Phase separation in thin films of end-grafted block copolymers

O'Driscoll, B. M. D., Oren, R. and Hamley, I. W. ORCID: https://orcid.org/0000-0002-4549-0926 (2011) Phase separation in thin films of end-grafted block copolymers. Polymers for Advanced Technologies, 22 (6). pp. 924-932. ISSN 1042-7147 doi: 10.1002/pat.1597

Abstract/Summary

An atomic force microscopy investigation was carried out on various thick (30–120 nm) polymethyl methacrylate-bpolystyrene and poly(2-(dimethyl amino)ethyl methacrylate)-b-polystyrene films prepared via a grafting-from method. The structure of the films was examined with both topographic and phase imaging. Several different morphologies were observed including a perforated lamellar phase with irregular perforations. In addition, complementary small-angle X-ray scattering and reflectometry results measurements on a non-grafted polymer are presented.