title: Rheology of attractive emulsions.
abstract: We show how attractive interactions dramatically influence emulsion rheology. Unlike the repulsive case, attractive emulsions below random close packing, φ(RCP), can form soft gel-like elastic solids. However, above φ(RCP), attractive and repulsive emulsions have similar elasticities. Such compressed attractive emulsions undergo an additional shear-driven relaxation process during yielding. Our results suggest that attractive emulsions begin to yield at weak points through the breakage of bonds, and, above φ(RCP), also undergo droplet configurational rearrangements.
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: Sujit S
authors.initials: SS
authors.lastname: Datta
authors.forename: Dustin D
authors.initials: DD
authors.lastname: Gerrard
authors.forename: Travers S
authors.initials: TS
authors.lastname: Rhodes
authors.forename: Thomas G
authors.initials: TG
authors.lastname: Mason
authors.forename: David A
authors.initials: DA
authors.lastname: Weitz