Elastic Behavior of Hydrophilic Polyurethane Networks Prepared from Poly(dioxolane)

Eric Gérard, Yves Gnanou, Paul Rempp*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Poly(dioxolane) (PDXL) gels are prepared by an end-linking procedure upon reacting, dihydroxy-PDXL chains with a polyisocyanate. Mechanical and swelling measurements are carried out on various swollen samples of PDXL networks. The experimental results concerning the moduli (G) can be explained if account is taken of the contribution of trapped entanglements (Langley-Graessley model). Data arising from equilibrium swelling measurements in dioxane and in water are used to calculate the Flory- Huggins interaction parameter 2 of the system: This method of determination is independent of the type of model used to evaluate the elastic free energy. A linear dependence of 2 versus —the polymer volume fraction of the gel—is found. The degradation behavior of these networks in acidic aqueous media is investigated as well.

Original languageEnglish (US)
Pages (from-to)4299-4304
Number of pages6
JournalMacromolecules
Volume23
Issue number19
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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