Issue 43, 2017

Quantitative analysis of cellulose acetate with a high degree of substitution by FTIR and its application

Abstract

The degree of substitution (DS) of highly acetylated cellulose acetate (CA) was quantitatively evaluated by FTIR. Seven standard samples, the DS ranging from 1.80 to 2.85, prepared by mixing appropriate amounts of commercial cellulose triacetate and commercial cellulose were analyzed for their DS by a FTIR method, and the relationship between the DS and the ratios of specific peak absorbance intensity or integral area calculated from FTIR spectra was confirmed to be a polynomial fitting of the second degree. The DS values of CA prepared by heterogeneous acetylation under different conditions determined by FTIR based on the resulting quadratic polynomial equations were compared with those determined by a titration method. The results showed that the DS value was well predicted by FTIR spectra and the average percentage errors were lower than 2.31%. The specific peak parameter ratio can effectively evaluate and monitor the acetylation process. Additionally, the results of dynamic analysis indicated that the heterogeneous acetylation reaction followed a second-order kinetic model when the DS value exceeded 2.0.

Graphical abstract: Quantitative analysis of cellulose acetate with a high degree of substitution by FTIR and its application

Article information

Article type
Paper
Submitted
11 Sep 2017
Accepted
06 Oct 2017
First published
09 Oct 2017

Anal. Methods, 2017,9, 6194-6201

Quantitative analysis of cellulose acetate with a high degree of substitution by FTIR and its application

P. Fei, L. Liao, B. Cheng and J. Song, Anal. Methods, 2017, 9, 6194 DOI: 10.1039/C7AY02165H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements