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MEMRANE SELLULOSEACETATE MADE WITH RADIATION OF POLYMER OMPOSITION, KIND OF SOLVENT AND CONCENTRATION OF ADDITIVE.

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Flat membrane sellulose acetate made with variation of polymer composition, kind of solvent and amount of additive have been done. Solvents observed on these experiments were acetone, dimethyil acetamide and N, methylpyrrolidone with formamide as additive. Parameters observed were flux, rejection coefficient and molecular weight cut-off membrane. From results of experiments found that polymer composition, kind of solvent and amount of additive could influence membrane characteristic resulted. High polymer consentration will give low flux ofthe membrane, but coefficient rejection on the contrary. Membrane made with dimethyl acetamide solvent give the highest flux, but the lowest coefficient rejection. Higher amount of additive added to dope solution, higher flux of membrane resulted. Key words: Selulosa asetat, variasi komposisi, jenis pelarut, aditif, fluks, rejeksi. SyahrilAhmad Pusat Penelitian Kimia (P2K) - LIPI