NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
The 60th Japan National Congress for Theoretical and Applied Mechanics
Session ID : OS07-06
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OS07
Relaxation of asymmetric star polymers in primitive chain network simulations
*Yuichi Masubuchi
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Abstract
Attempts have been made on molecular modeling of relaxation of branched polymers and rather established by the study of Milner and McLeish with the detail description of the arm retraction process. The theories based on the arm retraction are however not applicable to multi-branch polymers and asymmetric polymers due to the lack of branch point motion. Thus the branch point reptation, where the branched arm portion relaxes first and then the backbone reptates dragging the arm represented by a frictional bead, has been introduced. However, the detail of branch point motion has not been elucidated yet. In this study, we investigated the branch point motion and its effect on the viscoelastic relaxation for asymmetric star polymers by 3D multi-chain sliplink model called primitive chain network simulations.
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© 2011 The Japan Society of Mechanical Engineers
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