The influence of the nature of the chemical reaction on the structure and properties of blends in the reactive blending of polymers

Abstract

We experimentally demonstrated angular selectivity in a nondestructive readout of a photochromic protein bacteriorhodopsin (bR). bR is a photochromic material which has many unique properties. Especially, its high spatial resolutional recording ability is suitable for holographic applications. From the viewpoint of latching, it is desirable to preserve a hologram after readout. The experimental result shows a weak angular selectivity in a volume hologram on bR.

The current state of the art in materials science of organosilicate composites

“…Polyorganosiloxanes and resins can be blended in a mechanical way and by reactive mixing of components when physical and (or) chemical interactions occur between molecules of dissimilar mixture components [36]. As a rule, the characteristics of materials prepared by reactive mixing are better than those produced by physical mixing.…”

Structure and properties of polyamide 6 blends with low‐density polyethylene grafted by itaconic acid and with neutralized carboxyl groups

“…In this connection, POs are subjected to grafting of monomers containing polar functional groups, 3 or by adding certain compatibilizers, which most often are modified polyolefins or copolymers. 2,5,6 The introduction of a grafted PO or a compatibilizer, on their basis, in a blend of incompatible polymers is accompanied by stronger interfacial adhesion, decreased surface tension between the phases, and, as a result, better compatibility of components, easier filling of molds at processing, and higher mechanical properties.…”

“…2 It is usually believed that the reactivity of a functional group is independent of the size of the molecule to which it belongs, although steric barriers caused by chain structure of molecules, as a rule, reduce the reactivity to some degree. 2,5 Therefore, to ensure effective compatibilization of the blend, grafted PO must contain particular functional groups, which could provide for high rate and selectivity of interfacial reactions over the given processing conditions under which a blend is prepared. It is the key problem of selecting a properly grafted PO for a particular blend.…”

Interfacial strengthening of high-impact polypropylene compounds by reactive modification

“…Based on the nature of the chemical reaction taking place, three main groups of reactively modified multiphase systems can be identified [14]:…”