Analysis of Rubber by Evolved Gas Analysis Method

Introduction

Pyrolysis GC or GC/MS methods (Pyr-GC or GC/MS), that are widely used to analyze polymers include instantaneous thermal decomposition (single-shot method) and thermal desorption. The former provides information about the polymers and the latter provides information about additives, etc. It is important for both methods, that the temperature be set to a level that provides the most useful information, where evolved gas analysis is also an efficient method for determining these temperature settings. This method consecutively heats the sample and directly detects the gas that is generated (Evolved Gas Analysis: EGA). It is possible to learn the gas generation status over a wide range of temperatures. In this application note rubber was analyzed using the EGA method and the thermal desorption method.

August 26, 2004 GMT