Peculiarities of technology for obtaining polyacrylamide functional hydrogels based on luminescent fillers

Abstract

The article considers the technology for obtaining a composite hydrogel material in the form of an aqueous suspension. The issue of hydrogel material grinding in an aqueous medium is considered, with the production of an aqueous suspension of particles with the required particle size distribution. Polyacrylamide polymer was chosen as a composite hydrogel material, and anti-Stokes phosphors of various brands were used as a filler. The paper presents a method for obtaining a composite hydrogel material. For its implementation, a complex installation has been developed, containing a reactor with a set of agitators, high-speed gear cutters, as well as a special dispersion unit, including a pump and a two-zone disperser. Data on the study of the influence of technological and regime parameters of the equipment used on the granulometric composition of the obtained hydrogel material are presented. The effects on the quality of the obtained hydrogels of the frequency of rotation of the disperser, the dispersion time and the ratio of the hydrogel to water were revealed. Suspensions with a narrow granulometric composition from 1300 to 200 µm were obtained. Micrographs of a composite material based on a polyacrylamide hydrogel and an inorganic phosphor are presented. A description of the technology for obtaining a suspension of hydrogel material in a single technological cycle is given.