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Effects of the combination of solvent and nonsolvent on the fractionation of polypropylene
Author(s) -
Ogawa Toshio,
Tanaka Shoichi,
Hoshino Sadao
Publication year - 1972
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.1972.070160909
Subject(s) - fractionation , decalin , solvent , polypropylene , kerosene , molar mass distribution , fraction (chemistry) , chemistry , polymer chemistry , polymer , mass fraction , chromatography , organic chemistry , materials science , catalysis
The effects of the combination of solvent and nonsolvent on the column fractionation of polypropylene were investigated. Decalin, kerosene, and α‐chloronaphthalene were employed as the solvents, whereas ethyl and butyl carbitol were employed as the nonsolvents. It was found that the molecular weight distribution of the fractions was not very significantly affected by the combination of solvent and nonsolvent. By applying Caplan's theory, namely, that M̄ ‐1/2 is a linear function of the weight fraction of solvent contained in the eluent (where M is the average molecular weight of a fraction), we concluded that to conduct a good fractionation both the solvent and the nonsolvent should be poorer solvents for the polymer.