What is polysulfone resin?
Udel® PSU (polysulfone) is a rigid, high-strength, semi-tough, transparent plastic that offers higher heat resistance and better hydrolytic stability than polycarbonate. It retains its good mechanical properties when exposed to steam and other sterilization techniques.
What is the density of polysulfone?
8.2. 2 Polysulfones Properties
|Water absorption at equilibrium||%||0.5|
|Glass transition temperature||°C||185|
What is the difference between polysulfone and polyethersulfone?
is that polyethersulfone is (chemistry) polyethersulfone describes a family of thermoplastic polymers that are known for their toughness and stability at high temperatures they contain the subunit aryl-so2-aryl, the defining feature of which is the sulfone group while polysulfone is (chemistry) any of a several classes …
What are the properties of polystyrene?
Polystyrene Characteristics Unmodified polystyrene is clear, rigid, brittle and moderately strong. Its electrical properties as a dielectric material are good, though it has relatively low heat resistance. Polystyrene is soluble in most chlorinated and aromatic solvents, though not in alcohols.
What is high-flux Dialyser?
A ‘high-flux’ dialyser has a membrane that allows middle-sized molecules to pass through but prevents the accidental removal of protein from the blood. One example of a ‘middle-molecule’ is beta 2 microglobulin (B2M) which can cause amyloidosis (see explanation at the end of this appendix).
What plastic is PES?
PES plastic is a high temperature engineering thermoplastic with outstanding tolerance to temperatures for long periods. PES polymer offers high mechanical strength and rigidity, coupled with relatively low notch sensitivity. In addition, polyethersulfone offers good chemical compatibility and hydrolysis resistance.
What are the advantages of polysulfone?
Polysulfone also has superior hydrolytic stability against hot water and steam sterilization. Polysulfone resists detergents and hydrocarbon oils well even at high temperatures under moderate stress levels.
What is the pH of polysulfone?
Polysulfone is highly resistant to mineral acids, alkali, and electrolytes, in pH ranging from 2 to 13. It is resistant to oxidizing agents (although PES will degrade over time ), therefore it can be cleaned by bleaches.
Polysulfone resins were introduced by Union Carbide Corporation in 1965 to produce stable and self–extinguishing thermoplastics. The polysulfones contain the sulfur atom in its highest excitation state, and hence are resistant to oxidation. The structure is as follows:
What solvents are polysulfones soluble in?
It is also stable in aqueous acids and bases and many non-polar solvents; however, it is soluble in dichloromethane and methylpyrrolidone. Polysulfones are counted among the high performance plastics.