Abstract
The synthesis of new carbogels based on sodium lignosulfonates alone (LSNa) and interpolyelectrolyte complexes (IPEC) made by a combination of lignosulfonate and chitosan (CT) (i.e. IPEC-LSNa-CT) was investigated. The IPECs were converted into carbogels by slow and rapid pyrolysis (Pyslow and Pyrapid) and the influence of Py conditions on the formation of carbogels was established. It is demonstrated that the obtained carbogels have a high microporous structure with elevated total porosity values. The porosity of synthesised carbogels is on the nanoscale level, while about 80% of the internal surfaces obtained by both Pyslow and Pyfast is in the range of 0.7–1.0 nm pore size. It was found that elements of the initial precursor structure (LSNa) are stored in the carbon aerogels, if obtained by the appropriate pyrolysis technique.
Acknowledgements
This research was funded from FASO of Russia under the project agreement No 0410-2014-0029 “Physico-chemical basis for studying of main regularities of the fundamental cycle “structure – functional nature – properties” of natural polymer matrices of arctic ecosystems”. We used the equipment CCU SE “Arctic” [Northern (Arctic) Federal University] and the equipment of CCU SE CT RF-Arctic (IEPN, IPNA of Ural Division of Russian Academy of Sciences).
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Original Articles
- About structural changes of lignin during kraft cooking and the kinetics of delignification
- Utilization of lignin powder for manufacturing self-binding HDF
- Consecutive determination of softwood kraft lignin structure and molar mass from NMR measurements
- Production of hemicellulose oligomers from softwood chips using autohydrolysis followed by an enzymatic post-hydrolysis
- Morphological features of aerogels and carbogels based on lignosulfonates
- Wood based activated carbons for supercapacitor electrodes with sulfuric acid electrolyte
- New insights into the decomposition mechanism of chlorine dioxide at alkaline pH
- Upgrading of commercial pulps to high-purity dissolving pulps by an ionic liquid-based extraction method
- Hardwood kraft pulp structural features affecting refinability
- Brightness stability of eucalyptus-dissolving pulps: effect of the bleaching sequence
- Cellulose fiber based fungal and water resistant insulation materials
- Biomass conversion into blow-in heat insulation materials by steam explosion
- Effect of cationic polyelectrolytes in contact-active antibacterial layer-by-layer functionalization
- Nanocelluloses obtained by ammonium persulfate (APS) oxidation of bleached kraft pulp (BKP) and bacterial cellulose (BC) and their application in biocomposite films together with chitosan
- Volatile terpene extraction of spruce, fir and maritime pine wood: supercritical CO2 extraction compared to classical solvent extractions and steam distillation
- Protective effects of proanthocyanidins extracts from the bark of deciduous trees in lipid systems
- Short Notes
- Steam explosion treatments of technical hydrolysis lignin
- Moisture absorption properties of hardwood veneers modified by a sol-gel process
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Original Articles
- About structural changes of lignin during kraft cooking and the kinetics of delignification
- Utilization of lignin powder for manufacturing self-binding HDF
- Consecutive determination of softwood kraft lignin structure and molar mass from NMR measurements
- Production of hemicellulose oligomers from softwood chips using autohydrolysis followed by an enzymatic post-hydrolysis
- Morphological features of aerogels and carbogels based on lignosulfonates
- Wood based activated carbons for supercapacitor electrodes with sulfuric acid electrolyte
- New insights into the decomposition mechanism of chlorine dioxide at alkaline pH
- Upgrading of commercial pulps to high-purity dissolving pulps by an ionic liquid-based extraction method
- Hardwood kraft pulp structural features affecting refinability
- Brightness stability of eucalyptus-dissolving pulps: effect of the bleaching sequence
- Cellulose fiber based fungal and water resistant insulation materials
- Biomass conversion into blow-in heat insulation materials by steam explosion
- Effect of cationic polyelectrolytes in contact-active antibacterial layer-by-layer functionalization
- Nanocelluloses obtained by ammonium persulfate (APS) oxidation of bleached kraft pulp (BKP) and bacterial cellulose (BC) and their application in biocomposite films together with chitosan
- Volatile terpene extraction of spruce, fir and maritime pine wood: supercritical CO2 extraction compared to classical solvent extractions and steam distillation
- Protective effects of proanthocyanidins extracts from the bark of deciduous trees in lipid systems
- Short Notes
- Steam explosion treatments of technical hydrolysis lignin
- Moisture absorption properties of hardwood veneers modified by a sol-gel process