Kinetics of the thermal oxidation of poly(4-methyl-1-pentene)

The degradation of TPX components by oxygen, elevated temperature, and ionizing radiation

“…This mechanism is based on a series of chain reactions that involve the following free radicals: R, HO;, ROY, RO, and HO. It is noteworthy that the infrared data of Gabbay, Stivala, and Reich [6,7] are completely consistent with the earlier results obtained by Zitomer and DiEdwardo 121.…”

“…In another publication, Babbay, Stivala, and Reich discuss the thermal oxidative degradation of atactic and isotactic PMP powders in the presence of pure, dry oxygen at 145 and 175°C [6,7]. The formation of nonvolatile products (NVPs) were studied with infrared (IR) spectroscopy, while gas chromatography with mass spectroscopy (GCMS) was used to identify volatile products (VPs).…”

High-resolution thermogravimetry of poly(4-methyl-1-pentene)

“…It is known that, below 150°C, tertiary hydrogen on the tertiary carbons on the main chain is the major decomposition site. Above 150°C, the tertiary carbons on the pendant groups become reactive 16. If tertiary hydrogen is abstracted from the pendant groups, the carbon—carbon bond situated in the side groups will break down.…”

Standard Media for Particle Size and Number‐Density Calibrations in single, multiple and dependent scattering

“…The result is a solid scattering standard which is transparent except for very small brown zones which result from oxidation at the edges of the aforementioned four pieces. The reaction mechanisms by which the brown colour is produced via oxidation were discussed by Arnaud et al [34], Gabbay and Stivala [35], Griffith and Ranby [36] and Shlyupnikov et al [37]. The remaining oxidized zones are sufficiently localized not to be very troublesome.…”