Amine-derivatized poly , preparation

Figure 3. Reaction scheme for the preparation of amine-derivatized poly(ethylene terephthalate) (PET) surface (A) and chemical coupling of cyanuric chloride-activated PEO to amine-derivatized PET (B). (From reference 47).

Affmity separation, advantages for protein and peptide separation from biological broths and blood, 297 Aging, proteins, 247-248 Alkylene oxalate polymers, application, 202 Amine-derivatized poly(ethylene terephthal-ate), preparation, 139,141/... 

Sample preparation and derivatization methods for GC analysis of BAs have been also proposed. In a method developed by Daudt and Ough (1980), amines are distilled from the alkalized grape juice or wine sample and trapped in an acidified solution. After concentration under vacuum, methylamine, dimethylamine, ethylamine, diethylamine, n-propylamine, isobutylamine, a-amylamine, isoamylamine, pyrrolidine, and 2-phenethylamine in their salt form are derivatized with triflu-oroacetic (TFA) anhydride. TFA derivatives are extracted with ethyl ether and analyzed by GC-MS with a capillary fused silica poly( ethylene) glycol (PEG) column and the following oven temperature program 8 min at 70 °C, l°C/min to 160 °C, isotherm for 90 min. 

Lisboa et al. extensively exploited the possibilities of XPS analysis to study different graft polymer layers prepared by UV-induced free radical polymerization on poly (pyrrole) (PPy) films [9]. The aim was to prepare carboxylic acid or amine functionalized PPy for biomolecule immobilization. The contribution of the PPy carbon atoms in the Cls peak disappeared after a grafting time of 1200 s for acrylic acid and almost completely disappeared after 1500 s for allylamine, indicating that the PPy surface was completely covered with the graft polymer. For quantification of the amount of carboxylic acid and amine functionalities, a derivatization of the functional groups with trifluoroetha-nol and 4-trifluoromethylbenzaldehyde, respectively, was necessary. 

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