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Diffusive relaxation mode in diblock copolymer melts
Author(s) -
Fytas George,
Anastasiadis Spiros H.,
Semenov Alexander N.
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.19940790112
Subject(s) - dispersity , copolymer , relaxation (psychology) , materials science , dynamic light scattering , scattering , light scattering , chemical physics , polymer chemistry , thermodynamics , chemistry , optics , polymer , physics , nanotechnology , psychology , social psychology , nanoparticle , composite material
Photon correlation spectroscopy in the polarized light scattering geometry can be employed to study the dynamics of composition fluctuations in disordered diblock copolymer melts near the order‐to‐disorder transition. The origin of a diffusive relaxation mode, very recently measured on a series of undiluted copolymers, can be rationalized in terms of composition polydispersity effects rather than relaxation of equilibrium composition configurations of the fluctuation theory.