Liquid-liquid phase equilibrium of polymer solutions and polymer blends under positive and negative pressure

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3 Citations (Scopus)

Abstract

In this paper we would like to give a brief review about the extensibility of the liquid-liquid locus into the negative pressure region. Negative pressure states are hardly explored; most researchers believe that the pressure scale ends at p = 0. We would like to show that this is not true, the p = 0 point is not a special point for liquids, it can be "easily" crossed. We are going to give a few example, where the extension of liquid-liquid locus for polymer blends and solutions below p = 0 gives us some interesting results, like the merging of UCST and LCST branches in weakly interacting polymer solutions or the reason why most UCST blends exhibit pressure induced immiscibility. Also, we will see what happens with the immiscibility island of aqueous polymer solutions when - reaching the critical molar mass - it "disappears".

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalChinese Journal of Polymer Science (English Edition)
Volume21
Issue number2
Publication statusPublished - Mar 2003

Fingerprint

Polymer blends
Polymer solutions
Phase equilibria
Liquids
Solubility
Molar mass
Merging

Keywords

  • Negative pressure
  • Phase transition
  • Polymer
  • Pressure
  • Solubility

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

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abstract = "In this paper we would like to give a brief review about the extensibility of the liquid-liquid locus into the negative pressure region. Negative pressure states are hardly explored; most researchers believe that the pressure scale ends at p = 0. We would like to show that this is not true, the p = 0 point is not a special point for liquids, it can be {"}easily{"} crossed. We are going to give a few example, where the extension of liquid-liquid locus for polymer blends and solutions below p = 0 gives us some interesting results, like the merging of UCST and LCST branches in weakly interacting polymer solutions or the reason why most UCST blends exhibit pressure induced immiscibility. Also, we will see what happens with the immiscibility island of aqueous polymer solutions when - reaching the critical molar mass - it {"}disappears{"}.",
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AB - In this paper we would like to give a brief review about the extensibility of the liquid-liquid locus into the negative pressure region. Negative pressure states are hardly explored; most researchers believe that the pressure scale ends at p = 0. We would like to show that this is not true, the p = 0 point is not a special point for liquids, it can be "easily" crossed. We are going to give a few example, where the extension of liquid-liquid locus for polymer blends and solutions below p = 0 gives us some interesting results, like the merging of UCST and LCST branches in weakly interacting polymer solutions or the reason why most UCST blends exhibit pressure induced immiscibility. Also, we will see what happens with the immiscibility island of aqueous polymer solutions when - reaching the critical molar mass - it "disappears".

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