Assembly of lignin-based colloidal particles: effects of cationic surfactants, molecular weight, and solvent on morphology.

ABSTRACT: Sodium lignosulfonate (LS) is a lignin derivative, which has abundant resources and is an environmentally friendly raw material. In this study, cetyltrimethylammonium bromide (CTAB) and stearyltrimethylammonium bromide (STAB) were combined with LS at the isoelectric point for hydrophobic self-assembly. Transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) spectroscopy, and static contact angle data proved that LS/CTAB could form colloidal spheres, while LS/STAB could not form such spheres. The impact of the molecular weight of LS on the self-assembly of LS/CTAB was investigated by using the TEM, FTIR, and static contact angle data. The obtained results showed that LS/CTAB with 10 000-50 000 Da of LS could form colloidal spheres, while LS/CTAB with 3000-5000 Da of LS cou

SUBMITTER: Liu D 

PROVIDER: S-EPMC9054004 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature