Polysulfone PSU

Comparative testing has revealed that the mechanical properties of PSU and PES at temperatures over 140 °C are far superior to those of PPS and PC for example. 

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Other Polymers. Besides polycarbonates, poly(methyl methacrylate)s, cycfic polyolefins, and uv-curable cross-linked polymers, a host of other polymers have been examined for their suitabiUty as substrate materials for optical data storage, preferably compact disks, in the last years. These polymers have not gained commercial importance polystyrene (PS), poly(vinyl chloride) (PVC), cellulose acetobutyrate (CAB), bis(diallylpolycarbonate) (BDPC), poly(ethylene terephthalate) (PET), styrene—acrylonitrile copolymers (SAN), poly(vinyl acetate) (PVAC), and for substrates with high resistance to heat softening, polysulfones (PSU) and polyimides (PI). 

A number of amorphous thermoplastics are presently employed as matrices in long fiber composites, including polyethersulfone (PES), polysulfone (PSU), and polyetherimide (PEI). AH offer superior resistance to impact loading and higher interlaminar fracture toughnesses than do most epoxies. However, the amorphous nature of such polymers results in a lower solvent resistance, clearly a limitation if composites based on such polymers are to be used in aggressive environments. 

Polysulfones (PSU) and polyphenylsulfones (PPSU) can be modified by alloying with ABS, PBT, PC or proprietary polymers. The main sought-after characteristics are lower cost and easier processing, combined with a good balance of mechanical, thermal and chemical properties. 

Speciality thermoplastics polysulfone (PSU), PPS, fluoroplastics, PEEK, PEI, polyamide imide (PAI), liquid crystal polymers (LCP). 

Polysulfone (PSU) Aqueous samples esp. biological sera and fluids low protein binding... 

Figure 180 The range (Ze) of electrons (right ordinate) and the recombination probability [P ] for electrons (left ordinate). A comparison between the theoretical predictions according to Eqs. (153) and (328) (lines) and experiment (data points) shows good agreement for the electron mobility jie = 3.3 x 10-8 cm2/V s (a). Schematic cross-section of the EL device and monitoring of emission from two different emitters (PSu + TSA)—a blend of polysulfone (PSu) and tris(stilbene)amine(TSA), and PPV-poly(phenylenevinylene). Their thicknesses (dly d2) are subject to variation, d0 is the quenching zone of excitations by the Ca cathode (b). Adapted from Ref. 344.

Figure 8.30 results from a DIA analysis of the melt mixed PA/polysulfone (PSU) (non-reactive) and PA/PSU-MA (reactive) systems [Sigalov et al., 1997]. The data points are for the non-reactive system. As expected, the data points are scattered above a declined lower boundary (shown by solid line). The upper boundary may appear most likely due to the breakup of very elongated particles. A perfectly spherical shape may only be reached asymptotically, after an infinitely long time. Since... 

UF membranes are usually prepared by phase inversion. The most widely used polymer for the preparation of UF membranes is polysulfone (PSU) or polyethersulfone (PES). 

The engineering polymers that have already reached maturity consist of the Nylons (PA), polycarbonate (PC), acetal (POM), polyesters (PBT and PET) and Noryl (PPO). Their relative price is aroxmd 3. Including very novel polymers, a prestigious high priced group consists of the advanced engineering polymers (high performance) polysulfone (PSU), polyphenylene-sulfide (PPS), fluoroethylenes (PTFE and its derivatives), polyamide-imide (PAI), polyether-imide (PEI), polyethersulfone (PES), polyether-ether-ketone (PEEK), aromatic polyesters and polyamides, polyarylates and liquid-crystal-polymers (LCP). 

Polysulfones (PSU) This novel engineering polymer was developed in 1965 and has the following structure, specific mass = 1.24 ... 

Ternary composites of PBI with sPEK + polysulfone (PSU) [437], sPEEK + sulfonated PSU (sPSU) [438], and sPEEK + zirconium phosphate [439] were studied in DMFC. Excellent results were reported for DMFC, at 110 °C, using the first two composite membranes. 

Typical plastics, including polymethylmethacrylate (PMMA), polycarbonate (PC), cyclic olefin copolymer (COC), polysulfone (PSU), polyetheretherketone (PEEK), liquid crystal polymers (LCP), polystyrene(PS), polyethylene terephthalate (PET), etc., have been used for microfluidics. COC is the most commonly used polymer, accounting for around 80 % of all applications, because of its good optical properties [2]. 

The morphology of the surface of the polysulfone PSU and the composites PSU/Ag was examined with the use of scanning electron microscope (SEM) Jeol JSM 5400, with a unit for the chemical analysis in micro-areas EDS (Link ISIS series 300) in the secondary electron detection system (SE). 

TABLE 1 Antibacterial efficacy of polysulfone (PSU) and its composites (PSU/Ag) against S. aureus and E. coli standard strains. 

Ultrason E Polyethersulfone (PESU) Ultrason S Polysulfone (PSU). BASE 2006. 

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