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Interface formation between compatible polymers as determined by neutron reflectometry: PMMA and PVC
Author(s) -
Kunz Klaus,
Stamm Manfred
Publication year - 1994
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.19940780111
Subject(s) - neutron reflectometry , polymer , materials science , reflectometry , neutron , interface (matter) , composite material , neutron scattering , nuclear physics , physics , computer science , time domain , small angle neutron scattering , contact angle , computer vision , sessile drop technique
Initial stages of interdiffusion at the interface between two films of poly(methylmethacrylate) (PMMA) and poly(vinyl chloride) (PVC) have been determined by neutron reflectometry. Experiments are performed at temperatures between the glass transition temperatures of the homopolymers. PMMA chains are thus not mobile, but are dissolving in PVC. The growth of the interface width with time follows a power law, which depends on temperature, and the position of the interface moves in the direction of the immobile component. With a PVC film on top, the enrichment of PMMA at the free surface is observed at later times.