The relaxation kinetics of laser-induced scattering and absorption was investigated in a liquid epoxy resin suspension of carbon microparticles. The scattered light intensity and the optical transmittance at temperatures below +10°C demonstrate anomalous kinetics with a distinct build-up stage. The observed behavior is interpreted as a manifestation of processes of mechanical stress relaxation in epoxy layers around microbubbles. The microbubbles induced by laser irradiation of the suspension can be a tool for the investigation of mechanical stress relaxation in polymers.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 78, No. 3, pp. 397–403, May–June, 2011.
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Zelensky, S.E., Kopyshinsky, A.V., Garashchenko, V.V. et al. Kinetics of light scattering in an epoxy resin suspension of carbon microparticles. J Appl Spectrosc 78, 371–376 (2011). https://doi.org/10.1007/s10812-011-9478-x
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DOI: https://doi.org/10.1007/s10812-011-9478-x