کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
612016 880690 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization and evaluation of the hydrolytic stability of trifluoroacetylated cellulose fibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Characterization and evaluation of the hydrolytic stability of trifluoroacetylated cellulose fibers
چکیده انگلیسی

The controlled heterogeneous modification of cellulose fibers with trifluoroacetic anhydride was investigated. The characterization of the ensuing materials was performed 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.

It is possible to transform the surface of cellulose fibers from very hydrophilic to highly hydrophobic and lipophobic and to make them regain their pristine properties by a simple hydrolytic treatment.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 316, Issue 2, 15 December 2007, Pages 360–366
نویسندگان
, , , , , , ,