Polymer structure of lignophenol II - Comparison of molecular morphology of lignophenol and conventional lignins

The molecular morphology of lignophenol and conventional lignins were analyzed with SEC-MALLS system. MALLS analysis has been used as method for absolute molecular weight of polymers. However determination of absolute molecular weight of lignin is difficult due to divisively and complication of lignin structure. But the difference in the molecular weight of lignin determined by MALLS and conventional calibration methods using linear polystyrene standard can show the difference of molecular morphology of lignin. The molecular morphology of lignocresol was more-spreading and linearity, compared with other lignins. It was suggested that this characteristic of lignophenol is concerned with thermoplasticity of lignophenol that other lignins do not have.