Removal of a low molecular weight, crystallizable polymer fraction from solutions of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (polysulphone©)

J.G. Wijmans, C.A. Smolders

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Abstract

The oligomer fraction of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (Polysulphone©) with molecular weight between 450 and 900 daltons is responsible for the precipitation in concentrated solutions of polysulphone in N,N-dimethylformamide and other solvents. The precipitate is of a crystalline nature and consists mainly of the oligomers. These oligomers differ from the higher molecular weight molecules not only in crystallization properties. In a liquid-liquid phase separated system consisting of polysulphone, N,N-dimethylacetamide and water, the oligomers accumulate exclusively in the polysulphone-poor, dilute phase. The solubility parameter concept is used to illustrate the origin of this difference in behaviour. The removal of the oligomers from the dissolved polysulphone can be achieved by a crystallization process.
Original languageUndefined
Pages (from-to)1143-1146
JournalEuropean polymer journal
Volume19
Issue number12
DOIs
Publication statusPublished - 1983

Keywords

  • IR-67226

Cite this

@article{e1d22d93dfc548f1bd41bcdfac7c1603,
title = "Removal of a low molecular weight, crystallizable polymer fraction from solutions of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (polysulphone{\circledC})",
abstract = "The oligomer fraction of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (Polysulphone{\circledC}) with molecular weight between 450 and 900 daltons is responsible for the precipitation in concentrated solutions of polysulphone in N,N-dimethylformamide and other solvents. The precipitate is of a crystalline nature and consists mainly of the oligomers. These oligomers differ from the higher molecular weight molecules not only in crystallization properties. In a liquid-liquid phase separated system consisting of polysulphone, N,N-dimethylacetamide and water, the oligomers accumulate exclusively in the polysulphone-poor, dilute phase. The solubility parameter concept is used to illustrate the origin of this difference in behaviour. The removal of the oligomers from the dissolved polysulphone can be achieved by a crystallization process.",
keywords = "IR-67226",
author = "J.G. Wijmans and C.A. Smolders",
note = "Polysulphone is a registered trademark of Union Carbide",
year = "1983",
doi = "10.1016/0014-3057(83)90010-1",
language = "Undefined",
volume = "19",
pages = "1143--1146",
journal = "European polymer journal",
issn = "0014-3057",
publisher = "Elsevier",
number = "12",

}

TY - JOUR

T1 - Removal of a low molecular weight, crystallizable polymer fraction from solutions of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (polysulphone©)

AU - Wijmans, J.G.

AU - Smolders, C.A.

N1 - Polysulphone is a registered trademark of Union Carbide

PY - 1983

Y1 - 1983

N2 - The oligomer fraction of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (Polysulphone©) with molecular weight between 450 and 900 daltons is responsible for the precipitation in concentrated solutions of polysulphone in N,N-dimethylformamide and other solvents. The precipitate is of a crystalline nature and consists mainly of the oligomers. These oligomers differ from the higher molecular weight molecules not only in crystallization properties. In a liquid-liquid phase separated system consisting of polysulphone, N,N-dimethylacetamide and water, the oligomers accumulate exclusively in the polysulphone-poor, dilute phase. The solubility parameter concept is used to illustrate the origin of this difference in behaviour. The removal of the oligomers from the dissolved polysulphone can be achieved by a crystallization process.

AB - The oligomer fraction of poly[oxy-1,4-phenylenesulphonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene] (Polysulphone©) with molecular weight between 450 and 900 daltons is responsible for the precipitation in concentrated solutions of polysulphone in N,N-dimethylformamide and other solvents. The precipitate is of a crystalline nature and consists mainly of the oligomers. These oligomers differ from the higher molecular weight molecules not only in crystallization properties. In a liquid-liquid phase separated system consisting of polysulphone, N,N-dimethylacetamide and water, the oligomers accumulate exclusively in the polysulphone-poor, dilute phase. The solubility parameter concept is used to illustrate the origin of this difference in behaviour. The removal of the oligomers from the dissolved polysulphone can be achieved by a crystallization process.

KW - IR-67226

U2 - 10.1016/0014-3057(83)90010-1

DO - 10.1016/0014-3057(83)90010-1

M3 - Article

VL - 19

SP - 1143

EP - 1146

JO - European polymer journal

JF - European polymer journal

SN - 0014-3057

IS - 12

ER -