Matrix-free hydrodynamic study on the size distribution and conformation of three technical lignins from wood and non-wood

Qushmua E. Alzahrani, Gary G. Adams, Richard B. Gillis, Tabot M.D. Besong, M. Samil Kök, Emily Fong, Richard A. Harding, Jan E.G. van Dam, Richard J.A. Gosselink, Arthur J. Rowe, Stephen E. Harding
2016 Holzforschung  
AbstractMolecular weight (MW) and related conformational data of three commercially available technical lignins (Alcell L, kraft L, and soda L) have been studied by means of analytical ultracentrifugation, taking advantage of some recent developments in both sedimentation velocity and sedimentation equilibrium determinations. The lignins were dissolved in dimethyl sulphoxide (with ca. 90% solubility), and solutions were studied with regards to their oligomeric state, heterogeneity profiles
more » ... ribution of sedimentation coefficients), and molecular weight distributions (MWD). Alcell L and soda L have similar properties showing one major low MW component and two minor high MW components, whereas kraft L appears to be larger and more uniform, i.e., it shows a more monodisperse MWD. Weight average molecular weight (
doi:10.1515/hf-2014-0318 fatcat:a33inewac5cltnvysedy6jxvwe