Understanding Improvements to Low-Temperature Rheology of Stiff Binders Modified with Epoxidized Plant–Derived Oil Materials through Analytical Chemistry

摘要

Through recent work at Iowa State University, great potential was seen from epoxidized plantoil materials, epoxidized benzyl soyate (EBS), and epoxidized methyl soyate (EMS) as fluxes/rejuvenators. This work found that improvement in low-temperature performance was greaterthan improvement in high-temperature performance for solvent de-asphalting (SDA) andresiduum oil super critical extraction (ROSE) unit bottoms when using either EBS or EMSas compared to results from modified vacuum distillation tower bottoms with EBS andEMS. Based on these results, analytical chemistry was done using Fourier transformed infraredwith attenuated total reflection and ion mobility mass spectrometry (IM-MS) equipment.Chemical analysis showed that there is indeed something in the SDA and ROSE binders thatis interacting with both EBS and EMS, making them perform aggressively. The region of interestwas identified from IM-MS to be between m/z 250 and m/z 400 for the SDA and ROSEbinders, of which there were 35 common components where 29 of them had similar abundancesin the SDA and ROSE binders.