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Quantitative ATR FT‐IR Analysis of Chemically Derivatized Plasma‐Modified Polymer Surfaces
Author(s) -
Klages ClausPeter,
Grishin Artur
Publication year - 2008
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200700135
Subject(s) - polymer , amination , molecule , analytical chemistry (journal) , plasma , infrared spectroscopy , atmospheric pressure plasma , materials science , fourier transform infrared spectroscopy , atmospheric pressure , infrared , surface modification , chemistry , chemical engineering , organic chemistry , optics , composite material , physics , quantum mechanics , engineering , catalysis , oceanography , geology
The quantitative evaluation of ATR FT‐IR spectra of chemically derivatized plasma‐modified polymer surfaces is proposed in order to derive area densities ρ (numbers or mole numbers per unit area) of chemical functional groups. Because of the very small thickness d mod of the modified surface region, a simple equation can be applied that allows the calculation of ρ from band area measurements on polymer samples and on suitable reference solutions that contain small molecules with the same functional groups. Applying this method to polymer surfaces plasma aminated in atmospheric‐pressure afterglows of N 2 + H 2 mixtures, an initial amination rate of about 1 nm −2 · s −1 has been determined.