Chapter 3: Structural Diversity in Fluorinated Polyphosphazenes: Exploring the Change from Crystalline Thermoplastics to High-performance Elastomers and Other New Materials

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Abstract

Fluorine-containing polyorganophosphazenes, (NPRF2)n, constitute one of the largest and best developed areas of inorganic-organic polymer chemistry. Linear high polymers in this class are fire resistant, hydrophobic, fiber-, film- and elastomer-forming materials that, in many cases, have property combinations that cannot be matched by conventional fluorocarbon or non-fluorinated polymers. Most macromolecules of this type are synthesized by using the alkali metal salts of fluoroalcohols or fluorophenols for chlorine-replacement reactions with poly(dichlorophosphazene). This approach allows the synthesis of polymers with only one type of fluorinated side-group, mixed-substituent polymers or block copolymers. Single-substituent polymers in this series generate either semicrystalline or amorphous materials, depending on the length and flexibility of the side-chains. Mixed-substituent polymers are usually amorphous materials that can be covalently crosslinked to generate elastomers. In addition, elastomers have been produced by the incorporation of small percentages of rigid bulky side-groups that favor side-chain interdigitation, a process that leads to physical crosslinking. Finally, fluorophosphazene elastomers are accessible by the incorporation of organosilicon side-groups and by the formation of polyphosphazene-polyorganosilicon block copolymers.

Original languageEnglish (US)
Title of host publicationFluorinated Polymers, Volume 1
Subtitle of host publicationSynthesis, Properties, Processing and Simulation
EditorsBen Zhong Tang, Bruno Ameduri, Hideo Sawada
PublisherRoyal Society of Chemistry
Pages54-79
Number of pages26
Edition24
ISBN (Electronic)9781782620341, 9781782624134, 9781782624158, 9781782625759, 9781782629160
DOIs
StatePublished - Jan 1 2017

Publication series

NameRSC Polymer Chemistry Series
Number24
Volume2017-January
ISSN (Print)2044-0790
ISSN (Electronic)2044-0804

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biomaterials
  • Polymers and Plastics

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