Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (3): 400-403.

• Articles • Previous Articles     Next Articles

Facile Route to Aromatic Hyperbranched Poly(ester amines)

ZHANG Zheng-hui and SHI Wen-fang*   

  1. Department of Polymer Science and Engineering, Joint Laboratory of Polymer Thin Films and Solution, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2008-03-01 Revised:2008-03-24 Online:2009-05-25 Published:2009-08-07
  • Contact: SHI Wen-fang, E-mail: wfshi@ustc.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.50633010).

Abstract:

The aromatic hyperbranched poly(ester amines)(AHPEAs) were successfully synthesized via the mild condensation of N-4-cyanobenzyl diethanolamine hydrogenchloride as an AB2 monomer in concentrated HCl. The polymerization was monitored by FTIR to suppose the reasonable reaction mechanism. The degree of branching was determined to be 0.55 by 1H NMR with an increased conversion of up to 96%. The glass transition temperature was measured by differential scanning calorimetry to range from –19 to 15 °C. The molecular weights and polydispersities were investigated by gel permeation chromatography.

Key words: Hyperbranch; Poly(ester amine); 4-Cyanobenzyl chloride; Alcoholysis