Supramolecular network polymers formed from polyamidine and carboxy-terminated telechelic poly(n-butyl acrylate) via amidinium-carboxylate salt bridges

Yoshio Furusho, Takeshi Endo, Keiko Higaki, Katsuhiro Kaetsu, Yuji Higaki, Ken Kojio, Atsushi Takahara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have prepared the amidinium-carboxylate salt bridge-based supramolecular network polymers from a carboxy-terminated telechelic poly(n-butyl acrylate) and a linear polyamidine having N,N′-di-substituted acetamidine group in the main chain. FTIR measurements indicated that the salt bridge was attributed to the three-dimensional network formation. Virtually, no fluidity was observed for the blend containing equimolar amounts of the carboxyl group and the amidine group, which showed a high G′ value of about 1 MPa at -5 °C. For comparison, the supramolecular network polymers crosslinked by ammonium-carboxylate salt were prepared using a linear polyethyleneimine instead of the polyamidine. The blend with equimolar amounts of the carboxyl group and the secondary amino group showed liquid-like fluidity with a G′ value of about 0.01 MPa at -5 °C, which was attributed to the fact that a certain amount of the carboxyl group remained as its free form, as evidenced by FTIR analysis.

Original languageEnglish
Pages (from-to)2148-2155
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume54
Issue number14
DOIs
Publication statusPublished - Jul 15 2016

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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