Experimental verification of the mechanism of mass transfer in liquid photopolymerizable compositions using fourier-transform infrared-spectroscopy
V.S. solovjev, N.L. kazanskiy, A.V. Volkov, B.O. Volodkin, A.E. Starojilov

Full text of article: Russian language.

Abstract:
We propose a technique for the experimental verification of the mechanism of mass transfer in a layer of liquid photopolymerizable composition (LPC), which is based on measuring the absorption spectrum of the LPC film in different parts of the surface using Fourier-transform infrared-spectroscopy. As a result of the spatial modulation of the degree of polymer conversion, a diffusion process is initiated in the LPC layer, leading to the mass transfer and the formation of a relief on the sample surface. The possibility of determining the spatial conversion of the polymer in the LPC layer by Fourier transform infrared spectroscopy is demonstrated.

Key words:
Liquid photopolymerizable compositions, diffractive optics, Fourier-transform infrared-spectroscopy, conversion of the polymer, mass transfer, diffusion process.

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