| Titre : |
Surface hydrophobization of CNF films by roll-to-roll HMDSO plasma deposition |
| Type de document : |
texte imprimé |
| Auteurs : |
Jari Vartiainen, Auteur ; Tero Malm, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 1145-1149 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Hydrophobie
Matériaux -- Propriétés barrières
Nanofibres
Projection au plasma
Revêtements:Peinture
SilylationLa silylation est l'introduction d'un groupe silyle, généralement substitué (R3Si–), dans une molécule.
Surfaces (technologie)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Cellulosic films are typically sensitive towards moisture which limits their industrial applicability. In this study the films made from cellulose nanofibrils (CNF) were surface silylated with hexamethyldisiloxane (HMDSO) by roll-to-roll plasma deposition. The effects on surface hydrophobicity were clear and indisputable. Water contact angles of non-modified and plasma-deposited CNF films were 23° and 103°, respectively. As a result of surface silylation the relative polarity decreased from 46.8% to 0.6%. Surface hydrophobicity correlated well with the plasma deposition line speeds (0.5, 5, and 10 m/min) and the water vapor barrier properties. Silylation also decreased the oxygen transmission rates both at 50% and 80% relative humidity as compared to non-modified CNF films. All films were completely impermeable to olive oil and intact in contact with castor oil, toluene, and n-heptane or mixtures of them. The developed surface hydrophobization method can be exploited in strengthening the position of cellulosic films in high performance film applications. |
| DOI : |
10.1007/s11998-016-9833-1 |
| En ligne : |
http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9833-1.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27276 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 6 (11/2016) . - p. 1145-1149
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Surface hydrophobization of CNF films by roll-to-roll HMDSO plasma deposition in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)
