Thermal oxidation of hydroxyl-terminated polybutadiene rubber I. Chemiluminescence studies

Total Luminescence Intensity as a Tool to Classify Degradable Polyethylene Films by Early Degradation Detection and Changes in Activation Energy

“…The sample is heated linearly in nitrogen and the resulting total luminescent intensity, TLI, is measured. It has been shown that the area under the curve of counts per second as a function of temperature, from the ramping analysis of pre-aged samples from the early stage of oxidation, can be related to the total amount of hydroperoxides in the sample after a given aging time. , The TLI method also makes it possible to follow changes in degradation activation energies.…”

Influences of thermal aging on properties and pyrolysis products of tire tread compound

“…Furthermore, the oxygen linkages could be partially occurred, leading to higher crosslink density and greater hardness. Similarly, Ahlblad et al [26] also found that thermal oxidation of hydroxyl-terminated polybutadiene rubber increased crosslink density. It is likely that thermal decomposition of polysulfidic bonds may proceed faster than the oxidation of the rubber chains [9].…”

A theoretical model for diffusion-limited oxidation applied to oxidation profiles monitored by chemiluminescence in hydroxy-terminated polybutadiene

“…9,10 The polymer sample was pressed between two glass plates so that the oxygen could only diffuse from the edges. Oxygen was removed from the sample for 2 h under vacuum, and the sample was then stored under nitrogen until analysis.…”

“…In particular, it has been shown recently that CL imaging can be successfully used to monitor the oxidation pro®les that are generated in the case of diffusionlimited oxidation of polymers. 9,10 Considering this previous work, we report in this paper the use of CL imaging to determine the shape of the oxidation pro®les obtained during the thermal ageing of hydroxy-terminated polybutadiene (HTPB) cured with isophorone diisocyanate (IPDI). The pro®les for various conditions of temperature and oxygen pressure are compared to theoretical pro®les derived from a diffusion-limited oxidation model.…”