Silk samples treated in an appositely set-up radio frequency SF6 plasma reactor under different operation conditions, were characterized by XPS, EPR, DSC, XRD, and ATR analyses and water contact angle measurements, and also as a function of storage time after the treatment. Efficient attachment of F atoms on the polymer surface occurred during the plasma treatment, imparting water repellency to it. Also the percentage of surface oxygen increased after the treatment, partially as a consequence of radical scavenging by mol. oxygen and the formation of peroxides. An increase in silk crystallinity during the treatment seems to contribute to ensuring durable water repellency properties.
|Titolo:||Surface modifications of silk by cold SF6 plasma treatment|
SELLI, ELENA (Primo)
|Settore Scientifico Disciplinare:||Settore CHIM/02 - Chimica Fisica|
Settore CHIM/04 - Chimica Industriale
|Data di pubblicazione:||2001|
|Digital Object Identifier (DOI):||10.1002/1521-3935(20010601)202:9<1672::AID-MACP1672>3.0.CO;2-W|
|Appare nelle tipologie:||01 - Articolo su periodico|