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Liquid‐Glassy Polymer Diffusion: Effects of Liquid Molecular Weight and Temperature
Author(s) -
Tomba J. Pablo,
Arzondo Luis M.,
Carella José M.,
Pastor José M.
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200600658
Subject(s) - polymer , diffusion , polymer chemistry , raman spectroscopy , phenylene , kinetics , glass transition , chemical physics , self diffusion , oxide , chemistry , chemical engineering , materials science , thermodynamics , organic chemistry , optics , physics , self service , quantum mechanics , marketing , business , engineering
We examine mechanistic aspects of the diffusion between a series of liquid polystyrenes (PS) and a glassy poly(phenylene oxide) (PPO) matrix, through the use of confocal Raman microspectroscopy. The results show that the diffusion kinetics has Fickean characteristics, similar to those found in liquid‐liquid polymer diffusion. No signatures of the linear regime typical of the case‐II diffusion mechanism were found. Overall, these observations are consistent with the claim that case‐II is unlikely to occur in liquid‐glassy polymer diffusion.