Suspensions Particles and Polymers Polymer Rheology trees and plants-gum-arabic,cellulose ·seeds Guar gum,locust bean gum seaweed carageenan,alginates,agar .fruit ·pectins grains -starches microbial xanthan gum ◆animal -gelatin,keratin and petroleum -acrylic acid,polyacrylamide,and many plastics. Kinds of Polymer Chains Long Rods Coils/Strings Branching Polymer melts and solutions Viscosity of Polymer melts -molecular weight distribution -degree of branching shear rate -Temperature and Pressure Polymer solutions -all of the above -concentration -solvent interactions 11 Suspensions Particles and Polymers Polymer Rheology Kinds of Polymer Chains Long Rods Coils/Strings Branching Polymer melts and solutions Viscosity of Polymer melts -molecular weight distribution - degree of branching - shear rate - Temperature and Pressure Polymer solutions - all of the above -concentration -solvent interactions