𝔖 Bobbio Scriptorium
✦   LIBER   ✦

ESR study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent—II. The effect of phenolic antioxidants

✍ Scribed by Takanori Yamazaki; Tadao Seguchi

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
317 KB
Volume
35
Category
Article
ISSN
0887-624X

No coin nor oath required. For personal study only.

✦ Synopsis

The effect of antioxidant on the reaction mechanism of chemical crosslinking of polyethylene (PE) with dicumyl peroxide (DCP) at high temperatures was investigated by electron spin resonance (ESR). The antioxidant reacts with the alkyl radicals in PE formed by the thermal decomposition of DCP above 120ЊC, and disturbs the crosslinking. A phenolic type antioxidant produced the phenoxy radical by the reaction with alkyl radicals formed in PE. It is suggested that the selection of a suitable antioxidant for PE crosslinking can be made by ESR analysis.

📜 SIMILAR VOLUMES

ESR study on chemical crosslinking react
ESR study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent
✍ Takanori Yamazaki; Tadao Seguchi 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 485 KB 👁 1 views

The reaction mechanisms of thermal crosslinking of polyethylene with dicumyl peroxide (DCP) at high temperatures were investigated by electron spin resonance (ESR). The crosslinking reactions were induced by the alkyl radicals formed by the thermal decomposition of DCP above 120"C. The kinetics of t

ESR study on chemical crosslinking react
ESR study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent. III. Effect of amine type antioxidants
✍ Takanori Yamazaki; Tadao Seguchi 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 409 KB 👁 1 views

The effect of antioxidant on the reaction mechanism of chemical crosslinking of polyethylene with dicumyl peroxide (DCP) at high temperatures was investigated by electron spin resonance (ESR). The crosslinking reactions were induced by the alkyl radicals in polyethylene (PE) formed by the thermal de

Electron spin resonance study on chemica
Electron spin resonance study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent. V. Comparison with polypropylene and ethylene-propylene copolymer
✍ T. Yamazaki; T. Seguchi 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB 👁 1 views

We studied the chemical reaction process of polypropylene (PP), ethylenepropylene copolymer (EPM), and ethylene-propylene-diene copolymer (EPDM) crosslinking induced by dicumyl peroxide (DCP) using electron spin resonance (ESR). Free radicals appeared at an elevated temperature of around 120 °C and