Results 21 to 30 of about 6,331 (182)
Chemical Modification of Plasticized Lignins Using Reactive Extrusion
Frontiers in Chemistry, 2019 The reaction of esterification of plasticized Kraft lignin (KL) with succinic and maleic anhydrides using reactive extrusion (REX) was studied in detail. DMSO, glycol and glycerol were found to be efficient plasticizers for lignin. The chemical structure
Romain Milotskyi +4 more
doaj +1 more source
Green Chemistry Letters and Reviews, 2022 Research towards the production of renewable chemicals for fuel and energy industries has found lignin valorization as key. With a high carbon content and aromaticity, a fine-tuning of the depolymerization process is required to convert lignin into ...
Marcia Gabriely A. da Cruz +5 more
doaj +1 more source
The impact of thermomechanical pulp fiber modifications on thermoplastic lignin composites
Composites Part C: Open Access, 2021 Cellulose and lignin are abundant renewable biopolymers that can be used for the manufacture of new, environmentally friendly materials. The objective of this study was to produce composites of kraft lignin, which were reinforced with cellulosic ...
Maarit H. Lahtinen +6 more
doaj +1 more source
Adsorption Science & Technology, 2018 In this study, alkali lignin modified by ethylene glycol and lignin nanoparticles was prepared through acid precipitation technology. Lignin nanoparticle-g-polyacrylic acid adsorbent was prepared using copolymerization reactions between lignin ...
J Azimvand, Kh Didehban, SA Mirshokraie
doaj +1 more source
BioResources, 2014 Softwood lignin prepared by soda-anthraquinone (AQ) cooking does not have thermal melting characteristics. To improve the properties of softwood soda-AQ lignin, we have invented a new method of lignin modification using dried black liquor powder by a ...
Kukjin Yoon +7 more
doaj +1 more source
Synthesis and Characterization of Lignin-Based Polyurethane as a Potential Compatibilizer
Indonesian Journal of Chemistry, 2018 Lignin is one of the most abundant biopolymer on earth. It has polar and non-polar side due to its hyperbranched structure, but the polarity of lignin has a higher tendency than non-polarity.
Salma Ilmiati +4 more
doaj +1 more source
Lignin Valorization via Acidolysis with Ethylene Glycol Stabilization [PDF]
, 2021 This thesis describes several aspects of lignin acidolysis with ethylene glycol stabilization and possible applications of the obtained monomers. An efficient strategy was developed to convert native lignin in lignocellulose to new lignin-derived platform chemicals (G/S-C2-acetals), a set of monomers that is not accessible via other lignin ...
openaire +1 more source
Acid-Catalyzed Solvolysis of Softwood in Caprylyl Glycol to Produce Lignin Derivatives
ACS OmegaGlycol lignin (GL) is produced via the acid-catalyzed solvolysis of softwood meal using glycols such as polyethylene glycol. The physicochemical and thermal properties of GL are expected to be controllable by varying the glycol type. In this study, caprylyl glycol (CG), which is a biobased glycol derived from the caprylic acid component of coconut and ...
Tomohiro Yamada +4 more
doaj +4 more sources
Inspiring effect of lignin on the properties of nanocrystalline cellulose films
Carbohydrate Polymer Technologies and ApplicationsThe development of cellulose and lignin-based materials is the focus of numerous research projects due to increasing environmental awareness. However, cellulose and lignin cannot be melted or dissolved in their original forms, which limits their ...
Emília Csiszár +3 more
doaj +1 more source
Organic Acid Lignin-based Polyurethane Films: Synthesis Parameter Optimization
BioResources, 2016 Polyurethane (PU) films were prepared by solution casting using a three-component system, namely, a novel solvolytic lignin, polyethylene glycol (PEG), and tolylene 2,4-diisocyanate (TDI), with dibutyltin dilaurate as a catalyst.
Laurence Llovera +2 more
doaj +1 more source