Srivastava, S. ; Basu, J. K. (2009) Absence of reptation in highly confined polymers The Journal of Chemical Physics, 130 (22). p. 224907. ISSN 0021-9606
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Official URL: http://doi.org/10.1063/1.3152569
Related URL: http://dx.doi.org/10.1063/1.3152569
Abstract
We present results of mechanical stress relaxation measurements on polymers confined at the air-water interface in the form of a monolayer. Systematic measurements allow, to our knowledge, for the first time, observation of the scaling of the stress relaxation time of the highly confined polymers as a function of both surface concentration and molecular weight. The observed scaling is found to be very close to that expected for motion of unentangled polymer solutions with hydrodynamic interactions. Our experimental observations thus clearly rule out the possibility of entanglement and hence reptation as a mode of relaxation in such highly confined polymeric systems.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
ID Code: | 116143 |
Deposited On: | 22 Mar 2021 07:28 |
Last Modified: | 22 Mar 2021 07:28 |
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