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dc.contributor.authorTowler, Brett William
dc.contributor.authorRupp, Cory J.
dc.contributor.authorCunningham, Alfred B.
dc.contributor.authorStoodley, Paul
dc.date.accessioned2017-08-08T21:37:39Z
dc.date.available2017-08-08T21:37:39Z
dc.date.issued2003-10
dc.identifier.citationTowler, B.W., C.J. Rupp, A.B. Cunningham and P. Stoodley, "Viscoelastic properties of a mixed culture biofilm from rheometer creep analysis," Biofouling, 19(5):279-285 (2003).en_US
dc.identifier.issn0892-7014
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/13463
dc.description.abstractThe mechanical properties of mixed culture biofilms were determined by creep analysis using an AR1000 rotating disk rheometer. The biofilms were grown directly on the rheometer disks which were rotated in a chemostat for 12 d. The resulting biofilms were heterogeneous and ranged from 35 microns to 50 microns in thickness. The creep curves were all viscoelastic in nature. The close agreement between stress and strain ratio of a sample tested at 0.1 and 0.5 Pa suggested that the biofilms were tested in the linear viscoelastic range and supported the use of linear viscoelastic theory in the development of a constitutive law. The experimental data was fit to a 4-element Burger spring and dashpot model. The shear modulus (G) ranged from 0.2 to 24 Pa and the viscous coefficient (eta) from 10 to 3000 Pa. These values were in the same range as those previously estimated from fluid shear deformation of biofilms in flow cells. A viscoelastic biofilm model will help to predict shear related biofilm phenomena such as elevated pressure drop, detachment, and the flow of biofilms over solid surfaces.en_US
dc.titleViscoelastic properties of a mixed culture biofilm from rheometer creep analysisen_US
dc.typeArticleen_US
mus.citation.extentfirstpage279en_US
mus.citation.extentlastpage285en_US
mus.citation.issue5en_US
mus.citation.journaltitleBiofoulingen_US
mus.citation.volume19en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1080/0892701031000152470en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.data.thumbpage4en_US


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