Application of brewing waste in the technology of synthetic polymers

Abstract

At present, much attention is paid to the production of synthetic polymers. The production of rubbers by emulsion polymerization is of particular interest. Sodium chloride, currently used as a coagulating agent, has a high consumption of up to 200 kg / t of rubber and increases environmental pollution. In the presented work, for the first time, the possibility of using dispersed systems of brewing waste (yeast) to reduce the aggregate stability is considered. The use of waste material in the technology of extracting rubber from latex makes it possible to exclude sodium chloride from the technological cycle. The use of a system based on a protein coagulant makes it possible to achieve complete separation of rubber from latex at a waste consumption of 10-15 kg / t of rubber. The best results were achieved when yeast pre-acidified with sulfuric acid was used in this process, which leads to charging the nitrogen atom of the protein component. It was noted that the best temperature regime for the process of rubber extraction from latex is 1-20 ° C. An increase in temperature to 60 ° C leads to an increase in the consumption of coagulant by 5 kg / t of rubber. According to all the main physical and mechanical indicators, rubbers isolated by this technology meet the requirements.