Organic Chemistry: Current Research
Open Access
ISSN: 2161-0401
+44 1478 350008
ISSN: 2161-0401
+44 1478 350008
Run-Cang Sun
Beijing Forestry University, China
Posters-Accepted Abstracts: Organic Chem Curr Res
Biomass is mainly composed of lignin, cellulose and hemicelluloses, the three kinds polymers account for more than 90% of the total content of plant cell wall. However, from a biorefinery scenario, biomass should be effectively separated into single component, such as lignin, hemicelluloses, and cellulose and then transformed the single component into value-added products. In our group, based on the well-isolated, well-defined composition and molecular structure of the single component (hemicelluloses and lignin), a series of novel biomaterials were developed.Hemicelluloses are a kind of heterogeneous polysaccharides; their functional derivatives can be widely used in papermaking, food, and pharmaceutical industries. In our group, several novel methods for fractional purification of hemicelluloses have been established, and the green hemicelluloses/cellulose dissolution systems and various high efficient and low cost modification methods have been proposed. A series of novel biomaterials based on hemicelluloses have been developed, such as cyanoethyl hemi cellulosic derivatives containing alkene, acetylene and nitrile groups, hemicellulose-graft-acrylic acid ionic hydrogels, novel thermosensitive semi-IPN hydrogel, photo responsive and photo cross linked hydro gels, hemicellulosic scaffold conjugates with matching performance, photoresponsive nano-hydrogels, nanostructured lipid carries, nanoparticles, Internally plasticized hemicellulose film, novel fluorescent xylan-type hemicellulosic derivatives, magnetic nanoparticles based on hemicelluloses, hemicelluloses supported metal nanoparticles, and hemicelluloses supported metal nanocomposites. Lignin, a major component of the cell wall of vascular plants, has long been recognized for its negative impact and treated as a by-product in a biorefinery. As the most complicated composition in lignocellulosic biomass, the separation and characterization of lignin is currently an important research focus in the field of biorefinery. In our group, the research content of lignin structure generally includes: (1) original lignin structure analysis; (2) in situ nuclear magnetic resonance (NMR) technology in the application of lignin structure analysis; (3) structure analysis and functional groups determination of the isolated lignin polymers; (4) the structural transformations of lignin during the pretreatment by NMR quantitative analysis. In addition, based on the well-characterized molecular structures, some lignin-based materials, such as polyurethane, hydrogel, lignin-phenol formaldehyde adhesive, have been successfully developed.
Email: rcsun3@bjfu.edu.cn