Synthesis and aqueous solution behavior of water-soluble polyurethane (IPDI-PPG-DMPA) resin

In Woo Cheong, Mamoru Nomura, Jung Hyun Kim

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21 Citations (Scopus)


Two types of polyurethane (PU) resins were synthesized by polyaddition of isophorone diisocyanate (IPDI), poly (propylene glycols: PPG-750 and PPG-2000), and 2,2-bis(hydroxymethyl)propionic acid (DMPA). Chemical structure of PU was confirmed by 1H and 13C NMR analysis. The PU resins were found to be water-dispersible or soluble by neutralization of carboxylic acid groups in DMPA. Aggregate formation behavior of the PU and solubilizing ability for hydrophobic probe (pyrene) were investigated at 100% neutralization. Average aggregate sizes of the PU resins measured by photon correlation spectroscopy showed large values (ca. 25-120 nm). The aggregate sizes were strongly affected by the concentration of the resin and total ionic strength in the aqueous phase. The PU resins showed superior solubilizing ability for pyrene in comparison with that of conventional short chain surfactant. Additionally, critical micelle concentration (CMC) of the PU resins obtained from pyrene fluorescence method showed extremely low values (< 10-3 mol/dm3 water) and their aggregate numbers were 7.2 and 6.6 for PUR-750 and PUR-2000, respectively.

Original languageEnglish
Pages (from-to)2221-2227
Number of pages7
JournalMacromolecular Chemistry and Physics
Issue number17
Publication statusPublished - 2000 Dec 6

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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