Język Polski
English
Published
: 2022-09-19
FT-IR ATR spectra and nanohardness measurements as used to follow the progress in photocuring of polyester resins
Abstract
Photocuring of a polyester resin layer 1.0-3.5 |am thick was followed in terms of FT-IR ATR spectroscopy and nanoindentation measurements. The hardness of the coating was reaffirmed to be related to exposure time (Fig. 3). FT-IR spectra showed the photocuring of the resin to follow the mechanism involving copolymerization of an oligoester with styrene (Fig. 4). FT-IR data were found to be well correlated (R2 > 0.95) with nanoindentation data (Fig. 5). The curing degree disclosed a surface gradient (Fig. 3a), impossible to detect by conventional hardness measurements. This gradient continued to be maintained in the course of the curing reaction, a fact of possible consequence for polymer coating durability. By being focused on surface layer features, the nanoindentation technique provides valuable data that so far were underestimated by polymer technology.
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Bieliński, D., Głąb, P., & Ślusarski, L. (2022). FT-IR ATR spectra and nanohardness measurements as used to follow the progress in photocuring of polyester resins. Polimery, 46(7-8), 494-500. Retrieved from https://ichp.vot.pl/index.php/p/article/view/2099
