Characterisation of Nitrocellulose by Gel Permeation Chromatography. Part 1, Technique and Calibration

Abstract : The characterisation of nitrocellulose by gel permeation chromatography is reviewed in the light of experience in MQAD. Methods are compared for the calibration of molecular weights by several 'universal' calibration methods. The influence of the concentration effect is very large, and extrapolation of average molecular weights to zero concentration is considered to give the best repeatability. Problems arising from peak shape, solution stability and the influence of degree of nitration are discussed.