ABSTRACT
Aspects of two new applications of photopolymerizable acrylic compositions, namely as a registering medium for optical data recording and a polymer sensor element for gas analysis, are discussed. The first application is based on the possibility of generation of surface plasmon resonance by gold nanoparticles formed in a 3D network matrix produced by irradiating a liquid acrylic composition containing a dissolved gold salt with a mercury lamp. It was established that the efficiency of formation of gold nanoparticles is determined by the parameters of the polymer network and by the chemical structure of the oligomer block, with the most suitable matrixes being those having a loose network and containing groups capable of participating in complexation. The obtained matrixes may serve as registering media for optical data recording because the agglomeration of gold nanoparticles is initiated by subsequent external effects (heating and/or irradiation), and the plasmon resonance band of gold nanoparticles arises in the visible spectral region (500-600 nm) at the point of external effect application. The second application deals with polymer films containing microcavities with selective absorption centers, which were obtained from oligoester acrylates. Experimental studies of absorptiondesorption of morpholine as an analyte by a molecularly imprinted polymer film (obtained with morpholine as a template) using surface acoustic waves demonstrated significantly increased sensitivity of the polymer sensor element to morpholine in comparison with other analytes. A new method to measure the response of the sensitive element based on the molecularly imprinted polymer, which takes into account the size of output signal and its relaxation time simultaneously, is proposed.
