Structural and thermal characterization of lignin was carried out through Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).
FT-IR measurements of extracted lignin samples were taken using Shimadzu FTIR 8400s equipped with MIRacleTM ATR. Each scan recorded 50 scans, in the range from 500 to 4000 cm−1 with a resolution of 4 cm−1.
DSC measurements of lignin extracted from alfalfa, flax fiber, wheat straw and pine straw were performed using Q2000
from TA Instruments Inc.
Approximately 5.0 ± 0.25mg samples were placed in a hermetic pan and sealed.
DSC scans were performed at a heating rate of 5 ◦C/min from 30 to 400 ◦C under nitrogen environment.
Thermo-gravimetric analysis (TGA) was used to determine the thermal stability, decomposition temperature and char yield for each lignin extracted from different sources.
TGA measurements were taken using TA Instruments Q500 setup operating in nitrogen environment.
Samples for each measurement were maintained at 14.0 ± 5mg, and scans were performed from 30 to 800 ◦C at
10 ◦C/min to observe thermal degradation and stability of each lignin based on its sources.
Structural and thermal characterization of lignin was carried out through Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). FT-IR measurements of extracted lignin samples were taken using Shimadzu FTIR 8400s equipped with MIRacleTM ATR. Each scan recorded 50 scans, in the range from 500 to 4000 cm−1 with a resolution of 4 cm−1.DSC measurements of lignin extracted from alfalfa, flax fiber, wheat straw and pine straw were performed using Q2000from TA Instruments Inc. Approximately 5.0 ± 0.25mg samples were placed in a hermetic pan and sealed. DSC scans were performed at a heating rate of 5 ◦C/min from 30 to 400 ◦C under nitrogen environment. Thermo-gravimetric analysis (TGA) was used to determine the thermal stability, decomposition temperature and char yield for each lignin extracted from different sources. TGA measurements were taken using TA Instruments Q500 setup operating in nitrogen environment.Samples for each measurement were maintained at 14.0 ± 5mg, and scans were performed from 30 to 800 ◦C at10 ◦C/min to observe thermal degradation and stability of each lignin based on its sources.
การแปล กรุณารอสักครู่..
