Kinetics of the Adsorption of a PDMS-g-PEO Copolymer at the PDMS/PEO Interface

Kinetics of the Adsorption of a PDMS-g-PEO Copolymer at the PDMS/PEO Interface

The kinetics of interface formation between poly(dimethylsiloxane) (PDMS) and poly(ethylene oxide) (PEO) with and without low molecular weight copolymer PDMS-g-PEO has been studied by interfacial tensiometry. For the PDMS/PEO interface, interfacial tension is constant with time and the interface is...

Full description

Saved in:
Bibliographic Details
Published in:Langmuir Vol. 15; no. 23; pp. 8212 - 8219
Main Authors: Schreyeck, Gabriel, Marie, Pascal
Format: Journal Article
Language:English
Published: American Chemical Society 09-11-1999
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The kinetics of interface formation between poly(dimethylsiloxane) (PDMS) and poly(ethylene oxide) (PEO) with and without low molecular weight copolymer PDMS-g-PEO has been studied by interfacial tensiometry. For the PDMS/PEO interface, interfacial tension is constant with time and the interface is immediately formed. For the PDMS/PEO interface with copolymer, interfacial tension decreases slowly or goes to a minimum (unexpected) with time before reaching its equilibrium value, depending on copolymer concentration in the PEO. This kinetics of interface formation with an overshoot has been explained with two processes: adsorption of the copolymer at the interface by transfer over an energy barrier and relaxation of the interfacial layer.
Bibliography:istex:0F621E04D38A9AA84175E3FE7063504E8B3674C3
ark:/67375/TPS-LTSCMR1P-M
ISSN:0743-7463
1520-5827
DOI:10.1021/la990229w