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Home  >  Journal list  >  Polymer Journal  >  Vol.14  No.5 (1982)  >  pp.401-410

Polymer Journal
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Studies on Membrane Surfaces of A-B-A Tri-Block Copolymers Consisting of Poly(ε-N-benzyloxycarbonyl-L-lysine) as the A Component and Polybutadiene as the B Component

Kouhei Kugo1), Yoshio Hata1), Toshio Hayashi1) and Akio Nakajima1)
1) Department of Polymer Chemistry, Kyoto University

ABSTRACT:  The surface characteristics of A-B-A type tri-block copolymer membranes consisting of α-helical poly(ε-N-benzyloxycarbonyl-L-lysine) as the A component and polybutadiene as the B component were investigated by X-ray photoelectron spectroscopy (XPS), replication electron micrograph, and wettability measurement. The XPS measurements showed the copolymer composition of the outermost surface to be quite different from the bulk composition. It was found by replication electron micrograph that the block copolymer surface is not even, i.e., the polybutadiene domains are elevated above the polypeptide matrix. The results of contact angle measurements indicated the existence of an interfacial region between the α-helical A component and the B component at the surfaces of the block copolymer membranes.


Keyword:
Tri-Block Copolymer/ Poly(ε-N-benzyloxycarbonyl-L-lysine)/ Polybutadiene/ X-Ray Photoelectron Spectroscopy/ Replication Electron Micrograph/ Wettability

Published online: March 03, 2006
© Copyright, 2006 by The Society of Polymer Science, Japan

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