RT Journal Article
T1 Thermal stability, degradation kinetics, and molecular weight of organosolv lignins from Pinus radiata
A1 Domínguez Toribio, Juan Carlos
A1 Santos, Tamara
A1 Rigual Hernández, Victoria De Los Ángeles
A1 Oliet Pala, María Mercedes
A1 Alonso Rubio, María Virginia
A1 Rodriguez, Francisco
AB Seventeen organosolv lignin samples were obtained from the black liquor of an ethanol–water treatment using Pinus radiata as raw material under varied conditions applying an experimental matrix designed by employing response surface methodology (RSM). The thermal degradation of lignin samples was studied by a thermogravimetric analyzer (TGA) under an oxidative atmosphere. The thermal stability was estimated by the degradation temperature at 10% conversion (T10%), and the values of the kinetic parameters of the degradation process of lignins were determined using a 3-Gaussian distributed activation energy model (DAEM). The total distribution of the activation energy was obtained, and the mean activation energies of the Gaussian distributions were in agreement with the literature. In addition, the organosolv lignins were characterized by gel permeation chromatography (GPC) to determine their molecular weight distributions. Processing conditions affected the molecular weight of the extracted organosolv ethanol lignins and consequently influenced their thermal stabilities.
SN 0926-6690
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/94004
UL https://hdl.handle.net/20.500.14352/94004
LA eng
NO Domínguez, J. C., et al. «Thermal Stability, Degradation Kinetics, and Molecular Weight of Organosolv Lignins from Pinus Radiata». Industrial Crops and Products, vol. 111, enero de 2018, pp. 889-98. https://doi.org/10.1016/j.indcrop.2017.10.059.
DS Docta Complutense
RD 15 sept 2024