Analysis of Pressure Sensitive Adhesives by GC/MS and GC/AED with Temperature Programmable Pyrolyzer

Abstract

Gas chromatograph/mass spectrometer (GC/MS) and gas chromatograph/atomic emission detector (GC/AED) with temperature programmable pyrolyzer were used for analysis of pressure sensitive adhesives in adhesive tapes. Evolved gas analysis (EGA) profile of the adhesives was obtained by this temperature-programmed pyrolyzer directly coupled with MS via a deactivated metal capillary tube. The EGA profile suggested the optimal thermal desorption condition for additives and the subsequent optimal pyrolysis temperature for the remaining polymeric material. Rubbers were identified from pyrograms with the assistance of a new polymer library. The additives were selectively detected by monitoring hetero elements and these screening results of GC/AED enabled one to easily find additive peaks in complex chromatograms of GC/MS with interference of tackifier. The additives were able to be identified by the corresponding GC/MS data. Furthermore, the EGA profile gave significant data for crosslinking agents by using specific ion monitoring.