Bi-phobic cellulose fibers derivatives via surface trifluoropropanoylation
authors Cunha, AG; Freire, CSR; Silvestre, AJD; Neto, CP; Gandini, A; Orblin, E; Fardim, P
nationality International
journal LANGMUIR
keywords ESTERS; TRIFLUOROACETATES; ESTERIFICATION; PAPER; WATER; ACIDS; WOOD
abstract The surface modification of cellulose fibers with 3,3,3-trifluoropropanoyl chloride (TFP) was studied in a toluene suspension. The characterization of the modified fibers was performed by elemental analysis, Fourier transform infrared (FTIR), C-13-solid-state NMR, X-ray diffraction, thermogravimetry, and surface analysis (XPS, ToF-SIMS, and contact angles measurements). The degree of substitution (DS) of the ensuing trifluoropropanoylated fibers ranged from less than 0.006 to 0.30, and in all instances the fibers' surface acquired a high hydrophobicity and lipophobicity resulting from a drastic reduction in its energy. The hydrolytic stability of these cellulose derivatives was also evaluated and shown to be permanent in,time in the presence of neutral water, still appreciable in basic aqueous solution at pH 9, but, as expected quite poor at pH 12.
publisher AMER CHEMICAL SOC
issn 0743-7463
year published 2007
volume 23
issue 21
beginning page 10801
ending page 10806
digital object identifier (doi) 10.1021/10017192
web of science category Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary
subject category Chemistry; Materials Science
unique article identifier WOS:000249948700051
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journal analysis (jcr 2019):
journal impact factor 3.557
5 year journal impact factor 3.702
category normalized journal impact factor percentile 64.177
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