BUILDING THE PHENOMENOLOGICAL FOUNDATION FOR POLYMER NONLINEAR RHEOLOGY AND PROCESSING
1. Introduction Polymer rheology has a long history. In its eighty year history, out of necessity and convenience, one has been carried measurements based on the predication that homogeneous shear prevails in both linear and nonlinear response regime. Unfortunately, in such standard geometry as cone-plate, we actually do not and cannot dictate how each layer of the sample would deform. We could only prescribe how each of the two shearing surfaces moves relative to one another. If a uniform rate of shear cannot be established, we would not be able to straightforwardly valuate constitutive properties based on rheometry. Although rheology is a study of deformation and flow of materials, more emphasis has historically been placed on understanding steadyshear flow than the initial deformation of entangled polymers. Moreover, traditionally, the phenomenology of polymer rheology is built on mechanical measurements (i.e., rheometric studies), assuming the states of deformation and flow are known a priori.
S.Q.Wane P.Boukany S.Ravindranath Y.Y.Wang X.Li X.Y.Zhu G.Zartman S.W.Cheng
Department of Polymer Science, University of Akron
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
43-44
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）