FUNCTIONALIZED ELASTOMER NANOCOMPOSITE AND METHOD OF FORMING THE SAME

摘要

A nanocomposite comprising 0.1 to 50 wt% of an exfoliated clay and an elastomer comprising 0.01 wt% to 15 wt% of functionalized monomer units having functional groups pendant to the elastomer, E, wherein elastomer comprises C4 to C7 isoolefin derived units, styrenic derived units and substituted styrenic derived units, wherein the styrenic derived units are present from 1 to 15 wt% of the elastomer and optionally with at least one free radical initiator, wherein E is selected from the following: wherein Q is selected from O and an NR1 group, wherein R1 is selected from hydrogen, C1 to C20 alkyls, alkenyls or aryls, substituted C1 to C20 alkyls, alkenyls or aryls; R2 and R2' are the same or different and are selected from hydrogen, C1 to C20 alkyls, alkenyls or aryls, substituted C to C20 alkyls, alkenyls or aryls, hydroxyl and C1 to C20 alkoxys; and wherein R3 and R4 are the same or different and selected from -OR and -NHR , wherein R5 is defined as R1 above, wherein the nanocomposite optionally includes curing agents, a filler, and a secondary rubber.