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AvtorTkavc, Tina
Vesel, Alenka
Herrero Acero, Enrique
Fras Zemljič, Lidija
Naslov Comparison of oxygen plasma and cutinase effect on polyethylene terephthalate surface / Tina Tkavc ... [et al.]
Vrsta/vsebinatype of material članek - sestavni del
Jezikangleški
Leto2013
Fizični opisstr. 3570-3575
OpombeSoavtorji: Alenka Vesel, Enrique Herrero Acero, Lidija Fras Zemljič
Abstract
Predmetne oznake (nekontrolirane)PET surface / oxygen plasma / enzyme treatment / goniometry / chitosan adsorption
UDK678:544.7
Doi/ISAN10.1002/app.38526
PovzetekThe aim of the study is to activate inert PET surface in order to introduce the carboxyl groups and to obtain its hydrophilic character. Two advanced and environmentally friendly techniques were used for these purposes: i) oxygen plasma activation; ii) enzymatic treatment by cutinase. Differently treated PET foils were studied in terms of carboxylic group content (non-aqueous potentiometric titrations, XPS) and hydrophobic/hydrophilic character (goniometry). Moreover, the influence of both activation procedures onto chitosan adsorption was examined by XPS, zeta potential measurements and ATR-FTIR spectroscopy. Obtained results show that plasma activation gives for around 19% higher amount of carboxylic groups than cutinase treatment and is during the storage less stable. Results clearly show that the use of both surfaces activation processes increases the ability of PET foils for chitosan adsorption. Due to the fact that chitosan is an antimicrobial agent, obtained materials may be applied as an active packaging system.
COBISS.SI-ID16381206
Glej publikacijo TI=Journal of applied polymer science ISSN: 0021-8995.- Vol. 128, iss. 6 (2013), str. 3570-3575

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