Mioara Drobota (Author), Zdenka Peršin (Author), Lidija Fras Zemljič (Author), Tamilselvan Mohan (Author), Karin Stana-Kleinschek (Author), Aleš Doliška (Author), Matej Bračič (Author), Volker Ribitsch (Author), Valeria Harabagiu (Author), Sergiu Coseri (Author)

Abstract

The functionalization of poly(ethylene terephthalate) (PET) surface films by reactions with multifunctional amines such as triethylenetetramine (TETA), and tetraethylenepentamine (TEPA) was investigated. For the functionalization of PET films surface we used a new way of treatment, a 'sandwich model'. Physical-chemical properties of functionalized PET films were analysed. Qualitative and quantitative determination of the introduced amine groups were examined by means of Fourier Transform Infrared Attenuated Total Reflexion(FTIR - ATR), X-ray photoelectron spectroscopy (XPS), and potentiometric titration. Gained wetting properties were determined by using contact angle measurements and thoroughly analysed by acid-base approach. In addition, surface topography was investigated by atomic force microscopy (AFM). The amount of the introduced amino groups after TETA incorporation has been found to be two times higher as compared to TEPA. Wetting properties were significantly improved after aminolysis. Surface free energy was higher for PET - TETA treated film than that observed for PET - TEPA treated which is in accordance with titration results. The collagen immobilization onto PET treated films was evidenced by using AFM and subsequently by using XPS.

Keywords

PET;aminolysis;AFM;collagen immobilization;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 544.7
COBISS: 17094678 Link will open in a new window
ISSN: 1895-1066
Views: 969
Downloads: 376
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Other data

Secondary language: Slovenian
Secondary keywords: PET;aminoliza;mikroskopija na atomsko silo;imobilizacija kolagena;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: str. 1786-1798
Volume: ǂVol. ǂ11
Issue: ǂno. ǂ11
Chronology: 2013
DOI: 10.2478/s11532-013-0319-z
ID: 9599412