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Additives in transparent glassy polymers: Concentration profiles obtained by solvent diffusion technique
Author(s) -
Guerra G.,
Moschetti A.,
Carfagna C.,
Mandara U.,
Cutolo A.,
Solimeno S.
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070290703
Subject(s) - solvent , polymer , diffusion , methyl methacrylate , materials science , desorption , methanol , chemical engineering , chloride , zinc , analytical chemistry (journal) , polymer chemistry , chemistry , organic chemistry , thermodynamics , composite material , adsorption , copolymer , physics , metallurgy , engineering
Concentration profiles of additives, introduced in transparent glassy polymers by solvent diffusion technique, are analyzed by measuring refractive index profiles. Such profiles depend not only on the diffusion conditions (temperature, time, kind of solvent, concentration), but also on the conditions of solvent desorption from the polymer (temperature, pressure, solvent, and additive volatilities). In particular, poly(methyl methacrylate) (PMMA) samples modified in an outer shell by zinc chloride carried by methanol are considered.