Characterization and evaluation of the hydrolytic stability of trifluoroacetylated cellulose fibers

abstract

The controlled heterogeneous modification of cellulose fibers with trifluoroacetic anhydride was investigated. The characterization of the ensuing materials was per-formed by elemental analysis, FTIR spectroscopy, X-ray diffraction (XRD), thermogravimetry, and surface analysis (XPS, ToF-SIMS, and contact angles measurements). The trifluoroacetylation enhanced significantly the hydrophobic and lipophobic character of the fibers, whereas their thermal stability and cristallinity were only modestly affected by this treatment, except under the most severe conditions for the latter. Their hydrolytic stability to water vapour was also assessed as a function of the air humidity and shown to be lower than that of still liquid water in the case of a saturated atmosphere. (C) 2007 Elsevier Inc. All rights reserved.

keywords

COMPOSITE-MATERIALS; PLASMA TREATMENT; SURFACE; NANOCOMPOSITES; ESTERIFICATION; ESTERS; PAPER; ACID

subject category

Chemistry

authors

Cunha, AG; Freire, CSR; Silvestre, AJD; Neto, CP; Gandini, A; Orblin, E; Fardim, P

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".