Polyfarylene ether

Dhara et al. [6] reviewed the synthesis and properties of polyfarylene ether) polymers. The role of trifluoromethyl groups on the polymerization process and polymer properties was also demonstrated. Kim et al. [7] also reported the synthesis of hyperbranched poKarylene ether) polymer. The selective and sequential displacement of the 

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Quentin may have been the first to sulfonate (arylene ether sulfone).168 In this patent, it was demonstrated that the bisphenol A polysulfone could be sulfonated by chlorosulfonic acid to produce a sulfonated polyfarylene ether sulfone), which was used for desalination via reverse osmosis. However, the chlorosulfonic acid may be capable of cleaving the bisphenol A polysulfone partially at the iso-propylidene link or it might induce branching and crosslinking reactions by... 

G(S02> for Several PolyfArylene Ether Sulfones) After Vacuum Irradiation at 150°C... 

LEWIS ETAL. Radiation-Resistant Polyfarylene ether sulfones)... 

PolyfArylene Ether)s Containing Heterocyclic Units Table 6. Properties of polyfarylene ether phenylimidazole)s... 

The 1,3,4-oxadiazole unit was initially incorporated into PAE in 1967 by reacting 2,5-di(4-fluorophenyl)-l,3,4-oxadiazole with bisphenol A [1]. The same route and same difluoro monomer were used more recently to prepare a series of polyfarylene ether l,3,4-oxadiazole)s [33]. The corresponding dinitro or di-chloro compounds, 2,5-di(4-nitro or chlorophenyl)-1,3,4-oxadiazole [33], were... 

Table 11. Glass transition temperatures of polyfarylene ether pyrazole)s...

Table 10. Properties of BMI modified with 30 wt % of functionalized polyfarylene ether ketone) as a function of the propenyl group concentration (96)...

The preliminary electron beam experiments on all aromatic polyfarylene ether sulfone)s were performed by Hedrick et al. [58] and the detailed investigation on radiation effects of these polymers were recently carried out by Lewis et al. [59]. They found that an aromatic polysulfone based on 4,4 -biphenol and 4,4 -dichlorodiphenyl sulfone exhibited the highest radiation tolerant in a systematic series of polyfarylene ether sulfone)s with "/-irradiation up to 4 x 106 Gy. 

HEDRICK LABADIE Synthesis of Polyfarylene ether phenylquinoxaline) 217... 

Urea linkages have been monitored during the extrusion production of a polyurethane-urea through doping with a fluorescent aromatic diamine chain extender, whereas soluble polyfarylene ether)s, thioethers and sulfones have been synthesized, which emit strongly in blue and red regions. Brownian... 

Thiodithiophenol polyfarylene ether phenyl phosphine oxide) Single Tgi FTIR NMR - Wang et al. (2001a)... 

Fig. 7.29 Polyfarylene ether sulfone)s with superacid groups...

Keywords Polyfether amide) and polyfether amide-imide), polyfarylene ether), benzoxazine polymers, polyfether ether ketone) (PEEK), polytriazole, hyperbranched conjugated polymers, alternating copolymers... 

Figure 1.7 Synthesis of h)rperbranched polyfarylene ether). Reproduced from reference 7 with permission from American Chemical Society.

Fig. 12 Sulfonated polyfarylene ether ketone) block copolymers [48,49]...

Both methods, the post-sulfonation of preformed polyfarylene ether sul-fone)s and the preparation of functionalized polymers by the use of sulfonated monomers, have been widely described in the hterature and will be discussed in the following sections. 

Sulfonated polyfarylene ether sulfone) (SPAES) Sulfonated siUcate-nanoencapsulated polyimide (sPl) The composite membrane had relatively comparable conductivity with that of SPAES but better mechanical strength with SPAES [84, 85]... 

Zhang, X., Liu, S., Liu, L., Yin, J. (2005) Partially sulfonated polyfarylene ether suUbne)-h-polybutadiene for proton exchange membrane. Polymer, 46, 1719 1723. 

In 1, Kim SY (2005) Hyperbranched polyfarylene ether amide) via nucleophilic anunatic... 

Sulfobutylation of HNPAEK-xx to Sulfonated Naphthalene-Based PolyfArylene Ether Ketone) Copolymers(SNPAEK-xx)... 

Sakaguchi, Y, Kaji, A., Kitamura, K., Takase, S., Omote, K., Asako, Y, Kimura, K., Polymer electrolyte membranes derived from novel fluorine-containing polyfarylene ether ketone)s by controlled post-sulfonation. Polymer, 2012,53,4388-4398. 

Bi, C., Zhang, H., Xiao, S., Zhang, Y., MaL Z., Li, X., Grafted porous PTEE/partially fluorinated sulfonated polyfarylene ether ketone) composite membrane for PEMFC applications, J. Membr. ScL, 2011, 376,170-178. 

Zhou, S., HaL S.D., Kim, D., Cross-hnked polyfarylene ether ketone) proton exchange membranes with high ion exchange capacity for fuel cells. Fuel Cells, 2012, 12, 589-598. 

FIGURE 6.18 Chemical structures of sulfonated polybenzophenone/polyfarylene ether) block copolymer and their PEMFC performance. (Reprinted with permission from Miyahara, T Hayano, T Matsuno, S Watanabe, M and Miyatake, K., Sulfonated polybenzophenone/ poly(arylene ether) block copolymer membranes for fuel cell applications, ACS Appl. Mater. Interfaces, 4(6), 2881. Copyright 2012 American Chemical Society.)... 

FIGURE 11.12 Chemical structure of fluorenyl-containing polyfarylene ether sulfone ketone) ionomers. 

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