Perspective of Use of Sugar Beet Production Waste - Molasses in Technology of Rubber Isolation From Latex

Abstract

At present, much attention is paid to improving the production of synthetic rubbers. The introduction of new technologies to increase the productivity of the process, more fully and rationally use valuable hydrocarbon raw materials, reduce environmental pollution and improve the quality of the products is an important and urgent task. Equally important in this case is the selection of new coagulating agents used in the technology of rubber release from latex. The main requirements for coagulating agents used in the technology of rubber release from latex are: availability, low cost, non-toxicity, ease of cleaning of sewage coming to treatment facilities from them. The possibility of application of the beet-sugar production waste - molasses for beet-lean depletion - in the technology of producing butadiene-styrene rubber SKS-30 ARC has been studied. A feature of the behavior of molasses, as a coagulating agent, is shown when isolating rubber from latex. It has been established that the consumption of molasses in the isolation of butadiene-styrene rubber from latex is closely related to the consumption of acidifying agent - sulfuric acid. The higher the molasses input for coagulation, the higher the consumption of sulfuric acid to maintain the pH of the medium at the required level. The temperature of the process did not have a significant effect on the completeness of the release of rubber from latex. The extracted crumb of rubber was separated from the aqueous phase (sulfur), washed with warm softened water and dried. On the basis of the rubber obtained, rubber mixtures were prepared using standard components and vulcanized. Rubbers obtained on the basis of rubber SKS-30 ARC, in their indicators meet the requirements.

Investigation of the process of latex coagulation by cationic surfactants

“…This is due to the fact that in the process of separating rubbers from latex, salt coagulating agents are used, the consumption of which is tens (metal salts of the second group of the periodic system) and hundreds of kg/t of rubber (metal salts of the first group of the periodic system). Therefore, at present, an important and urgent task is aimed at developing new technologies and technical solutions that can reduce the consumption of salts or completely eliminate their use in the technology of production of emulsion rubbers [5]. Quaternary ammonium salts are promising in this regard.…”

“…Quaternary ammonium salts are promising in this regard. The review paper [5] shows the prospects of their application in the technology of rubber isolation from latex. The consumption of low-molecular and high-molecular quaternary ammonium salts is less than that of sodium chloride and other salts.…”

“…In the literature there is no information about the use of cationic surfactants (CPAV) in the technology of rubber isolation from latex [5]. CPAV are available reagents that are widely used in various industrial sectors [6,7].…”