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Öğe DETERMINATION OF IRON BY ICP-AES IN STEREOREGULAR POLY(PROPYLENE OXIDE) PREPARED BY PRUITT-BAGGETT CATALYST(Marcel Dekker Inc, 1994) COLAK, N; GUMGUM, BPartially stereoregular poly(propylene oxide) (PPO) samples synthesized by Pruitt-Baggett catalyst (PBC) were dissolved in benzene, and Fe in the polymer was extracted with acidic aqueous solutions. The Fe in the polymer could be extracted gradually with 3 M HCl, but it could not be extracted with water and dilute HCI solutions. The Fe in the aqueous solutions was determined by ICP-AES (inductively coupled plasma-atomic emission spectrometry). It has been found that increasing the Fe in the aqueous solutions decreases the molecular weights of polymer samples.Öğe FRACTIONATION OF PARTIALLY STEREOREGULAR POLY(PROPYLENE OXIDE)(Elsevier Sci Ltd, 1986) ALYURUK, K; OZDEN, T; COLAK, N[Abstract Not Available]Öğe POLYMERIZATION OF PROPYLENE-OXIDE BY THE PRUITT-BAGGETT CATALYST(Elsevier Sci Ltd, 1989) COLAK, N; ALYURUK, K[Abstract Not Available]Öğe SYNTHESIS OF OLIGO(ETHYLENE GLYCOL) DERIVATIVES(Inst Organic Chem and Biochem, 1994) HOSGOREN, H; COLAK, N; OZTURKMEN, NOligo(ethylene glycol) derivatives were obtained by the reaction of oligo(ethylene glycol) chlorohydrins with epichlorohydrin using H2SO4 Catalyst and subsequent treatment with NaOH in ether solution. The structure of the obtained products was characterized by C-13 NMR and IR spectra.
