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Analysis on the fractionation of polyethylene–polypropylene blends
Author(s) -
Ogawa Toshio,
Tanaka Shoichi,
Inaba Tadami
Publication year - 1974
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.1974.070180506
Subject(s) - fractionation , polypropylene , polyethylene , molar mass distribution , solubility , copolymer , materials science , polymer blend , polymer , partition coefficient , solvent , hildebrand solubility parameter , polymer chemistry , chemical engineering , chromatography , chemistry , composite material , organic chemistry , engineering
The hypothetical fractionation of polyethylene–polypropylene blends was carried out by assuming adequate molecular weight distribution and partition of polymer between two liquid phases for each hompolymer, and also by using the previously reported data of the molecular weight dependence on solubility. The experimental fractionation of blends was also carried out by the solvent gradient method, and the results were compared with those obtained by the hypothetical fractionation. Both results agreed fairly well in various distribution forms. Therefore, these results may provide valuable information for component or compositional analysis of unknown samples or copolymerization products.