title: Analysis of positions of substitution of O-methyl or O-ethyl groups in partially methylated or ethylated cellulose by the reductive-cleavage method.
abstract: A method is described for the analysis of positions of substitution of O-methyl and O-ethyl groups in commercial samples of O-methylcellulose and O-ethylcellulose, respectively. The method requires perethylation of O-methyl-cellulose and permethylation of O-ethylcellulose. Subsequent reductive cleavage of both polymers gives the same eight products, which are analyzed as their O-acetyl derivatives by gas-liquid chromatography.
authors.affiliation: Department of Chemistry, University of Minnesota, Minneapolis 55455.
authors.forename: A J
authors.initials: AJ
authors.lastname: D'Ambra
authors.forename: M J
authors.initials: MJ
authors.lastname: Rice
authors.forename: S G
authors.initials: SG
authors.lastname: Zeller
authors.forename: P R
authors.initials: PR
authors.lastname: Gruber
authors.forename: G R
authors.initials: GR
authors.lastname: Gray
mesh_terms: D000478:Alkylation; D002482:Cellulose / Q000031:analogs & derivatives*; D002849:Chromatography, Gas / Q000379:methods; D006868:Hydrolysis; D007202:Indicators and Reagents; D008745:Methylation; D008747:Methylcellulose; D010084:Oxidation-Reduction
chemical_list: D007202:Indicators and Reagents; C013517:ethyl cellulose; D002482:Cellulose; D008747:Methylcellulose