| 초록 |
Lignin has been spotlighted as an abundant biorenewable resource in various industries. Consequently, studies on the molecular binding mechanism of lignin became essential to develop optimal design of lignin into higher-valued products. In this study, interaction forces between lignin nanofilms were directly measured using a surface forces apparatus (SFA) at various concentrations of electrolyte solution. The obtained results were analyzed by DLVO and hydrophobic theories. Additional measurements between CH3-SAM and lignin film confirmed that hydrophobic interaction dominated overall interaction of lignin film. Furthermore, lignin incorporated hydrophobic composites showed enhanced compressive strength, which validated lignin as a reinforcing binder without any addition of other polymeric materials. As the salt concentration increased, the compressive strength of the composite decreased, which corresponds to adhesion force decrease with increasing salt concentration, measured with SFA. |
