منابع مشابه
Structural Characterization of Lignin Extracted with Alkaline Hydrogen Peroxide from Furfural Residue
Lignin from furfural residue was extracted with alkaline hydrogen peroxide at different temperatures and times. The structural features of lignins were characterized by elemental analysis, GPC, FT-IR, H NMR, C NMR and Py-GC/MS. Results showed that the yield of lignin increased with the increase of reaction time and temperature. The maximum lignin yield of 41.4% (corresponding to the original li...
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Lignin is a natural biopolymer with a complex three-dimensional network. It is the second most abundant natural polymer on earth. Commercially, lignin is largely obtained from the waste liquors of pulping and bioethanol productions. In this study, wheat straw alkali lignin (WSAL) was demethylated by using an in-situ generated Lewis acid under an optimized demethylation process. The demethylatio...
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Inspired by the remarkable adhesive capabilities to wet surfaces of the secretes of the brown alga Fucus serratus, novel glues have been designed and characterized. Formulations composed of phloroglucinol, alginate, and calcium ions are capable of adhering to a variety of surfaces. Rheological data show that the presence of phloroglucinol lowers the amount of Ca(2+) ions required for sol-gel tr...
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An adhesive that functions well under moist conditions could facilitate many surgical procedures. In recent studies we designed novel biomimetic glues which mimic the adhesion mechanism of algae, renowned for their remarkable adherence to wet surfaces. Here we extend our previous studies and propose biomimetic formulations, composed of alginate gel and native phloroglucinol, that do not induce ...
متن کاملMass spectrometry-based sequencing of lignin oligomers.
Although the primary structure of proteins, nucleic acids, and carbohydrates can be readily determined, no sequencing method has been described yet for the second most abundant biopolymer on earth (i.e. lignin). Within secondary-thickened plant cell walls, lignin forms an aromatic mesh arising from the combinatorial radical-radical coupling of monolignols and many other less abundant monomers. ...
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ژورنال
عنوان ژورنال: Energies
سال: 2015
ISSN: 1996-1073
DOI: 10.3390/en8087897