3. CENTRIFUGAL WASHING AND RECOVERY AS AN IMPROVED METHOD
3.4. Conclusions
genus. Thus, utilising polystyrene as a reference, it can be proposed that ca 82% of the mass was recovered in the columns from our SEC system. The dispersity (replacing polydispersity index) for the lignin sample was observed to be Ð = 1.036 cm-3 g-1. The current definition for dispersity is that it is a ratio of Mn and Mw to measure the spread of the molar mass in a polymer (Stepto et al., 2009). The Ð value obtained for the sample studied is observed to show that the lignin polymer displayed a close to uniform structure, and falls in the narrow polymer range.
Lignins with a narrow molecular weight distribution are preferred for valorising.
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