Review of applications of G.P.C.: Part 2:

Pedersen and Lyngaae‐Jorgensen have reported the fractionation of five P.V.C. samples by G.P.C., and have produced curves which fitted the data obtained independently by osmometry and light scattering. These authors used G.P.C. to monitor the fractionation of P.V.C. samples. In one experiment P.V.C. samples were extracted with a range of solvents and, in another case, the acetone extract was dissolved in T.H.F. and fractionated by precipitation using methanol. The G.P.C. analyses were achieved using four columns (3 by 104, 104, 3 by 103 and 1·5 by 103nm porosities) at room temperature with a solvent flow rate of 1ml per minute and a sample concentration of 4·5mg per ml.