Polymerization of β-cyclodextrin with maleic anhydride and structural characterization of the polymers

Tomasz Girek, Dong Hoon Shin, Seung Taik Lim

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

β-Cyclodextrin (β-CD) polymers were prepared by cross-linking β-CD with maleic anhydride (MA) in anhydrous N,N-dimethyl formamide (DMF) in the presence of NaH. The weight-average molecular weight (Mw) and the chemical structure of the polymers were determined using high performance size exclusion chromatography (HPSEC) with refractive index (RI) and multiangle laser-light scattering (MALLS) detectors, and 1H NMR spectroscopy. The molecular weight of the polymer increased as the reaction temperature was raised. With a reaction of 4 h at 130 °C at a molar ratio of 1:7:7 for β-CD:NaH:MA, the reaction products were water-insoluble, and contained major polymer fractions with Mw greater than 200 kDa. Smaller and water-soluble polymer fractions were produced at 100 °C or lower reaction temperature. 1H-NMR spectra revealed that the CD polymers contained both mono- and diesters of butenedioic acid, and diesters became prevalent as the reaction time and temperature were raised.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalCarbohydrate Polymers
Volume42
Issue number1
DOIs
Publication statusPublished - 2000 May 1

Fingerprint

Maleic Anhydrides
cyclodextrins
Cyclodextrins
Maleic anhydride
Polymerization
polymerization
polymers
Polymers
Molecular Weight
Molecular weight
Temperature
molecular weight
Dimethylformamide
Refractometry
Size exclusion chromatography
Water
dimethylformamide
temperature
Reaction products
refractive index

ASJC Scopus subject areas

  • Food Science
  • Biochemistry

Cite this

Polymerization of β-cyclodextrin with maleic anhydride and structural characterization of the polymers. / Girek, Tomasz; Shin, Dong Hoon; Lim, Seung Taik.

In: Carbohydrate Polymers, Vol. 42, No. 1, 01.05.2000, p. 59-63.

Research output: Contribution to journalArticle

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