Influence of zwitterions on thermomechanical properties and morphology of acrylic copolymers: Implications for electroactive applications

Tianyu Wu, Frederick L. Beyer, Rebecca H. Brown, Robert B. Moore, Timothy Edward Long

研究成果: Article査読

31 被引用数 (Scopus)

抄録

n-Butyl acrylate-based zwitterionomers and ionomers containing 3-[[2-(methacryloyloxy)ethyl](dimethyl)ammonio]-1-propanesulfonate (SBMA) and 2-[butyl(dimethyl)amino]ethyl methacrylate methanesulfonate (BDMAEMA MS), respectively, were synthesized using conventional free radical polymerization. Size-exclusion chromatography confirmed the molecular weights of the copolymers exceeded the critical molecular weight between entanglements (Me) for poly(n-butyl acrylate). Differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), and atomic force microscopy (AFM) revealed that zwitterionomers promoted more well-defined microphase separation than cationic analogues. Dynamic mechanical analyses (DMA) of the copolymers showed a rubbery plateau region due to physical cross-links between charges for zwitterionomers only. Since SBMA and BDMAEMA MS have very similar chemical structures, we attributed improved microphase separation and superior elastomeric performance of the zwitterionomers to stronger association between covalently tethered charged pairs.

本文言語English
ページ(範囲)8056-8063
ページ数8
ジャーナルMacromolecules
44
20
DOI
出版ステータスPublished - 2011 10 25
外部発表はい

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

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