Publication Date:
2012-11-14
Description:
Hydrorepellency was conferred to cotton fabrics by an hybrid organic–inorganic finishing via sol–gel. The nanosol was prepared by co-hydrolysis and condensation of tetraethoxysilane (TEOS) and 1H,1H,2H,2H–fluorooctyltriethoxysilane (FOS), or hexadecyltrimethoxysilane (C 16 ), as precursors in weakly acid medium. The application on cotton was carried out by padding with various impregnation times, followed by drying and thermal treatment, varying the FOS add-on from 5 till 30 % on fabric weight or C 16 add-on from 5 to 10 %. Treated samples were tested in terms of contact angles, drop absorption times, washing fastness and characterized by SEM, XPS and FTIR-ATR analyses. In the case of FOS modified nanosol applied with an impregnation time of 24 h or C 16 modified nanosol, water contact angles values very close or even higher than 150° were measured, typical of a superhydrophobic surface. The application of the proposed sol–gel process yielded also a satisfactory treatment fastness to domestic washing, in particular for FOS modified nanosol. Content Type Journal Article Category Original Paper Pages 1-10 DOI 10.1007/s10570-012-9821-2 Authors Monica Periolatto, Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy Franco Ferrero, Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy Alessio Montarsolo, CNR ISMAC, Istituto per lo Studio delle Macromolecole, C.so Pella 16, 13900 Biella, Italy Raffaella Mossotti, CNR ISMAC, Istituto per lo Studio delle Macromolecole, C.so Pella 16, 13900 Biella, Italy Journal Cellulose Online ISSN 1572-882X Print ISSN 0969-0239
Print ISSN:
0969-0239
Electronic ISSN:
1572-882X
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
