✦ LIBER ✦

Monitoring of degradation in thermally aged nylon 6,6. I. UV-visible absorption spectrophotometry

✍ Scribed by Clifford L. Renschler; Frank B. Burns

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 412 KB
Volume: 29
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1984.070290409

No coin nor oath required. For personal study only.

✦ Synopsis

The absorbance of chromophores developed upon thermal aging of a typical nylon 6,6 yarn is investigated. The absorbance is found to correlate with the degree of tensile strength loss suffered by the yarn during the aging process. The measurement is shown to be quite sensitive, as the absorbance from samples with levels of strength loss as low as 5% has been monitored. It is predicted that similar samples with only 1-2% tensile strength loss should be distinguishable from control samples using this technique. Implications for the monitoring of aging a t ambient temperatures are discussed.

📜 SIMILAR VOLUMES

Monitoring of degradation of thermally a

Monitoring of degradation of thermally aged nylon 6,6. II. Pyrolysis–gas chromatography

✍ Frank B. Burns; Clifford L. Renschler 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 320 KB 👁 2 views

Pyrolysis-gas chromatography was used as an analytical method to evaluate the extent of chemical changes that occur in aged yarns and to demonstrate any correlation between measured physical properties and pyrolysis products. Nylon 6,6 yarn samples (2.5-3.0 mg) that were control-degraded as a functi