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Poly PEEK Synthesis

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Materials and synthesis
Poly (viny alcohol) (PVA) (99%, Mw. 1,15,000; Loba ) was dried in a hot air oven about 80 ºC at least 12 hours before to use. Poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene) (Mw. 20,800; Sigma aldrich) (PEEK) pellets were dried at 100 ºC in hot air oven overnight before to the sulfonation process. Montmorillonite K10 (Na+MMT) (Himadia), Ion exchange resin (CDH), sulfuric acid (1.84 g cm-3, 98 wt%; Merck), Dimethyl sulfoxide (DMSO) and methanol were used as recieved.
SPEEK Synthesis
SPEEK was prepared through the via of sulfonation reaction by using concentrated sulfuric acid at desired temperature. The dried PEEK pellets were ground well with the help of a martter for reducing dissolution time of the PEEK polymer. 5 …show more content…

Bahavan Palani, R. Kannan, S. Rajashabala, S. Rajendran, G. Velraj, Ionics (2014); DOI: 10.1007/s11581-014-1193-1; P Bahavan Palani, K.Sainul Abidin, R Kannan, M.Sivakumar, Fu-Ming Wang, S Rajashabala, G Velraj, RSC Advances (2014); DOI: 10.1039/C4RA10788H]. The Na+MMT is dispersed in distilled water with contineous stirring about 48 hours at room temperature. The well dispersed homogeneous solution was passed through the ion exchange resin many times to ensure the complete exchange of cations by means of their pH variation noted from 7 to 2.8. The resultant solution was dried in an open air at room temperature. The modified product was ground well with marttar until the uniform sized powder was obtained. This modified product of the protonated MMT was utilized to prepare …show more content…

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