Polysulfones poly

Engineering resins can be combined with either other engineering resins or commodity resins. Some commercially successhil blends of engineering resins with other engineering resins include poly(butylene terephthalate)—poly(ethylene terephthalate), polycarbonate—poly(butylene terephthalate), polycarbonate—poly(ethylene terephthalate), polysulfone—poly (ethylene terephthalate), and poly(phenylene oxide)—nylon. Commercial blends of engineering resins with other resins include modified poly(butylene terephthalate), polycarbonate—ABS, polycarbonate—styrene maleic anhydride, poly(phenylene oxide)—polystyrene, and nylon—polyethylene. [Pg.277]

Similar to the synthesis of polysulfones, poly(arylene ether ketone)s can also be prepared by using either AA and BB monomers or an AB monomer. [Pg.332]

Direct fluorination of polymer or polymer membrane surfaces creates a thin layer of partially fluorinated material on the polymer surface. This procedure dramatically changes the permeation rate of gas molecules through polymers. Several publications in collaboration with Professor D. R. Paul62-66 have investigated the gas permeabilities of surface fluorination of low-density polyethylene, polysulfone, poly(4-methyl-1 -pentene), and poly(phenylene oxide) membranes. [Pg.219]

These types of separators consist of a solid matrix and a liquid phase, which is retained in the microporous structure by capillary forces. To be effective for batteries, the liquid in the microporous separator, which generally contains an organic phase, must be insoluble in the electrolyte, chemically stable, and still provide adequate ionic conductivity. Several types of polymers, such as polypropylene, polysulfone, poly(tetrafluoroethylene), and cellulose acetate, have been used for porous substrates for supported-liquid membranes. The PVdF coated polyolefin-based microporous membranes used in gel—polymer lithium-ion battery fall into this category. Gel polymer... [Pg.184]

Amorphous polymers are characterized by the following properties They are transparent and very often soluble in common organic solvents at room temperature. The following amorphous polymers have gained industrial importance as thermoplastic materials polyfvinyl chloride), polystyrene, polyfmethyl methacrylate), ABS-polymers, polycarbonate, cycloolefine copolymers, polysulfone, poly( ether sulfone), polyfether imide). [Pg.24]

Koops et al. [39] investigated the pervaporation selectivity as a function of membrane thickness for the polysulfone, poly(vinyl chloride) and poly(acrylonitrile) membranes in the dehydration of acetic acid and reported that selectivity decreases with decreasing membrane thickness, below a limiting value of about 15 pm. [Pg.53]

Most of today s ultrafiltration membranes are made by variations of the Loeb-Sourirajan process. A limited number of materials are used, primarily polyacrylonitrile, poly(vinyl chloride)-polyacrylonitrile copolymers, polysulfone, poly(ether sulfone), poly(vinylidene fluoride), some aromatic polyamides, and cellulose acetate. In general, the more hydrophilic membranes are more fouling-resistant than the completely hydrophobic materials. For this reason water-soluble... [Pg.253]

L.M. Robeson, A. Noshay, M. Matzner and C.N. Merian, Physical Property Characteristics of Polysulfone/poly(dimethyl siloxane) Block Copolymers, Angew. Makro-mol. Chem. 29, 47 (1973). [Pg.352]

PB PBI PBMA PBO PBT(H) PBTP PC PCHMA PCTFE PDAP PDMS PE PEHD PELD PEMD PEC PEEK PEG PEI PEK PEN PEO PES PET PF PI PIB PMA PMMA PMI PMP POB POM PP PPE PPP PPPE PPQ PPS PPSU PS PSU PTFE PTMT PU PUR Poly(n.butylene) Poly(benzimidazole) Poly(n.butyl methacrylate) Poly(benzoxazole) Poly(benzthiazole) Poly(butylene glycol terephthalate) Polycarbonate Poly(cyclohexyl methacrylate) Poly(chloro-trifluoro ethylene) Poly(diallyl phthalate) Poly(dimethyl siloxane) Polyethylene High density polyethylene Low density polyethylene Medium density polyethylene Chlorinated polyethylene Poly-ether-ether ketone poly(ethylene glycol) Poly-ether-imide Poly-ether ketone Poly(ethylene-2,6-naphthalene dicarboxylate) Poly(ethylene oxide) Poly-ether sulfone Poly(ethylene terephthalate) Phenol formaldehyde resin Polyimide Polyisobutylene Poly(methyl acrylate) Poly(methyl methacrylate) Poly(methacryl imide) Poly(methylpentene) Poly(hydroxy-benzoate) Polyoxymethylene = polyacetal = polyformaldehyde Polypropylene Poly (2,6-dimethyl-l,4-phenylene ether) = Poly(phenylene oxide) Polyp araphenylene Poly(2,6-diphenyl-l,4-phenylene ether) Poly(phenyl quinoxaline) Polyphenylene sulfide, polysulfide Polyphenylene sulfone Polystyrene Polysulfone Poly(tetrafluoroethylene) Poly(tetramethylene terephthalate) Polyurethane Polyurethane rubber... [Pg.939]

Impact Modification of Polysulfone with Polysulfone/Poly(dimethylsiloxane) Block Copolymers... [Pg.305]

The synthesis of polysulfone/poly(dimethylsiloxane) block copolymers was reported earlier (4, 5). Blends of the block copolymer with... [Pg.306]

Figure 1. Synthesis of polysulfone-poly(dimethylsiloxane) block copolymers...

