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Phase Diagrams Calculated for Sheared Ternary Polymer Blends by R. Horst; B.A. Wolf is a Materials Science article available to read on EtoBox.
What is Phase Diagrams Calculated for Sheared Ternary Polymer Blends about?
On the basis of the generalized Gibbs energy of mixing Gi (which is the sum of the Gibbs energy for zero shear and the energy the system stores in steady flow) phase diagrams were calculated as a function of shear rate + for ternary model blends. This modelling uses simple equations for the description of the stagnant systems (Flory-Huggins) and for the contributions resulting from flow. Surface and alignment effects are neglected. A new procedure, which does not require the derivatives of G+ with respect to composition, was used to that end. Choosing typical values for the binary interaction parameters and molar masses, four classes of ternary systems were studied in greater detail. Under equilibrium conditions, with two of them there only exist one-phase and two-phase regions in the temperature range of interest. At least one threephase domain occurs with the other two types of ternary mixtures. In addition to all effects observed for binary systems, the following new phenomena were calculated: (i) twofold disappearance of closed loops of immiscibility and twofold reappearance; (ii) creation and annihilation of three phase areas; and (iii) creation and annihilation of islands of
Who reads Phase Diagrams Calculated for Sheared Ternary Polymer Blends?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- R. Horst; B.A. Wolf
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0032-3861)
- Published
- 1997
- Language
- EN
- Field
- Materials Science (Physical Sciences)