维利
2.Study on The Concentration Effects in GPC 4. A New Method for Determination of Second Virial Coefficients from the Concentration Effects
3.The most recent German national to win the prestigious peace prize was Willy Brandt, the late Social Democratic Chancellor and politician, who won the award in 1971.
4.The Huggins parameter X_1 is 0.430. The composition of θ solvent of PPES was also determined. It is DMF/C_2H_5OH = 81.5/18.5 (in volume).
5.This paper reports a study on the prediction of polymer-solvent interaction parametersand second virial coefficients based on the Yamakawa two-parameter theory using Flory-Krigbaum-Orofino (FKO), modified Flory-Krigbaum-Orofino (MFKO) and Kurata-Yama-kawa (KY) models and Krigbaum empirical relation given the intrinsic viscosity in a par-ticular solvent and the intrinsic viscosity under theta condition together with the molecu-lar weight of the polymer.
6.After correction for polydispersity, a monodispersed [η] -M relationship has been obtained:[η] = 2.33 × 10-3 M0.88 (ml/g, at 25℃, in THF)For the copolymer in THF, The second virial coefficient A2 decreases as the molecular weight increases.
