i'm working with fatty acid (palm oil based) based emulsifiers for ABS polymerization. i observed that above at 80-100 deg C..the fatty acids oxidizes..changes color from colorless intor slightly yellow liquid and pungent odor is released. besides that, the emulsifier color also changes into slightly yellowish.
why does the fatty acid oxidises ? is it because of the presence of oleic acid? the ABS color polymerized with the oxidized fatty acid is affected too. The yellowness index of the ABS increases too. why is that so ?
can low molecular weight fatty acids effect the impact strength of ABS ? i observed that the low MW fatty acids exhibit low conversion%. can this be the cause of the low impact strength of ABS ?
thank you..i hope someone out there can provide me with some information.