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Nanocomposite membranes for water treatment were prepared by vapor-induced phase separation method from propionated lignin and cellulose triacetate (CTA). Three kinds of lignin were used: Kraft, Organosolv and Hydrolytic, which were propionated for improving their compatibility with CTA. Such chemical lignin modification was analyzed by FTIR, UV spectrophotometry and GPC. Morphology (through FE-SEM...
A phenomenological kinetic model has been developed for the pyrolysis at low heating rates of lignin activated with phosphoric acid. The model is based on thermogravimetry (TG) and differential thermogravimetry (DTG) data from pyrolysis experiments and assumes that lignin carbonization proceeds through a set of pseudo-first-order reactions. These reactions are a simplified description of the multiple...
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