Sodium lignosulfonate (SL) single molecule solutions were prepared by adding enough salt and filtering with syringe filter to remove the slow mode under monitoring of DLS, and Perrin equations were used to compute the structure parameters of the NaLS single molecules. Results showed that the structure parameters of the NaLS single molecules could fit well with ellipsoid structure. The best fit result was: an oblate ellipsoid with semiaxis a =1.6 nm and axial ratio r =3.5, D =5.73�10�7 cm2�S�1, and the corresponding Mw was 1.7�105 g/mol. The above work give a significant insight in understanding the basic structure of SL.

Molecular structure parameters of sodium lignosulfonate single molecules

248th National Meeting (2014)

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