Novel Michael addition networks containing poly(propylene glycol) telechelic oligomers

Brian D. Mather; Kevin M. Miller; Timothy E. Long

doi:10.1002/macp.200600167

Novel Michael addition networks containing poly(propylene glycol) telechelic oligomers

Brian D. Mather, Kevin M. Miller, Timothy E. Long

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

24 Scopus citations

Abstract

Polypropylene glycol) oligomers with molecular weights ranging from 1000 to 8000 g·mol^-1 were endfunctionalized with acetoacetate groups and subsequently crosslinked using carbon-Michael addition with PEG diacrylate. Gel fraction analysis, DMA, TGA, tensile, and swelling measurements were utilized to characterize the networks. The thermomechanical properties of the networks were analyzed with respect to the molecular weight between crosslink points (M_c) and the critical molecular weight for entanglement (M_e). Sampling experiments during crosslinking revealed the evolution of molecular weight with time and monomer conversion. Kinetic analyses of the Michael additions were performed using ¹H NMR spectroscopy, and the influence of basic catalyst and concentration was elucidated.

Original language	English (US)
Pages (from-to)	1324-1333
Number of pages	10
Journal	Macromolecular Chemistry and Physics
Volume	207
Issue number	15
DOIs	https://doi.org/10.1002/macp.200600167
State	Published - Aug 2 2006
Externally published	Yes

Keywords

Acetoacetates
Entanglement
Mechanical properties
Michael addition
Networks

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/macp.200600167

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title = "Novel Michael addition networks containing poly(propylene glycol) telechelic oligomers",

abstract = "Polypropylene glycol) oligomers with molecular weights ranging from 1000 to 8000 g·mol-1 were endfunctionalized with acetoacetate groups and subsequently crosslinked using carbon-Michael addition with PEG diacrylate. Gel fraction analysis, DMA, TGA, tensile, and swelling measurements were utilized to characterize the networks. The thermomechanical properties of the networks were analyzed with respect to the molecular weight between crosslink points (Mc) and the critical molecular weight for entanglement (Me). Sampling experiments during crosslinking revealed the evolution of molecular weight with time and monomer conversion. Kinetic analyses of the Michael additions were performed using 1H NMR spectroscopy, and the influence of basic catalyst and concentration was elucidated.",

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T1 - Novel Michael addition networks containing poly(propylene glycol) telechelic oligomers

AU - Mather, Brian D.

AU - Miller, Kevin M.

AU - Long, Timothy E.

PY - 2006/8/2

Y1 - 2006/8/2

N2 - Polypropylene glycol) oligomers with molecular weights ranging from 1000 to 8000 g·mol-1 were endfunctionalized with acetoacetate groups and subsequently crosslinked using carbon-Michael addition with PEG diacrylate. Gel fraction analysis, DMA, TGA, tensile, and swelling measurements were utilized to characterize the networks. The thermomechanical properties of the networks were analyzed with respect to the molecular weight between crosslink points (Mc) and the critical molecular weight for entanglement (Me). Sampling experiments during crosslinking revealed the evolution of molecular weight with time and monomer conversion. Kinetic analyses of the Michael additions were performed using 1H NMR spectroscopy, and the influence of basic catalyst and concentration was elucidated.

AB - Polypropylene glycol) oligomers with molecular weights ranging from 1000 to 8000 g·mol-1 were endfunctionalized with acetoacetate groups and subsequently crosslinked using carbon-Michael addition with PEG diacrylate. Gel fraction analysis, DMA, TGA, tensile, and swelling measurements were utilized to characterize the networks. The thermomechanical properties of the networks were analyzed with respect to the molecular weight between crosslink points (Mc) and the critical molecular weight for entanglement (Me). Sampling experiments during crosslinking revealed the evolution of molecular weight with time and monomer conversion. Kinetic analyses of the Michael additions were performed using 1H NMR spectroscopy, and the influence of basic catalyst and concentration was elucidated.

KW - Acetoacetates

KW - Entanglement

KW - Mechanical properties

KW - Michael addition

KW - Networks

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JO - Macromolecular Chemistry and Physics

JF - Macromolecular Chemistry and Physics

IS - 15

ER -

Novel Michael addition networks containing poly(propylene glycol) telechelic oligomers

Abstract

Keywords

ASJC Scopus subject areas

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