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Synthesis of Polyampholyte Brushes

Poly(DMAEMA- b - t -BMA). Poly(DMAEMA- b -MAA). Poly(DMAEMA). Synthesis of Polyampholyte Brushes. ● Polyampholytes are polymers that contain both negatively and positively charged groups

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Synthesis of Polyampholyte Brushes

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  1. Poly(DMAEMA-b-t-BMA) Poly(DMAEMA-b-MAA) Poly(DMAEMA) Synthesis of Polyampholyte Brushes ● Polyampholytes are polymers that contain both negatively and positively charged groups ● Polyampholytes exhibit opposite salt effect behavior compared to polyelectrolytes (one type of charge on chain) ● With added salt, the polymer brush thickness increases due to screening of the charged groups on the polymer (see table) ● The decrease in film thickness after pyrolysis reflects weight loss and attractive electostatic between acidic and basic groups aThickness measured by ellipsometry. All values ± 1 nm. bPolymer brush thickness after immersion in 0.5 M NaBr overnight. W. J. Brittain DMR-0423786 Program Officer: Andy Lovinger Langmuir 2006, submitted for publication.

  2. Passive Flow Control in Microchannels Using Diblock Copolymer Brushes Education: 1 PhD student, 2 undergraduate REU students and 1 postdoctoral research associate Publications & Presentations: 2 publications 2 book chapters 5 publications accepted or in press 6 conference proceedings 5 invited lectures 4 contributed presentations W. J. Brittain DMR-0423786 Program Officer: Andy Lovinger

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