Cellulose esters with linear aliphatic acyl substituents ranging in size from CI2 (lauric acid) to C,, (eicosanoic acid) were prepared in homogeneous solution (DMAc/LiCl) using a novel synthetic method based on the use of a mixedp-toluenesulfonic/carboxylic acid anhydride. The resulting waxy cellulo
Novel Bulky Esters of Cellulose
β Scribed by Thomas Heinze; Matthias Pohl; Jens Schaller; Frank Meister
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 173 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1616-5187
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β¦ Synopsis
Abstract
Novel bulky esters of cellulose were synthesized homogeneously, applying the solvent systems DMA/LiCl or DMSO/TBAF, by conversion of the biopolymer with aryl polyester dendrons. The carboxylic acid moieties were efficiently activated in situ with CDI or the acid chloride was applied. Cellulose esters with DS values of up to 0.7 were obtained. The functionalization pattern was analyzed by different NMR spectroscopic techniques indicating that not only position 6 (primary hydroxyl group) but also the secondary one at position 2 was included in the reaction.
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