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 E. Long

doi:10.1021/ma201211j

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 E. Long

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

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 (M_e) 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.

Original language	English (US)
Pages (from-to)	8056-8063
Number of pages	8
Journal	Macromolecules
Volume	44
Issue number	20
DOIs	https://doi.org/10.1021/ma201211j
State	Published - Oct 25 2011
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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@article{d1cd304aec66440ca246f1963bde47a8,

title = "Influence of zwitterions on thermomechanical properties and morphology of acrylic copolymers: Implications for electroactive applications",

abstract = "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.",

author = "Tianyu Wu and Beyer, {Frederick L.} and Brown, {Rebecca H.} and Moore, {Robert B.} and Long, {Timothy E.}",

note = "Funding Information: Special thanks to Matthew D. Burstein for the production of the figures included in this review and to Jennifer K. Spinler for her constructive feedback on the manuscript. This work was supported by National Institutes of Health (NIH) National Institute of Digestive and Kidney Disease (UH2 DK083990, R01 DK065075, P30 DK56338), NIH National Center for Complementary and Alternative Medicine (R01 AT004326 and R21 AT003482), and NIH National Human Genome Research Institute (U54 HG003272).",

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T1 - Influence of zwitterions on thermomechanical properties and morphology of acrylic copolymers

T2 - Implications for electroactive applications

AU - Wu, Tianyu

AU - Beyer, Frederick L.

AU - Brown, Rebecca H.

AU - Moore, Robert B.

AU - Long, Timothy E.

N1 - Funding Information: Special thanks to Matthew D. Burstein for the production of the figures included in this review and to Jennifer K. Spinler for her constructive feedback on the manuscript. This work was supported by National Institutes of Health (NIH) National Institute of Digestive and Kidney Disease (UH2 DK083990, R01 DK065075, P30 DK56338), NIH National Center for Complementary and Alternative Medicine (R01 AT004326 and R21 AT003482), and NIH National Human Genome Research Institute (U54 HG003272).

PY - 2011/10/25

Y1 - 2011/10/25

N2 - 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.

AB - 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.

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

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