Interaction kinetics of peroxides and organic sulphides in atactic polypropylene

✍ Scribed by Yu.A. Shlyapnikov; N.N. Kolesnikova

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 365 KB
• Volume: 23
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(87)90010-3

✦ Synopsis

Kinetics of the reactions between benzoyl peroxide and sulphides (dilaurylthyodipropionate and dibenzyl sulphide), of the reaction between diphenylethyl hydroperoxide and dibenzylsulphide in atactic polypropylene and of the reaction of benzoyl peroxide with dibenzyl sulphide in polyisobutylene have been studied. The stoichiometry of the reactions was determined and the dependence of the rate constants on the initial concentration of reactant was established. At low reactant concentrations, the rate constants decrease and at high concentration increase with increasing concentration. In model lowmolecular-weight hydrocarbon, the reaction rate constants do not change with reactant concentrations. The reaction mechanism is discussed. It is based on specific features of the dissolution of low-molecular additives in polymer.