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dc.contributor.authorKanso, Monaen
dc.date.accessioned2019-07-26T18:48:34Z
dc.date.available2019-07-26T18:48:34Z
dc.identifier.urihttp://hdl.handle.net/1974/26437
dc.description.abstractOne of the great challenges in chemical engineering is to predict physical properties from molecular structure. Predicting transport properties presents special challenges, especially for macromolecular structures. This thesis focuses on the properties governing momentum transport in polymeric liquids, and specifically those properties conferring elasticity to such liquids. In the first part of this thesis, we examine the second order orientation tensor for the simplest molecular model relevant to a polymeric liquid in largeamplitude oscillatory shear flow (LAOS), the rigid dumbbell suspension. From the second invariant of the order parameter tensor, we calculate the scalar, the nematic order, and examine its evolution for a polymeric liquid in LAOS. We find this nematic order, our main result, to be even. We use Lissajous figures to illustrate the roles of the Weissenberg and Deborah numbers on the evolving order in LAOS. We use the low frequency limit of our main result to arrive at an expression for the nematic order in steady shear flow. This work gives a first glimpse into macromolecular order in LAOS. In the second part of this thesis, we explore general rigid bead-rod theory, which explains polymer viscoelasticity from macromolecular orientation. By means of general rigid bead-rod theory, we relate the complex viscosity of polymeric liquids to the architecture of axisymmetric macromolecules. In this work, we explore the zero-shear and complex viscosities of 24 different axisymmetric polymer configurations. When non-dimensionalized with the zero-shear viscosity, the complex viscosity depends on the dimensionless frequency and the sole dimensionless architectural parameter, the macromolecular lopsidedness. In this work, in this way, we compare and contrast the elastic and viscous components of the iii complex viscosities of macromolecular chains that are straight, branched, ringed, or star-branched. We explore the effects of branch position along a straight chain, branched-chain backbone length, branched-chain branch-functionality, branch spacing along a straight chain (including pom-poms), the number of branches along a straight chain, ringed polymer perimeter, branch-functionality in planar stars, and branch dimensionality. In addition, we study diblock copolymers by exploring the effects of linear density, macromolecular length, and bead number ratio on relaxation time.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectpolymeren
dc.subjectrheologyen
dc.subjectsmall amplitude oscillatory shear flowen
dc.subjectmacromolecular architectureen
dc.subjectcomplex viscosityen
dc.subjectgeneral. rigid bead-rod theoryen
dc.titlePolymeric Liquid Behavior in Oscillatory Shear Flowen
dc.typethesisen
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorGiacomin, Alan Jeffreyen
dc.contributor.departmentChemical Engineeringen
dc.degree.grantorQueen's University at Kingstonen


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