Continuity of solvent quality in polymer solutions. Poor-solvent to θ-solvent continuity in some polystyrene solutions

A. Imre, W. Alexander Van Hook

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Critical temperatures for polystyrene/methyl acetate (PS/MA) and polystyrene/ethyl formate (PS/EF) solutions were measured at positive (PS/MA, PS/EF) and negative (PS/MA) pressure. The results confirm that solvent quality is sensitive to pressure; some solvents, designated Θ, at Pnominal ∼ 0, undergo a Θ-to-poor transition at negative pressure, and others, nominally designated "poor," show a poor-to-Θ transition at positive pressure. Thus, any dichotomous division into sets of "poor" and "Θ" solvents is inaccurate, unless it accounts for the effects of pressure and other variables on solvent quality.

Original languageEnglish
Pages (from-to)1251-1259
Number of pages9
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume35
Issue number8
Publication statusPublished - Jun 1997

Fingerprint

Polystyrenes
Polymer solutions
continuity
polystyrene
polymers
acetates
formates
division
critical temperature
methyl acetate
Temperature
ethyl formate

Keywords

  • Consolute temperatures
  • Demixing
  • Ethyl formate
  • Methyl acetate
  • Negative pressure
  • Phase equilibria
  • Polystyrene
  • Pressure
  • Solvent

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Continuity of solvent quality in polymer solutions. Poor-solvent to θ-solvent continuity in some polystyrene solutions. / Imre, A.; Van Hook, W. Alexander.

In: Journal of Polymer Science, Part B: Polymer Physics, Vol. 35, No. 8, 06.1997, p. 1251-1259.

Research output: Contribution to journalArticle

@article{52fe26b285584fa59556fe0af52a0af9,
title = "Continuity of solvent quality in polymer solutions. Poor-solvent to θ-solvent continuity in some polystyrene solutions",
abstract = "Critical temperatures for polystyrene/methyl acetate (PS/MA) and polystyrene/ethyl formate (PS/EF) solutions were measured at positive (PS/MA, PS/EF) and negative (PS/MA) pressure. The results confirm that solvent quality is sensitive to pressure; some solvents, designated Θ, at Pnominal ∼ 0, undergo a Θ-to-poor transition at negative pressure, and others, nominally designated {"}poor,{"} show a poor-to-Θ transition at positive pressure. Thus, any dichotomous division into sets of {"}poor{"} and {"}Θ{"} solvents is inaccurate, unless it accounts for the effects of pressure and other variables on solvent quality.",
keywords = "Consolute temperatures, Demixing, Ethyl formate, Methyl acetate, Negative pressure, Phase equilibria, Polystyrene, Pressure, Solvent",
author = "A. Imre and {Van Hook}, {W. Alexander}",
year = "1997",
month = "6",
language = "English",
volume = "35",
pages = "1251--1259",
journal = "Journal of Polymer Science, Part B: Polymer Physics",
issn = "0887-6266",
publisher = "John Wiley and Sons Inc.",
number = "8",

}

TY - JOUR

T1 - Continuity of solvent quality in polymer solutions. Poor-solvent to θ-solvent continuity in some polystyrene solutions

AU - Imre, A.

AU - Van Hook, W. Alexander

PY - 1997/6

Y1 - 1997/6

N2 - Critical temperatures for polystyrene/methyl acetate (PS/MA) and polystyrene/ethyl formate (PS/EF) solutions were measured at positive (PS/MA, PS/EF) and negative (PS/MA) pressure. The results confirm that solvent quality is sensitive to pressure; some solvents, designated Θ, at Pnominal ∼ 0, undergo a Θ-to-poor transition at negative pressure, and others, nominally designated "poor," show a poor-to-Θ transition at positive pressure. Thus, any dichotomous division into sets of "poor" and "Θ" solvents is inaccurate, unless it accounts for the effects of pressure and other variables on solvent quality.

AB - Critical temperatures for polystyrene/methyl acetate (PS/MA) and polystyrene/ethyl formate (PS/EF) solutions were measured at positive (PS/MA, PS/EF) and negative (PS/MA) pressure. The results confirm that solvent quality is sensitive to pressure; some solvents, designated Θ, at Pnominal ∼ 0, undergo a Θ-to-poor transition at negative pressure, and others, nominally designated "poor," show a poor-to-Θ transition at positive pressure. Thus, any dichotomous division into sets of "poor" and "Θ" solvents is inaccurate, unless it accounts for the effects of pressure and other variables on solvent quality.

KW - Consolute temperatures

KW - Demixing

KW - Ethyl formate

KW - Methyl acetate

KW - Negative pressure

KW - Phase equilibria

KW - Polystyrene

KW - Pressure

KW - Solvent

UR - http://www.scopus.com/inward/record.url?scp=0031166196&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031166196&partnerID=8YFLogxK

M3 - Article

VL - 35

SP - 1251

EP - 1259

JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

SN - 0887-6266

IS - 8

ER -