References page VII-438 .fr

3404,3432. Diffiusion into porous. Acetone and dioxane. Countercurrent. 3116 charcoal. Distribution between. Cellulose triacetate gel in. 439 immiscible liquids.
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Previous Page TABLE 3.

cont'd

Polymer

Method of fractionation

Solvent or solvent/nonsolvent mixture

Remarks

Refs.

Poly[ 1 -(3-sulfonatepropyl)-pyridinium-2-yl]-ethylene)] Poly(2-vinylpyridinium sulfopropylbetaine) Fractional precipitation Water/methanol Poly( 1 -toly l-2,5-dioxopyrrolidin-3,4-diyl) Fractional precipitation Chloroform/methanol 200C Poly[(4,4'-trimethylene-bis-( 1 -methyl piperidine)-iV-(2,3-butene)di-tetrafluoroborate] Chromatography Acetonitrile -f- acetic acid 0.5 M SEC, HEMA (70:30) Fractional solution Ethylene glycol monomethyl Column extraction, CPF ether/diisopropyl ether Poly[(4,4 '-trimethy lene-bis-( 1 -methyl piperidine)-N-(2,3-butene)dibromide] Chromatography Acetonitrile + acetic acid 0.5 M, SEC, HEMA (70:30) Fractional solution Ethylene glycol monomethyl Column extraction, CPF ether/diisopropyl ether Wool-gra/3r-poly(rc-butyl acrylate) Extraction Benzene or acetone Wool-gra/f-poly(ethyl acrylate) Extraction Benzene Benzene or acetone Wool-gra/ir-poly(methyl acrylate) Extraction Benzene Benzene or acetone Wool-gra/f-poly(methyl methacrylate) Extraction Benzene Benzene or acetone Wool-gra//-poly(methyl acrylate-co-vinyl acetate) Extraction Benzene Wool-gra/f-poly(vinyl acetate) Extraction Benzene

2238 3266 2898 2898 2898 2898 3356 2196 3356 2192,2195,2197 3356 6,2193 828,3356 2197 2189,2195,2197

3.11. RANDOM COPOLYMERS Poly(acetaldehyde-co-chloral) Fractional precipitation Chloroform/methanol Poly(acrolein-co-thiophenolmercaptal) Fractional precipitation Benzene/methanol Poly(acrylonitrile-c0-a-hydroxyisobutyric acid anhydrosulfite) Turbidimetric titration Dimethylformamide/chloroform Poly(5-( 1 -adamantyloxy)-2H-pyrrole-2-one-c