Frontier EGA/PY-3030D, Руководство по эксплуатации

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CHAPTER 1 ABOUT MULTI-SHOT PYROLYER
1.1 BACKGROUND OF DEVELOPMENT
Pyrolysis gas chromatography (Py-GC) can be used to characterize most materials including
insoluble materials and complex materials at trace levels often without any pretreatment of the
samples. Unique information about the sample, which is unobtainable by other analytical techniques,
makes Py-GC techniques essential in virtually every type of laboratory. Historically, data obtained
using Py-GC has suffered from poor reproducibility and poor recoveries of reactive compounds.
Frontier Laboratories has overcome these shortcomings by designing a system based on a technique
developed by Emeritus Professor Shin Tsuge of Nagoya University. Professor
Tsuge’s technique
utilizes a small cup. Sample is placed in the cup which then free-falls into a micro furnace. The
sample temperature goes from ambient to the pyrolysis (i.e., furnace) temperature in several tens of
milliseconds. This system features precise temperature control and minimal condensation of
pyrolyzates in the system. In 1992, Frontier Laboratories commercialized the Double-Shot pyrolyzer.
The Double-Shot pyrolyzer added a completely new dimension to polymer analysis. For the first time
the volatile compounds and pyrolyzates originating from a polymer could be analyzed separately.
The Double-Shot pyrolyzer features a temperature programmable furnace which can be used to
perform Evolved Gas Analysis (EGA). With this technique, volatiles and pyrolyzate gasses from a
polymeric sample evolve continuously as the sample is heated. A plot of sample temperature vs.
detector response is termed as an EGA thermogram. EGA is similar to thermal gravimetric analysis
(TGA). EGA is currently used in many research laboratories for the detailed determination of the
thermal and chemical behavior of polymers, and also in production facilities as a quality control
method.
Frontier Laboratories also offers a number of Ultra ALLOY
®
metal capillary columns. They provide
contamination resistance about four times greater and thermal stability 50ºC higher than columns
made using fused silica tubing. They are ideally suited for the analysis of pyrolyzates ranging from C
1
to over C
100
.
Our research and development team has devoted years of basic research to improve the quality of
the Double-Shot pyrolyzer and has developed and commercialized a variety of peripheral devices.
These have greatly expanded the application areas of the Double-Shot pyrolyzer.
Over the past 20 years, a variety of high performance polymeric materials have appeared in the
market which has generated a demand for a quantitative technique to characterize these materials.
In particular, the thermal decomposition behaviors of the materials at high temperatures are of
considerable interest. The sheer number of new formulations and additive packages has increased