Session T17: Focus Session: Dynamics of Polymers and Complex Fluids I
2:30 PM–5:30 PM, Wednesday, March 17, 2010
Room: B116
Sponsoring Unit:
DPOLY
Chair: Ron Larson, University of Michigan
Abstract ID: BAPS.2010.MAR.T17.11
Abstract: T17.00011 : Entanglement in miscible blends
4:54 PM–5:06 PM
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Abstract 
Author:
Hiroshi Watanabe
(ICR Kyoto University)
The entanglement length $L_{\mathrm{e}}$ of polymer chains (corresponding to the entanglement molecular weight $M_{\mathrm{e}}$) is not an intrinsic material parameter but changes with the interaction with surrounding chains. For miscible blends of \textit{cis}-polyisoprene (PI) and poly(\textit{tert}-butyl styrene) (PtBS), changes of $L_{\mathrm{e}}$ on blending was examined. It turned out that the Le averaged over the number fractions of the Kuhn segments of the components (PI and PtBS) satisfactorily describes the viscoelastic behavior of pseudo-monodisperse blends in which the terminal relaxation time is the same for PI and PtBS.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.T17.11