Measurement of the viscosity of irreversible hydrocolloids.
Three techniques have been used to assess the shear rate dependence of the viscosity of mixed alginate impression materials prior to setting. Two methods used a cone-plate viscometer, and one method was a capillary extrusion technique. Data from the three sets of experiments have been critically compared. It has been shown that an unset alginate material exhibits Bingham behaviour.
Wanis
T M
TM
Department of Restorative Dentistry, University of Manchester Dental Hospital, UK.
Combe
E C
EC
Grant
A A
AA
D000464:Alginates / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry; D003760:Dental Impression Materials / Q000737:chemistry*; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D008422:Materials Testing / Q000295:instrumentation; D012212:Rheology; D012399:Rotation; D013314:Stress, Mechanical; D014783:Viscosity
D000464:Alginates; D003102:Colloids; D003760:Dental Impression Materials; D006603:Hexuronic Acids; D020723:Glucuronic Acid