1 research outputs found
Fractionation of Soda Pulp Lignin in Aqueous Solvent through Membrane-Assisted Ultrafiltration
An
industrial wheat straw lignin was fractionated by a multistep
process involving microfiltration followed by two membrane-assisted
ultrafiltration steps starting from an aqueous solvent solution. The
parent lignin and the different fractions were fully characterized
in terms of chemical composition and physicochemical properties by
gel permeation chromatography, gas chromatography–mass spectrometry,
high-performance liquid chromatography, thermogravimetric analysis,
differential scanning calorimetry analysis, and Fourier transform
infrared spectroscopy. The results show that the proposed process
allows us to selectively control the molar mass distribution of the
fractions and the related dependent properties. This strategy offers
a better understanding of the structural complexity of soda pulp raw
lignin and emerges as an essential tool for lignin valorization in
the context of material science and preparative organic chemistry