Study of destruction of solutions of high molecular weight polyisobutylenes in petroleum oil
Application of polyisobutylenes (PIB) in lubricants is often limited due to polymer degradation. Thermal oxidation and mechanical stability of solutions of PIB in oil with polymer concentration more than 1 % mass is still not well understood. This paper includes the results of the research of the PIB destruction with different molecular weights of domestic and foreign manufacturers. The influence of temperature, mechanical impact, molecular weights and concentration were investigated. It was found that the higher molecular weight or concentration is, the larger destruction of PIB is. Other patterns of PIB’s degradation are also presented in the article.