17, 2001, pp. S185-S188
Citations number
11
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL SCIENCES
ISSN journal
09106340 → ACNP
Volume
17
Year of publication
2001
Pages
S185 - S188
Database
ISI
SICI code
0910-6340(2001)17:<S185:CSOCTD>2.0.ZU;2-J
Abstract
Thickness measurements of transparent coatings on polymer, paper or metalli c substrates used as packaging materials are reported. It is shown that thi ckness evaluations in the range between 1 and 75 mum are feasible by contac t photothermal techniques (photoacoustics (PA), photopyroelectric (PPE) met hod), as well as by non-contact ones (photothermal radiometry (PTR)). The i mportance of signal normalization using appropriate reference samples and t hat of correction by background substraction is particularly stressed.