Poly trifluorochloroethylene

Monomer Synthesis. This follows the routes used for tetrafluoro-ethylene  

CCI3—CCI3 +HF Sbcatalyst CF2CI—CFCI2 +Zn/EtOH (25-54) 

Polymerization. As for tetrafluoroethylene free radically in suspension with redox system K2S208/NaHS03/AgN03 or in bulk with bis(trichloro-acetyl) peroxide. 

Properties. Poly(trifluorochloroethylene), -f-Cp2—CFC1 , is more susceptible to chemical attack than poly(tetrafluoroethylene), due to the C—Cl bond. The larger size of the chlorine atom, presumably in a compound with an atactic configuration, leads to a less tightly packed crystal structure, and hence to a lower melting point (220°C) and better solubility as compared to poly(tetrafluoroethylene). The glass-transition temperature is 50 C other transition temperatures have not been observed. If other 

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Poly(vinyl fluoride) Poly(vinyl chloride) Poly(trifluorochloroethylene) Poly(vinylidene fluoride)... 

Teflon and Kel-F are especially resistant to boiling concentrated mineral acids, including aqua regia, and to free halogens and most organic solvents. (Teflon = pol3detrafluoroethylene Kel-F = poly-trifluorochloroethylene.) While both of these materials are somewhat difficult to form and machine in the laboratory, they can be used up to almost 300°C,... 

Figure 10-13. The melting temperature dependence of the reciprocal lamellar thickness Ijd of lamellae for poly(trifluorochloroethylene). The lamellar thickness was measured as the inter-lamellar distance by small-angle X-ray analysis, and thus contains both the crystalline component and the amorphous surface layer (after J. D. Hoffman from data of P. H. Geil and J. J. Weeks).

Poly(trifluorochloroethylene), known as Daiflon , can be treated with tributyl phosphate, trioctylamine, or acetylacetone for example, to separate many cations into several groups (327). This material has been used in electrolytic cells and appears to have interesting environmental applications because of its inert nature. Similarly, a porous tetrafluoroethylene membrane infiltrated with 8-hydroxyquinoline can extract 95% of copper(II) in 2 h (328). A commercial... 

Daiflon, see Poly(trifluorochloroethylene) DDD, see Dichlorodiphenyldichloroethane DDT, see Dichlorodiphenyltrichloroethane n-Decane, 309, 315 Decarboxylase, 222 Demethylase, 206, 223 A -Demethylase, 222... 

Poly(sulfohydroxamic acid), 33 Polysulfonamide, 33 Poly(trifluorochloroethylene), 33 Polyurethane, 37... 

Poly(trifluorochloroethylene) was developed as a competitor to poly-(tetrafluoroethylene). The monomer synthesis proceeds from hexachloro-ethane via 1, l,2-trifluoro-l,2,2-trichloroethane. The monomer is free radically suspension polymerized with the redox system K2S20s/NaHS03/AgN03 or bulk polymerized with bis(trichloroacetyl peroxide). 

PCTFE n. Poly(trifluorochloroethylene) fiber. See polychlorotri-fluoroethylene. 

Polymers able to degrade by chain scission, such as PMMA, PTFE, poly-trifluorochloroethylene (PCTFE), PIB, PVC, cellulose, PVA, poly-a-methylstyrene and PS (low molecular weight). 

PCTFE Poly(trifluorochloroethylene) VC/A Poly(vinyl chloride-co-acrylate)... 

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