Absence of reptation in highly confined polymers


Autoria(s): Srivastava, S; Basu, JK
Data(s)

01/06/2009

Resumo

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.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/21335/1/GetPDFServlet.pdf

Srivastava, S and Basu, JK (2009) Absence of reptation in highly confined polymers. In: Journal of Chemical physical, 130 (22). pp. 224907-1.

Publicador

American Institute of Physics

Relação

http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000130000022224907000001&idtype=cvips&prog=normal

http://eprints.iisc.ernet.in/21335/

Palavras-Chave #Physics
Tipo

Journal Article

PeerReviewed