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Gel permeation chromatography in the study of the molecular weight distribution of the copolymer vinyl chloride–vinyl acetate
Author(s) -
Janča J.,
Kolínský M.
Publication year - 1977
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.1977.070210107
Subject(s) - vinyl chloride , vinyl acetate , gel permeation chromatography , copolymer , viscometer , polymer , materials science , fractionation , polymer chemistry , molar mass distribution , chemistry , analytical chemistry (journal) , chromatography , organic chemistry , viscosity , composite material
A sample of the commercial copolymer vinyl chloride–vinyl acetate was fractionated by the GPC method in the preparative scale. The fractions thus obtained were characterized by light scattering, viscometry, GPC in the analytical scale, chemical analysis, and IR spectroscopy. They were compared with those obtained by precipitation fractionation. The M̄ w and [η] values from the light scattering and viscometry of fractions of the commercial copolymer were employed for the calculation of the Mark‐Houwink equation valid in THF at 25°C for a copolymer with vinyl acetate content of 10–13%. Universal calibration of the [η]· M type was confirmed experimentally for the above polymer. Effects which could change the correct interpretation of the GPC data were discussed in detail. Correct interpretation of the GPC data showed an agreement between the GPC, light scattering, and viscometric data within 6–7%.