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Biobased Poly-phosphonate Additives from Methyl Linoleates‡
Published in Tribology Transactions, 2019
Girma Biresaw, Grigor B. Bantchev, Rogers E. Harry-O’Kuru
Increasing the temperature will decompose the radical initiator faster, yielding a higher radical concentration, which will accelerate the reaction. However, this will lead to depletion of the initiator, which requires addition of more initiator, and the formation of more side products. Different initiators were investigated and were found to initiate reactions at different temperatures but provided similar rates of radical initiation (Bantchev, et al. (23)). For all initiators, the reaction was faster at higher temperatures, possibly because the H-P bond becomes more labile. A sluggish reaction was observed at ∼140 °C without added initiator, which indicates that the reactants can form radicals and initiate the reaction by themselves, but are too slow for such reaction.