Adsorption and decomposition of diacylic peroxides on the surfaces of dispersed oxides

Abstract

The adsorption of oligo(sebacoyl peroxide) on Aerosil and MgO and benzoyl peroxide on Fe 2 O 3 , Cr 2 O 3 , and V 2 O 5 has been studied. It has been established that peroxide adsorption on the considered adsor bents is described by the Langmuir equation. Benzoyl peroxide adsorption increases in the series Fe 2 O 3 < Cr 2 O 3 < V 2 O 5 . The process of thermal decomposition of peroxides in the presence of the listed adsorbents has been studied. The overall reaction of peroxide decomposition comprises two components, i.e., the decompo sition processes occurring in a solution and on an adsorbent surface. Kinetic and activation parameters of the thermal decomposition reactions in the solutions and on the surfaces have been determined.

Preparation of Polymer-Mineral Nanocomposites Based on Vinyl Monomers and Dispersed Inorganic Oxides

“…With this method, the formation of a polymer matrix is realized during monomer polymerization in the presence of dispersive mineral filler [7]. The highly developed surface of the mineral filler affects the parameters of the polymerization process due to the adsorption of the monomer and the peroxide radical initiator [8]. This surface can change the molecular masses and the molecular weight distribution of the polymer formed under these conditions.…”

Recipe and Technological Factors’ Influence on Vibrocentrifuged Basalt Fiber Concrete Strength and Deformation Properties

“…The largest aggregate grains are located at the outer surface of the product, and those that are smaller are located closer to the inner surface. This uneven distribution of aggregate grains over the product thickness is the main distinguishing feature of centrifuged concrete in comparison with vibrated concrete [9][10][11].…”