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Frothed black liquor as a renewable cost effective precursor to low-density lignin and carbon foams
- Source :
- Reactive and Functional Polymers. 132:145-151
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- By whipping air into a solution containing the pulp processing by-product black liquor, crosslinker and surfactant, stable air-in-black liquor froths were produced. The air volume in the froths was controlled by tuning the viscosity of the black liquor and the whipping time. By the selectively crosslinking the renewable lignin and hemicellulose content in the black liquor froths, lignin foams possessing a porosity of up to 88% have been produced. The porosity, pore and pore throat sizes decreased with increasing viscosity of the continuous liquid phase of the black liquor froths. The resulting lignin foams were pyrolysed to produce renewable carbon foams, which retained the shape and macropore structure of the lignin foam precursor well, opening the door to structurally designable carbon foams from lignin. The work demonstrated that froth templating using an industrial by-product is a viable low-cost method to produce both stable lignin and carbon foams.
- Subjects :
- Materials science
Polymers and Plastics
General Chemical Engineering
02 engineering and technology
engineering.material
010402 general chemistry
01 natural sciences
Biochemistry
chemistry.chemical_compound
Pulmonary surfactant
Materials Chemistry
Environmental Chemistry
Lignin
Hemicellulose
Porosity
Macropore
business.industry
Pulp (paper)
General Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Renewable energy
chemistry
Chemical engineering
engineering
0210 nano-technology
business
Black liquor
Subjects
Details
- ISSN :
- 13815148
- Volume :
- 132
- Database :
- OpenAIRE
- Journal :
- Reactive and Functional Polymers
- Accession number :
- edsair.doi...........6814cb8306b94fa0d7ebb228825988d5