Quantitative determination of mixtures of alkyl ethers of d-glucose

摘要: Abstract The distribution of methoxyl groups in repeatedly methylated cotton cellulose is agreement with the suggestion that elementary fibril basic structural element and suggests a simple model for these fibrils would have an average cross-section 8 × 10 chains. dimensions such are approximately 40 50 A agree closely electron-microscopical observations. This has surface which all readily accessible hydroxyl lie. Methylation quite rapid, but methylation below this takes place at lower rate. slower reaction proceeds little change group distribution, other than appearance tri-substituted d -glucose units rate similar to disappearance -glucose; it suggested stage occurs advancing zone passing through ordered material. Evidence also been obtained aggregation fibrils.