Applications of Inorganic Polymeric Materials, III: Polyphosphazenes

Abstract

Polyphosphazenes form one of the most important and interesting classes of inorganic polymers having a backbone of alternating phosphorus and nitrogen atoms with phosphorus atom bearing two organic side groups. The most important feature of these polymers is the synthesis route which allows the side groups to be changed over a wide range to obtain a broad variety of products with different properties from elastomers to glasses, water soluble to hydrophobic polymers, bioinert to bioactive materials, and electrical insulators to conductors. In this paper, some novel applications of these polymers in biomedical materials and advanced devices are reviewed.

Influence of the length of side substituents on optical and electro-optical properties of polydialkoxyphosphazenes

“…Studies devoted to polydialkyloxyphosphazenes (PDAOPs) (R = -O-(CH 2 ) х -CH 3 ) indicate that their physical properties are dependent on the lengths of side substit uents [1,3,[4][5][6][7]. Some properties change monotoni cally with side chain lengthening, whereas the other properties remain unaffected.…”

“…Polyphosphazenes are currently used as elas tomers, membrane forming, photosensitive, and con ducting materials as well as biomedical polymers [1]. The attachment of side substituents of different chem ical structures to the backbone chain makes it possible to vary the functional properties of polyphosphazenes in a wide range and to produce materials with desired parameters on their basis.…”

“…The attachment of side substituents of different chem ical structures to the backbone chain makes it possible to vary the functional properties of polyphosphazenes in a wide range and to produce materials with desired parameters on their basis. A number of recent reviews and monographs attest to the fact that polyphosp hazenes are the focus of steadily increasing research and practical interest [1][2][3].…”

Synthesis and characterization of novel polyurethanes based on fluorine‐containing polyphosphazene

“…Polyphosphazenes (PPZs) are the inorganic polymers containing alternate phosphorus‐nitrogen single and double bonds with two organic side groups being attached to each phosphorus atom 1, 2. Fluorine‐containing polyphosphazenes (FPPZs) are perhaps the most important class of phosphazene macromolecules due to their structure variability, synthetic versatility, and wide range of properties 3–5.…”

Synthesis and Characterization of Novel Polyurethane Composites Based on Hybrid Inorganic/Organic Phosphazene‐Containing Microspheres

“…Among them, polyphosphazene are an important class of hybrid materials because they not only have a wide range of thermal and chemical stabilities, but also can provide improved flame‐retardant properties to reinforced polymers 5–7. The best known phosphazene materials are linear polymers with an alternating PN backbone;8 however, their main disadvantage, in further widening the application of linear polyphosphazenes, is their low yield and high cost. Other kinds of phosphazene materials, having long attracted attention, are cyclolinear and cyclomatrix phosphazenes.…”