Synthesis and characterization of novel segmented polyionenes based on polydimethylsiloxane soft segments

Sudipto Das, Jonathan D. Goff, Sharlene Williams, David Salas-De La Cruz, J. S. Riffle, Timothy Edward Long, Karen I. Winey, Garth L. Wilkes

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Novel polydimethylsiloxane (PDMS) based polyionenes were synthesized by a modified Menschutkin reaction involving reaction between bromo-terminated PDMS oligomers and various ditertiary amino compounds. In this study, the nature of the hard segment was varied by using various ditertiary amino compounds and in some cases by incorporating chain extenders, while the soft segment content was varied by changing the molecular weight of the PDMS oligomers. The mechanical properties of these materials were found to be dependent on both the nature and amount of the hard segments. These materials also showed distinct evidence of a microphase-separated morphology where under normal conditions, the hard segments formed in what are believed to be cylindrical ion-rich microdomains dispersed randomly in the soft PDMS matrix. When subjected to uniaxial deformation, the ionic cylinders were found to orient along their long axes in the stretch direction.

本文言語English
ページ(範囲)215-224
ページ数10
ジャーナルJournal of Macromolecular Science, Part A: Pure and Applied Chemistry
47
3
DOI
出版ステータスPublished - 2010 3月 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 化学 (全般)
  • ポリマーおよびプラスチック
  • 材料化学

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