Polysulfones

Abstract

Aromatic polysulfones are a family of polymers produced from the condensation polymerization of 4,4′‐dichlorodiphenylsulfone with one or more dihydric phenols. The three must commercially important polysulfones are bisphenol A based polysulfone (PSF), 4,4′‐dihydroxydiphenylsulfone‐based polyethersulfone (PES), and 4,4′‐dihydroxydiphenyl‐based polyphenylsulfone (PPSF). Polymers in this family are completely amorphous, exhibit high glass‐transition temperatures, and offer high strength and stiffness properties even at high temperatures, making them useful for demanding engineering applications. The polymers also possess good ductility and toughness and are transparent in their natural state by virtue of their fully amorphous nature. Additional key attributes include resistance to hydrolysis by hot water/steam and excellent resistance to acids and bases. The polysulfones are fully thermoplastic, allowing fabrication by most standard methods such as injection molding, extrusion, and thermoforming. They also enjoy a broad range of high temperature engineering uses. Some typical areas and industries where these polymers are used as materials of construction include hot food and beverage service, sterilizable medical components, hot water plumbing components, electrical/electronics, and a host of transportation uses in the automotive, rail, and aerospace industries.

γ-Alumina Modification with Long Chain Carboxylic Acid Surface Nanocrystals for Biocompatible Polysulfone Nanocomposites

“…Its excellent thermal and mechanical properties along with its high temperature hydrolytic resistance and its biocompatibility, 24,25 make this polymer suitable for highperformance medical devices that require high temperature sterilization. 26,27 This polymer is currently used for brackets production but erosion induced by mastication may reduce its in-service life; thus, an increase of its strength is currently desired and may be achieved by dispersion of hard ceramic oxides, such as γ-alumina.…”

New thermoplastic poly(thiourethane-urethane) elastomers based on hexane-1,6-diyl diisocyanate (HDI)

“…Poly(thiourethane)s, poly(thioester)s and poly(thiocarbonate)s have been synthesized and investigated mainly as potential plastics with high thermal and chemical resistance, as well as with high refractive index for optical applications (i.e., lenses and optical fibers) [1,[4][5][6][7].…”

Synthesis and Characterization of Polysulfone-based Graft Copolymer Possessing Quaternary Ammonium Salts via Photoiniferter Polymerization

“…Polysulfones (PSU) are the family of thermoplastics that have excellent thermal and chemical stability, high radiation degradation resistance, transparency, high rigidity, mechanical strength, and good electrical and film properties (1,2). To benefit from above-mentioned advantages, they have been used in many applications such as medical devices (hemodialysis), food processing, feeding systems, automotive, electronics, water distillation, gas separation, and fuel cells (3)(4)(5).…”