Completely Bio-based Polyol Production from Sunflower Stalk Saccharification Lignin Residue via Solvothermal Liquefaction Using Biobutanediol Solvent and Application to Biopolyurethane Synthesis

Sunflower stalk saccharification lignin residue was converted to a completely bio-based biopolyol via solvothermal liquefaction using acid catalyst. Different isomer-type biobutanediols were used to replace petroleum-derived reaction solvents. The reaction parameters were optimized according to meas...

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Bibliographic Details
Published in:Journal of polymers and the environment 2018-08, Vol.26 (8), p.3493-3501
Main Authors: Jung, Jae Yeong, Yu, Ju-Hyun, Lee, Eun Yeol
Format: Article
Language:English
Subjects:
Acids
Biodegradation
BIOLOGICAL MATERIALS
BIOMASS
BUTANEDIOLS
Catalysis
CATALYSTS
Chemistry
Chemistry and Materials Science
Conversion
Environmental Chemistry
Environmental Engineering/Biotechnology
Ethyl carbamate
FOURIER TRANSFORM SPECTROMETERS
Industrial Chemistry/Chemical Engineering
Infrared radiation
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LIGNIN
LIQUEFACTION
Materials Science
Original Paper
Polymer Sciences
POLYMERIZATION
POTASSIUM HYDROXIDES
PROPYLENE
Propylene glycol
Reaction time
RESIDUES
SACCHARIFICATION
SOLVENTS
SUNFLOWERS
SYNTHESIS
Thermal properties
THERMODYNAMIC PROPERTIES
URETHANE
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Description
Summary:Sunflower stalk saccharification lignin residue was converted to a completely bio-based biopolyol via solvothermal liquefaction using acid catalyst. Different isomer-type biobutanediols were used to replace petroleum-derived reaction solvents. The reaction parameters were optimized according to measurement of the biomass conversion and the hydroxyl and acid numbers. The lignin-derived biopolyol with a biomass conversion of 80.1%, hydroxyl number of 819.0 mg KOH/g, and acid number of 26.5 mg KOH/g was produced in the optimal condition (reaction temperature of 120 °C, 4 wt% acid catalyst loading, reaction time of 120 min, and 25 wt% biomass loading). The lignin-derived biopolyol was neutralized to decrease the acid number. The neutralized biopolyol was used to synthesize biopolyurethane via polymerization with poly(propylene glycol), tolylene 2,4-diisocyanate terminated. Urethane bond formation was confirmed by FT-IR analysis. The biopolyurethane showed good thermal properties, such as a T d5 of 273.4 °C, T d10 of 305.8 °C, and a single degradation peak at 387.2 °C.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-018-1235-2