Synthesis and characterization of glycerol-adipic acid hyperbranched polyesters

Tracy Zhang, Bob A. Howell, Adina Dumitrascu, Steven J. Martin, Patrick B. Smith

Research output: Contribution to journalArticle

  • 21 Citations

Abstract

The structure and molecular weight of the hyperbranched polyesterification of adipic acid and glycerol were characterized by 13C NMR spectroscopy and size-exclusion chromatography as a function of reaction time and reaction stoichiometry. The glycerol substitution patterns and the extent of reaction of both glycerol and adipic acid were determined by NMR. The glycerol species concentrations determined by NMR were used with a Macosko-Miller conditional probability model to predict the hyperbranched polyester weight-average molecular weight. The model accommodated the difference in primary and secondary -OH reactivity and any substituent effects to glycerol -OH reactivity. In all cases, the predicted weight-average molecular weights were in excellent agreement with the absolute molecular weights determined by size-exclusion chromatography with light scattering detection.

Original languageEnglish (US)
Pages (from-to)5065-5072
Number of pages8
JournalPolymer (United Kingdom)
Volume55
Issue number20
DOIs
StatePublished - Sep 26 2014

Profile

Glycerol
Molecular weight
Acids
Size exclusion chromatography
Polyesters
Nuclear magnetic resonance
Anthralin
Dapsone
Deglutition Disorders
Stoichiometry
Light scattering
Nuclear magnetic resonance spectroscopy
Substitution reactions
Dandy-Walker Syndrome
Cerebellar Ataxia
Calculi
Immersion

Keywords

  • Biobased
  • Conditional probability
  • Hyperbranched polyester

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry

Cite this

Synthesis and characterization of glycerol-adipic acid hyperbranched polyesters. / Zhang, Tracy; Howell, Bob A.; Dumitrascu, Adina; Martin, Steven J.; Smith, Patrick B.

In: Polymer (United Kingdom), Vol. 55, No. 20, 26.09.2014, p. 5065-5072.

Research output: Contribution to journalArticle

Zhang, Tracy; Howell, Bob A.; Dumitrascu, Adina; Martin, Steven J.; Smith, Patrick B. / Synthesis and characterization of glycerol-adipic acid hyperbranched polyesters.

In: Polymer (United Kingdom), Vol. 55, No. 20, 26.09.2014, p. 5065-5072.

Research output: Contribution to journalArticle

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