Jan 1, 2015 · The present investigation includes extraction of lignin from different biomass resources like flax fiber, alfalfa, wheat straw, and pine straw using organosolv treatment which was then characterized through FT-IR, DSC and TGA testing methods.

Fourier-transformed infrared spectroscopy (FT-IR) was evaluated as an analytical technique for the estimation of the chemical composition and functional properties of lignin.

Jan 1, 2016 · Infrared spectroscopy was used to study the influence of temperature on the functional groups of treated lignin. Thermal treatment of lignin with formic acid causes a decrease of OH functional group of lignin and an increase of …

Jun 18, 2019 · The structural characteristics of the isolated bamboo lignin were investigated by Fourier transform infrared (FT-IR) and nuclear magnetic resonance (13 C NMR and HSQC NMR) spectroscopy in detail.

The FTIR-ATR of extracted lignin (noncryomilled and cryomilled with different times) samples clearly indicate the presence of various characteristic functional groups of lignin as it was also...

Oct 1, 2020 · UV and FTIR results show the fractionated lignin consist significant amount of conjugated and non-conjugated phenolic groups. MALDI-TOF MS technique used to characterized the isolated lignin, which is observed more intensively interunit peaks with molecular mass range between m/z 500 and 800.

Feb 20, 2019 · In this study, we demonstrated a simple and rapid nondestructive measurement technique for determining the lignin content of biomass using FTIR spectroscopy as an alternative to the conventional chemical analysis methods.

Jun 30, 2023 · In this paper, three sampling techniques for fourier transform infrared (FTIR) spectroscopy were assessed both qualitatively and quantitatively, delineating how these affected the resultant spectra.

May 27, 2008 · This model allowed to clear discrepancies in the bands parameters of different mild isolated (lignins of Bjorkman, Pepper and Freudenberg), dioxane and technical lignin spectra. It was helpful for studying lignin structure changes during degradation procedures.

Milled wood lignin (MWL) was isolated from Dendrocalamus sinicus, an abundant bamboo variety in the earth, using Bjorkman method. Elucidation and quantification of the chemical structures for the isolated MWL have been facilitated by employing FT-IR and NMR techniques.