Examples of copolymers with practical use between two different carbonates are poly[2,2-propanebis(4-phenyl)carbonate]-Woc/c-poly[2,2-propanebis[4-(2,6-dimethylphenyl)]carbonate], poly [1,1-cyclohexane bis(4-phenyl)carbonate]-co-[2,2-propane bis(4-phenyl)carbonate], and poly [1,1-dichloroethylene bis(4-phenyl)carbonate]-co-[2,2-propane bis(4-phenyl)carbonate]. Examples of copolymers between a carbonate and an ester are poly[4,4 -(1-methylethylidene)bis[phenol]-co-1,3-benzenedicarboxylic acid-co-carbonic acid], poly[4,4 -(1-methylethylidene)bis[phenol]-co-1,4-benzenedicarboxylic acid-co-carbonic acid], etc. Other known copolymers include poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/(-poly(ethylene oxide), poly[2,2-propanebis(4-phenyl)carbonate]-Woc/c-polysulfone, poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/c-poly(dimethylsiloxane), poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/c-poly(methyl methacrylate), etc. These copolymers have in general good thermal resilience and decompose similarly to other polycarbonates [23]. [Pg.566]

Polysulfone = Poly(oxy l,4 phenylenesulfonyl l,4 phenyleneoxy l,4 phenyleneisopropylidene l,4 phenylene) Polyarylate = Poly(oxyterephthaloyl/isophthaloyl T/I=50/50)oxy l,4 phenyleneisopropylidene l,4 phenylene... [Pg.2204]

But of prime importance with regard to the final separation process is the nature of the membrane-forming polymer its hydrophihdty, charge density, polymer structure and molecular weight Typical polymers used in this phase-separation process are cellulose esters (most commonly CA), polyamides, poly(amide-hydra-zides), polyimides, (sulfonated) polysulfones, poly(phenylene oxide) and (sulfona-ted) poly(phthalazine ether sulfone ketone). [Pg.260]

Polysulfones are a family of engineering thermoplastics with excellent high-temperature properties. The simplest aromatic polysulfone, poly(p-phenylene sulfone)... [Pg.514]

Udel Polysulfone Poly(bisphenol A sulfone) Solvay... [Pg.296]

Cho, Y. H., Kim, H. W., Nam, S. Y, and Rark, H. B. 2011. Eouhng-tolerant polysulfone-poly(ethylene oxide) random copolymer ultrafiltration membranes. Journal of Membrane Science 379 296-306. [Pg.30]

L.M. Robeson, A. Noshay, M. Matz-NER, C. N. Merriam, Physical property characteristics of polysulfone/poly(di-methylsiloxane) block copolymers. An-geiv. Makromol. Chemie 29/30 (1973) 47. [Pg.89]

Polymeric materials for MF membranes cover a very wide range, from relatively hydrophilic to very hydrophobic materials. Typical hydrophilic materials are polysulfone, poly(ether sulfone), cellulose (CE) and ceUiflose acetate, polyamide, polyimide, poly(etherimide) and polycarbonate (PC). Typical hydrophobic materials are polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE, Teflon) and poly(vinylidene fluoride). [Pg.13]

Membranes for vapor removal from air have a structure similar to the Prism membrane, but they are prepared on a different principle [22]. Aromatic poly(etherimide) is used to produce a porous substrate membrane by the dry-wet phase inversion method. This polymer was chosen over polysulfone/poly(ether sul-... [Pg.14]

The majority of the structures is prepared from AB2 monomers by polycondensation, to result in hb polyesters, polyamides, polyethers, poly(ester amide)s, polysulfones, poly(ether ketone)s, polyphenylenes (among others), and increasingly also by polyaddition leading to, for example, poly(carbosilane)s, poly(urea urethane)s, polyarylenes, poly(ether amide)s or polythioethers, and many others [6-11, 13, 17, 21]. In particular, cycloaddition reactions offer the advantage of an often very selective and clean, high-yield reaction that is not influenced by special functionalities [33]. The relatively easy synthesis of the hb polyphenylenes described by Mullen et al. [34]. is an excellent example of this. In addition, certain cycloaddition reactions form as Hnear units nonstable intermediates, which allows the preparation of hb polymers without any linear units, which therefore exhibit formally a DB of 100% [35]. [Pg.704]

In the search for PEMs with lower alcohol permeability than Nafion and other perfuorinated membranes, without degradation of the proton conductivity, a number of new polymeric membranes were synthetized and characterized, such as sulfonated polyimides, poly(arylene ether)s, polysulfones, poly(vinyl alcohol), polystyrenes, and acid-doped polybenzimidazoles. A comprehensive discussion of the properties of these alternative membranes is given in Chap. 6, along with those of Nafion and Nafion composites. [Pg.22]

Flat-sheet asymmetric-skinned membranes made from synthetic polymers (also copolymers and blends), track-etched polymer membranes, inorganic membranes with inorganic porous supports and inorganic colloids such as Zr02 or alumina with appropriate binders, and melt-spun thermal inversion membranes (e.g., hollow-fiber membranes) are in current use. The great majority of analytically important UF membranes belong to the first type. They are usually made of polycarbonate, cellulose (esters), polyamide, polysulfone, poly(ethylene terephtha-late), etc. [Pg.2981]

Membrane polymers include polypropylene, poly (vinylidene difiuoride), polysulfone, poly(ether sulfone), poly(ether ether ketone), polyvinyl alcohol, polyacrylonitrile, polycarbonate, and poly(ethylene terephthalate). [Pg.220]