01675nas a2200169   4500008004100000022001400041245009600055210006900151260011000220300001600330490000600346520095900352100002001311700002501331700002301356856012601379       2015                        eng d  a2046-206900aPolyelectrolytes in dilute solution: viscometric access to coil dimensions and salt effects0 aPolyelectrolytes in dilute solution viscometric access to coil d  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a27674-276810 v53 a<p>Copolymers of acrylamide (AM) and diallyldimethylammonium chloride (DADMAC), differing in molar masses M (52.3 to 227 kDa) and degrees of charging y (0.2 to 0.6), were studied with respect to their viscometric behavior in dilute aqueous solutions containing variable amounts of NaCl. Complementary measurements were performed on a Brookhaven 90 plus particle size analyzer. M dominates the intrinsic viscosities [eta]. For the viscometric interaction parameters B this is only true for large concentrations of extra salt. [eta] and B as a function of solvent salinity follow Boltzmann laws. Coil dimensions, determined either via dynamic light scattering or viscometry, agree well. For low salt contents of the solvent the radii decrease with rising polymer concentration, whereas they increase for high salt concentrations; at a characteristic salinity of the solvent they become independent. Zeta potentials grow from +20 to +40 mV as y goes up.</p>1 aSuresha, P., R.1 aBadiger, Manohar, V.1 aWolf, Bernhard, A.  uhttps://library.ncl.res.in/content/polyelectrolytes-dilute-solution-viscometric-access-coil-dimensions-and-salt-effects-0