Poly phthalazinon ether sulfone

Figure 31. Synthesis of directly polymerized sulfonated poly(phthalazinone ether sulfone) ...

Poly(phthalazinone ether sulfone ketone) PPESK... [Pg.238]

The majority of polymer membranes used for microfiltration and ultrafiltration of liquids are prepared by the wet phase inversion process. Such membranes exhibit a typical asymmetric structure characterized by a thin dense surface layer and a thick microporous bulk. Poly(phthalazinone ether sulfone ketone) (PPESK) copolymers, c.f. Figure 7.10, show glass transition temperatures in the range of 263-305°C. The polymers show an outstanding chemical stability. They are soluble only in 98% H2SO4. Concentrated aqueous solutions of sodium chlorate, hydrogen peroxide, acetic acid, and nitric acid show no effect. ... [Pg.258]

Y. Dai, X. Jian, S. Zhang, and M. D. Guiver. Thermostable ultrafiltration and nanoflltration membranes from sulfonated poly(phthalazinone ether sulfone ketone). J. Membr. ScL, 188(2) 195-203, July 2001. [Pg.277]

B. Zhang, T. Wang, S. Zhang, J. Qiu, and X. Jian. Preparation and characterization of carbon membranes made from poly(phthalazinone ether sulfone ketone). Carbon, 44(13) 2764-2769, November 2006. [Pg.278]

M. Li, H. Zhang, and Z.-G. Shao. Quatemized poly(phthalazinone ether sulfone ketone) membrane doped with H3PO4 for high-temperature PEMFC operation. Electrochem. Solid-State Lett., 9 A60-A63, 2006. [Pg.279]

PAN, polyacrylonitrile PP, polypropylene PPSU, polyphenylsulfone PPBES, copoly(phthalazinone biphenyl ether sulfone) PPESK, poly(phthalazinone ether sulfone ketone) PPENK, poly(phthalazinone ether nitrile ketone) PMDA/ODA PI, poly(pyromellitic dianhydride-co-4,4 -oxydianiline). [Pg.28]

Dai, Y, Jian, X., Zhang, S., and Guiver, M. D. 2002. Thin film composite (TFC) membranes with improved thermal stability from sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK). Journal of Membrane Science 207 189-197. [Pg.34]

Sulfonated poly(phthalazinone ether sulfones) were directly prepared by polycondensation of 4-(4-hydroxyphenyl)phthalazinone with various rations of disodium salt of 5,5 -sulfonylbis-(2-fluorobenzenesulfonate) to 4-lluorophenylsulfone [117]. [Pg.96]

A suitable polymer material for preparation of carbon membranes should not cause pore holes or any defects after the carbonization. Up to now, various precursor materials such as polyimide, polyacrylonitrile (PAN), poly(phthalazinone ether sulfone ketone) and poly(phenylene oxide) have been used for the fabrication of carbon molecular sieve membranes. Likewise, aromatic polyimide and its derivatives have been extensively used as precursor for carbon membranes due to their rigid structure and high carbon yields. The membrane morphology of polyimide could be well maintained during the high temperature carbonization process. A commercially available and cheap polymeric material is cellulose acetate (CA, MW 100 000, DS = 2.45) this was also used as the precursor material for preparation of carbon membranes by He et al They reported that cellulose acetate can be easily dissolved in many solvents to form the dope solution for spinning the hollow fibers, and the hollow fiber carbon membranes prepared showed good separation performances. [Pg.165]

Fang J, Shen PK (2006) Quatemized poly(phthalazinon ether sulfone ketone) membrane for anion exchange membrane fuel cells. J Membr Sci 285 317-322... [Pg.215]

Kim DS, Shin KH, Park HB, Lee YM (2004) Preparation and characterization of sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK)/silica hybrid membranes for direct methanol fuel cell applications. Macromol Res 12 413-421... [Pg.229]

Yang Y, Yang D, Zhang S, Wang J, Jian X. Preparahon and characterizahon of poly(phthalazinone ether sulfone ketone) hollow hber ultrahltrahon membranes with excellent thermal stability. J Membr Sci 2006 280(1-2) 957-68. [Pg.204]

Wu, X., He, G., Gu, S., Hu, Z., Yao, P. Novel interpenetrating polymer network sulfonated poly(phthalazinone ether sulfone ketone)/polyaciylic acid proton exchange membranes for fuel cell. J. Membr. Scl. 295, 80-87 (2007)... [Pg.50]

Jian XG, Xing DB, Zhang SH, Yin CX, Zhang BG. Effect of amination agent on the properties of quatemized poly(phthalazinone ether sulfone) anion exchange membrane for vanadium redox flow battery application. J Membr Sci 2010 354 68-73. [Pg.96]

Xiao GY, Sun GM, Yan DY, Zhu PF, Tao P (2002) Synthesis of sulfonated poly (phthalazinone ether sulfones) by direct polymerization. Polym Prepr 43(19) 5335-5339... [Pg.428]

Poly(phthalazinone ether sulfone ketone) Fig. 4.2 Macromolecular formula of some polymers... [Pg.93]

Qi W, Lu C, Chen P, Han L, Yu Q, Xu R (2012) Electrochemical performances and thermal properties of electrospun Poly (phthalazinone ether sulfone ketone) membrane for fithium-ion battery. Mater Lett 66(1) 239-241. doi 10.1016/j.matlet.2011.08.042... [Pg.107]

Sulfonated poly(phthalazinone ether sulfone ketone) (sPPESK) (Eig. 1.10) was prepared by sulfonation of PPESK with faming H2SO4. The proton conductivity of sPPESK (DS of 81%) was 0.013 at 80 °C (not much lower than that of Nafion 15). On the other hand, its permeability to methanol at 15 °C was apparently nearly 40 times less than that of Nafion 115. These results seem to indicate that the Faraday efficiency of DMFCs may be good, if sPPESK membranes are used as PEMs [168]. [Pg.32]

FIG. 5.21 Structure of quatemized poly(phthalazinon ether sulfone ketone) [169]. [Pg.323]

In comparison with the membranes with common aromatic skeletons such as poly-sulfane (PS), poly(ether ether ketone), poly(phthalazinon ether sulfone ketone), poly(etherimide), poly(benzimidazole), poly(phenylene oxide), polysiloxane, poly(oxyethylene) methacrylate, poly(arylene ether sulfone), and polyethersulfone Cardo, which are generally at high price and of complicated synthesis processes, the most important advantages of the aliphatic polymer materials as PEM membranes are their low cost, easy preparation, and simple structure. These aliphatic PEMs are particularly environmentally friendly (e.g., if the quatemization process is proceeded when these aromatic membranes are used for alkaline PEM fuel cells, the synthesis route uses chloromethyl ether for chloromethylation, which is very toxic and carcinogenic). However, the stability of the aliphatic PEMs is not very good. This is probably the biggest challenge when they are used in electrochemical devices. [Pg.481]

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