Control of Thermoresponsive Properties of Urea End-Functionalized Poly(N-isopropylacrylamide) Based on the Hydrogen Bond Assisted Self-Assembly in Water

Part of the Springer Theses book series (Springer Theses)


This chapter describes the precise synthesis of urea end-functionalized poly(N-isopropylacrylamide)s (PNIPAM) by the atom transfer polymerization and the copper-catalyzed azide-alkyne cycloaddition as well as the control of the thermoresponsive properties of PNIPAM by changing the hydrogen bonding ability of the terminal urea groups.  The phase transition temperature of the obtained polymers varied depending on the hydrogen bonding ability of the introduced urea group.  The 1H NMR, dynamic light scattering, and transmission electron microscopy measurements proved that the urea end-functionalized PNIPAM was already forming aggregates in water even at a temperature below the cloud point due to the intermolecular hydrogen bonding of the terminal urea group, which was considered to cause the variation in the phase transition temperature.


High Performance Liquid Chromatography Cloud Point Atom Transfer Radical Polymerization Atom Transfer Radical Polymerization Size Exclusion Chromatography 


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Copyright information

© Springer Japan 2014

Authors and Affiliations

  1. 1.Faculty of EngineeringHokkaido UniversitySapporoJapan

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