|About this Abstract
||Materials Science & Technology 2019
||Failure Analysis: Industry Specific Failures
||Carbonyl Index Depth Profiling via Micro FTIR and FPA Detection
||Jason Babcock, Mark Weiss, Donald Duvall, Dale B. Edwards, Andy Shah
|On-Site Speaker (Planned)
Polyolefin pipe is used in a wide variety of gas and liquid plumbing installations. As a means of measuring potential polyolefin oxidation, FTIR using ATR is often utilized due to the simplicity of analysis and wide distribution of these instruments in the failure analysis community. FTIR can be used to determine the carbonyl ratio, which is an indication of the degree of oxidation. But detecting carbonyl peaks via ATR is not a good representation of the depth of oxidation and overall pipe crack resistance since the method only collects data from the first few microns of material adjacent to the ATR crystal. Herein we will demonstrate how more advance methods using micro-FTIR and FTIR with a focal plane array detector are superior for characterizing the depth of polyolefin oxidation in the pipe wall and the effect on critical polymer properties.