NDLI: Bi-acylation of cellulose: determining the relative reactivities of the acetyl and fatty-acyl moieties

Content Provider	Springer Nature Link
Author	Peydecastaing, J. Vaca Garcia, C. Borredon, E.
Copyright Year	2011
Abstract	The global reaction between acetic anhydride and a fatty acid yields, at equilibrium, an asymmetric acetic-aliphatic anhydride in a medium containing finally: acetic-fatty anhydride, acetic anhydride, fatty acid, acetic acid and fatty anhydride. No solvent or catalyst was used to evaluate the impact of the actual reactivity of the anhydrides. The competition between the formation of acetyl and fatty acyl ester functions was evaluated by determining the ratio of acetyl/fatty acyl groups grafted on solid cellulose. The influence of temperature, reaction time, and length of fatty chain on the total degree of substitution and on the ratio of acetyl/fatty acyl ester functions was investigated. For the first time, a correlation has been established between esterification and the length of the aliphatic chain of the fatty acid. Reactivity of the medium decreased with the number of carbons in the fatty acid, raised to the power 2.37.
Starting Page	1015
Ending Page	1021
Page Count	7
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	18
Issue Number	4
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-04-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mixed cellulose esters Mixed anhydrides Acetic-fatty esters Polymer Sciences Physical Chemistry Bioorganic Chemistry Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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