Browsing Chemistry by Author "Pirouz, Solmaz"
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Chemical Modification of Polyisobutylene Succinimide Dispersants and Characterization of Their Associative Properties
Pirouz, Solmaz; Wang, Yulin; Chong, J. Michael; Duhamel, Jean (American Chemical Society, 2015-09-17)The secondary amines found in b-PIBSI dispersants prepared by attaching two polyisobutylene chains to a polyamine core via two succinimide moieties were reacted with ethylene carbonate (EC). The reaction generated urethane ... -
New approaches to characterize polymeric oil additives in solution based on pyrene excimer fluorescence
Pirouz, Solmaz; Duhamel, Jean (Wiley, 2017-01-01)Maleated polyolefins (MaPOs) such as maleated ethylene propylene copolymers or polyisobutylene terminated at one end with a succininic anhydride can be used as polymeric dispersants in engine oils after reaction with ... -
Quantifying the Level of Intermacromolecular Interactions in Ethylene-Propylene Copolymers by Using Pyrene Excimer Formation
Pirouz, Solmaz; Duhamel, Jean; Jiang, Sheng; Duggal, Akhilesh (American Chemical Society, 2015-07-14)A unique methodology based on fluorescence measurements is introduced to quantitatively measure the actual level of interpolymeric association between ethylene-propylene (EP) copolymers used as viscosity index improvers ... -
Quantitative Characterization of Polymeric Engine Oil Additives in Solution by Fluorescene
Pirouz, Solmaz (University of Waterloo, 2015-08-24)The solution behavior of several polymeric oil additives has been characterized by using fluorescence. First, the chemical composition of the polyisobutylene-based dispersants was determined by using the inherent fluorescence ... -
Using Pyrene Excimer Fluorescence To Probe the Interactions between Viscosity Index Improvers and Waxes Present in Automotive Oil
Pirouz, Solmaz; Duhamel, Jean (American Chemical Society, 2017-03-28)A new methodology based on pyrene excimer fluorescence (PEF) was applied to quantitatively measure the actual level of intermolecular association between ethylene propylene (EP) copolymers in toluene in the presence of ...