Volume 41, Issue 21 2000096
Communication

Effect of Molecular Architecture on Conformational Relaxation of Polymer Chains at Interfaces

Hung K. Nguyen

Hung K. Nguyen

Department of Applied Chemistry, Kyushu University, Fukuoka, 819-0395 Japan

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Daisuke Kawaguchi

Corresponding Author

Daisuke Kawaguchi

Department of Applied Chemistry, Kyushu University, Fukuoka, 819-0395 Japan

Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka, 819-0395 Japan

E-mail: [email protected]; [email protected]

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Keiji Tanaka

Corresponding Author

Keiji Tanaka

Department of Applied Chemistry, Kyushu University, Fukuoka, 819-0395 Japan

Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka, 819-0395 Japan

International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, 819-0395 Japan

E-mail: [email protected]; [email protected]

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First published: 27 May 2020
Citations: 6

Abstract

Dynamics of polymer chains near an interface with an inorganic material are believed to strongly affect the physical properties of polymers in nanocomposites and thin films. An effect of molecular architecture on the conformational relaxation behavior of polystyrene (PS) chains at the quartz interface using sum-frequency generation spectroscopy is reported here. The relaxation dynamics of chains in direct contact with the quartz interface is slower with a star-shaped architecture than that with its linear counterpart. The extent of the delay becomes more pronounced with increasing number of arms. This can be explained in terms of the superior interfacial activity to the quartz surface for the star-shaped PS.

Conflict of Interest

The authors declare no conflict of interest.

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