Premium
Characterization of aminated poly(ethylene terephthalate) surfaces for biomedical applications
Author(s) -
Nissen K. E.,
Stuart B. H.,
Stevens M. G.,
Baker A. T.
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27145
Subject(s) - diethylenetriamine , triethylenetetramine , polyethylene terephthalate , amination , ethylene , polymer chemistry , materials science , amine gas treating , polymer , x ray photoelectron spectroscopy , titration , molecule , annealing (glass) , chemical engineering , chemistry , organic chemistry , catalysis , composite material , engineering
Abstract Aminated poly(ethylene terephthalate) (PET) surfaces were characterized for their use as substrates for the attachment of biologically active molecules. Amines of different chain lengths, tetraethylenepentamine, triethylenetetraamine (TTETA), and diethylenetriamine (DETA), were investigated. X‐ray photoelectron spectroscopy was used to show that each amine introduced a comparable amount of nitrogen (5 atom %) to the PET surface. Contact‐angle and titration analyses indicated that the amination reaction was not restricted to the surface, with evidence of diffusion into the polymer by TTETA and DETA. As a result, degradation of the PET substrate, evidenced by mass loss, was observed to occur. Annealing of the PET films before amination at a temperature of 200°C reduced the extent of degradation without producing a decrease in the nitrogen content produced. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008