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

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 Edward Long

^*Corresponding author for this work

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

44 Citations (Scopus)

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

ASJC Scopus subject areas

Organic Chemistry
Materials Chemistry
Polymers and Plastics
Inorganic Chemistry

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10.1021/ma201211j

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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 Edward}",

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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 Edward

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

Abstract

ASJC Scopus subject areas

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