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Synthesis and characterization of a water-soluble nylon copolyamide

  • Yongping Bai
  • , Lei Huang
  • , Tong Huang
  • , Jun Long*
  • , Yongfeng Zhou
  • *Corresponding author for this work
  • School of Chemistry and Chemical Engineering, Harbin Institute of Technology
  • Shanghai Jiao Tong University

Research output: Contribution to journalArticlepeer-review

Abstract

A novel water-soluble copolyamide based on Nylon 66 was synthesized via solution-melt polycondensation of hexanedioic acid and sodium 5-sulfoisophthalate with 1,6-diaminohexane. The chemical structures of the products were ascertained by various spectroscopic techniques (FT-IR, Raman, and 1H NMR). The thermal properties of the polyamides under consideration were measured by TGA and DSC. According to the temperature dependence of FTIR spectra, it was found that the average strength of the intermolecular hydrogen bond of the water-soluble copolyamides becomes weak with increasing the temperature. It was found that the obtained random copolyamides could self-assemble into spherical micelles in aqueous solution with the size dependent on the hydrophilic fraction according to the DLS and TEM measurements.

Original languageEnglish
Pages (from-to)4171-4176
Number of pages6
JournalPolymer
Volume54
Issue number16
DOIs
StatePublished - 19 Jul 2013
Externally publishedYes

Keywords

  • Micelles
  • Self-assembly
  • Water-soluble polyamides

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