Synthesis and association behavior in an aqueous media of amphiphilic alternating copolyimides having sulfonic acid group

Yasunari Othsuka, Takashi Hamada, Seiji Sakamoto, Kazuaki Kudo

Research output: Contribution to conferencePaper

Abstract

We herein report the synthesis of amphiphilic alternating copolyimides (AACs) and their aggregation behavior in an aqueous system. AACs showed good solubility toward 20 mM Tris HC1 buffer (pH=7.0). The aggregate formation of AACs was confirmed through UV spectral study using pinacyanol chloride as a spectrophotomeric probe. In dynamic light scattering, AACs showed two distinct populations of the aggregated species. For smaller particles, the diameter was estimated to be 100-300 nm. In contrast, those of larger particles were 2-3 μm. Such an aggregate formation was not observed with the random copolyimide counterparts. It is worth mentioning that diameters of aggregates were much larger than those of known amphiphilic polymers.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period05/5/2505/5/27

Keywords

  • Alicyclic polyimide
  • Alternating copolymer
  • Amphiphilic polyimide
  • Self-assembly
  • Sulfonic acid group

ASJC Scopus subject areas

  • Engineering(all)

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    Othsuka, Y., Hamada, T., Sakamoto, S., & Kudo, K. (2005). Synthesis and association behavior in an aqueous media of amphiphilic alternating copolyimides having sulfonic acid group. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.