The interaction of poly(1,l -dimethylpyrrolidinium-3 ,Cdiylethylene chloride) [poly(diallyldimethylammonium chloride)] (1) with ferro-and ferricyanide anions was investigated by conductometric titration, viscometry, IR and Raman spectroscopy. It could be shown that the binding of ferro-and ferricyanide anions with 1 proceeds by means of an ionic mechanism and is accompanied by a spectral shift of the cyanide bands.
The conformational transition expanded coil to compact globule for linear and crosslinked poly(4-but-3-en-1 -ynyl-l-methylpiperidin-4-01), poly(l-[2-(4-hydroxy-1-methyl-4-piperidyl)ethynyllethylene), (1) in aqueous and aqueous-salt solutions was investigated. The free energy of the conformational transition for linear 1 * nHCI was calculated. It was shown that in aqueous solution 1 is characterized by a lower critical solution temperature (LCST). The collapse of crosslinked 1 on changing the ionization state (aqueous salt solution) and temperature was observed and is similar to a phase transition.
In this paper the results of an investigation of complex formation in the system poly(ethy1ene glycol)/random copolymer of methacrylic acid (MAA) and methyl methacrylate (MMA) -(76,8 mol-% of MAA)-are given. This pair of interacting polymers differs from the formerly investigated poly(methacry1ic acid)/poly(ethylene glycol) system ' -3) by the presence of an inert component (MMA) in the copolymer chains which does not take part in the complex formation and disturbs the complementarity of the reacting macromolecules. Information about interpolymer complexes of random copolymers4) is very limited.
Experimental PartPoly(ethy1ene glycol) (PEG)"' "Schuchardt" samples with molecular weights of 600 to 40. lo' and high molecular weight poly(ethy1ene oxide) (PEO)"' samples with molecular weights of 600. lo', 1,5. lo6 and 6,O. lo6 as calculated from the intrinsic viscosity [ 71 in benzene by means of') [7] =3,97.
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