TY - JOUR
T1 - Chemical modification and characterization of poly(ethylene terephthalate) surfaces for collagen immobilization
AU - Drobota, Mioara
AU - Persin, Zdenka
AU - Zemljic, Lidija Fras
AU - Mohan, Tamilselvan
AU - Stana-Kleinschek, Karin
AU - Doliska, Ales
AU - Bracic, Matej
AU - Ribitsch, Volker
AU - Harabagiu, Valeria
AU - Coseri, Sergiu
PY - 2013/11/1
Y1 - 2013/11/1
N2 - 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. [Figure not available: see fulltext.]
AB - 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. [Figure not available: see fulltext.]
KW - AFM
KW - Aminolysis
KW - Collagen immobilization
KW - PET
KW - Wettability
UR - http://www.scopus.com/inward/record.url?scp=84883412021&partnerID=8YFLogxK
U2 - 10.2478/s11532-013-0319-z
DO - 10.2478/s11532-013-0319-z
M3 - Article
AN - SCOPUS:84883412021
SN - 1895-1066
VL - 11
SP - 1786
EP - 1798
JO - Central European Journal of Chemistry
JF - Central European Journal of Chemistry
IS - 11
ER -