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Compatibility of a statistical copolymer p(EMA‐CO‐MMA) with PS and PMMA
Author(s) -
Schubert Dirk W.,
Pannek Michael,
Müller Axel H. E.
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991480106
Subject(s) - copolymer , polystyrene , materials science , neutron reflectometry , deuterium , polymer chemistry , flory–huggins solution theory , compatibility (geochemistry) , composite material , neutron , polymer , physics , neutron scattering , quantum mechanics , small angle neutron scattering
The compositions of coexisting phases and the interface widths in blends of a statistical copolymer of poly(ethylmethacrylate — co — methylmethacrylate) (P(EMA 1,x ‐co‐MMA x )) and a deuterated polystyrene (PS(D)) as well as a deuterated poly(methylmethacrylate) (PMMA(D)) have been investigated by neutron reflectometry (NR). Interaction parameters are calculated from the compositions of coexisting phases and the interface width values. Utilizing a novel two dimensional scheme for graphical representation of the interaction parameters, the results are in very good agreement with studies on the interaction parameters for PS/PMMA, PS/PEMA and PEMA/PMMA blends. In particular, X EMA/MMA deduced from a NR experiment on a P(EMA‐block‐MMA(D)) diblock copolymer fits excellent into the scheme.