Polymer Based Composites with Interpenetrating Networks Structure

Abstract

Preparation and properties of composites consisting of two continuous interpenetrating phases, at least one of them is the polymer phase, are presented. Three different kinds of such composites are discussed: polymer-polymer (PVC-PMMA), polymer-mineral (PMMA-gypsum) and polymer-metal (PVC-Wood alloy). Composites were prepared by filling the porous matrix made of one component with other component in the liquid state which was then solidified by polymerization (PMMA) or cooling (Wood alloy). The obtained composites were characterized mainly by mechanical testing, e.g. elasticity modulus, flexural strength and Brinell hardness. In some cases other measurements, such as microscopic and electrical, were also carried out. It was found that obtained composites possess many interesting properties. The introduction of the second component into the matrix pores as a rule increases the mechanical properties by few times, even if its content is relatively small.

Formation of Elastomeric Composition Properties in the Presence of Bioingredient

“…It should be noted that polyamide with polyvinylpyrrolidone at its high concentration, most likely, can form an interpenetrating network. 22 Changes in the morphology and phase transitions of the researched polymers will obviously determine the performance properties of the developed materials. During mechanical tests under static loads, the main tensile strength can be determined by applying the stresselongation curve (tensile curve).…”

A review of conductive polymer composites filled with low melting point metal alloys

“…(b) Image of LMPA conductive filler and epoxy resin . (c) Scanning electron microscopy (SEM) image of metal phase after extraction of PVC . In this case, the metal was infiltrated into a sintered PVC sample.…”

“…Finally, Steller et al followed a composite preparation approach that was completely different from melt‐blending: they sintered polyvinyl chloride (PVC) in the form of a porous network, and then infiltrated LMPA into the pores under pressure in an autoclave. Different LMPA loadings were obtained by changing the porosity of the original sintered samples.…”

“…In Fig. c, we showed an SEM image from Steller et al where LMPA was infused into a porous PVC sample. This approach is guaranteed to give a percolating LMPA phase, and indeed these samples had a much higher conductivity than the PVC.…”