What is polysulfone used for?

Polysulfone allows easy manufacturing of membranes, with reproducible properties and controllable size of pores down to 40 nanometers. Such membranes can be used in applications like hemodialysis, waste water recovery, food and beverage processing, and gas separation.

What is another name for polysulfone?

Polysulfones, also called polyaryl sulfones, are a class of engineering polymers with high thermal, oxidative and hydrolytic stabilitiy. They are amorphous, transparent thermoplastics that can be molded, extruded, or thermoformed into a wide variety of shapes.

Is polysulfone an ultrafiltration membrane?

Introduction. Since polysulfone (PS) ultrafiltration (UF) membranes have high mechanical property, good heat-aging resistance, and chemical stability, they have been widely used in such diverse fields as water treatment, food processing, and biotechnology [1], [2].

How do you prepare a polysulfone membrane?

Most polysulfone membranes are prepared by the phase inversion method as other polymer membranes. To begin the membrane forming process, the researchers dissolve the polymer in the solvent or in an organic solvent mixture.

Is polysulfone a thermoplastic?

Polymeric Materials and Properties PSU is produced from bisphenol A and 4,4-dichlorodiphenylsulfone by a nucleophilic process. PSU is an amorphous engineering thermoplastic material with exceptionally high temperature resistance and high rigidity; it is transparent and dimensionally stable.

What is sulfone polymer?

Sulfone polymers are high-performance thermoplastics that have –SO2– or sulfone moiety linkages. They are high-heat amorphous thermoplastics that offer more toughness, strength, and hydrolytic stability than other transparent plastics.

What is polysulfone dialyzer?

Summary: Polysulfone (PS) membranes with polyvinylpyrrolidone (PVP) as a hydrophilic agent are widely used in dialysis, but blood components adhere to the membrane surface. We developed a new dialyzer, NV, by localizing a new hydrophilic polymer onto the inner surface of a hollow-fiber membrane composed of PS and PVP.

What is PSF polymer?

Polymer Properties Database Polysulfone (PSF, PSU) is an amorphous, transparent, and pale amber high-performance thermoplastic produced by nucleophilic aromatic substitution between dichlorodiphenyl sulfone and disodium salt of bisphenol A with elimination of sodium chloride.

Is polysulfone a polymer?

Polysulfones are transparent, amorphous polymers with high strength and high heat resistance. Their glass transition temperatures range from 180 to 250 °C. They are hydrolytically stable and (along with their heat resistance) are very stable to repeated cycles of steam sterilization.

What is the monomer of polysulfone?

polysulfone, any of a class of resinous organic chemical compounds belonging to the family of polymers in which the main structural chain most commonly consists of benzene rings linked together by sulfonyl (―SO2―), ether (―O―), and isopropylidene (―C(CH3)2―) groups.

What kind of applications can polysulfone membranes be used for?

Polysulfone allows easy manufacturing of membranes, with reproducible properties and controllable size of pores down to 40 nanometres. Such membranes can be used in applications like hemodialysis, waste water recovery, food and beverage processing, and gas separation.

What are the properties of a polysulfone polymer?

Polysulfones are transparent, amorphous polymers with high strength and high heat resistance. Their glass transition temperatures range from 180 to 250 °C. They are hydrolytically stable and (along with their heat resistance) are very stable to repeated cycles of steam sterilization.

How are poly sulfone membranes modified to reduce protein adsorption?

Poly(ether)sulfone membranes are often surface modified with various proprietary chemistries to reduce protein adsorption and membrane fouling by increasing hydrophilicity and reducing membrane charge.

Which is better, polycarbonate or Udel polysulfone?

Udel® PSU (polysulfone) is a rigid, high-strength, semi-tough, transparent plastic that offers higher heat resistance and better hydrolytic stability than polycarbonate.