Estimation of kinetic parameters during Teflon degradation from linearized differential TGA traces

✍ Scribed by Leo Reich

• Publisher: John Wiley and Sons
• Year: 1967
• Tongue: English
• Weight: 189 KB
• Volume: 11
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1967.070110507

✦ Synopsis

In a recent communication,' mathematical expressions were derived for obtaining kinetic parameters during polymer pyrolyses from linearized DTA traces. The approximate method developed is now extended to differential TGA traces in this paper and is applied to polytetrafluorethylene (Teflon). The results obtained are compared with those obtained from more elaborate procedures.

Experimental

To a thermogravimetric apparatus (TGA) (Aminco Thermograv) was attached a differentiator which was designed and constructed in these laboratories.2.a Teflon samples (DuPont) of 200 mg. were used. TGA and differential TGA traces (DTGA) were obtained simultaneously.