Results 41 to 50 of about 329,147 (290)

Characterization of Lignin Derivatives in Alkaline Polyethylene Glycol-treated Soda Cooking Black Liquor Powder

BioResources, 2016
To improve the thermal properties of softwood soda lignin, we studied a method of lignin modification using black liquor powder and polyethylene glycol (PEG).
Kukjin Yoon, Shiho Takahashi, Thi Thi Nge, Akiko Nakagawa-izumi, Hiroshi Ohi, Tatsuhiko Yamada   +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, Antti Ojala, Lisa Wikström, Kalle Nättinen, Sami Hietala, Juha Fiskari, Ilkka Kilpeläinen   +6 more
doaj   +1 more source

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, Romain Milotskyi, László Szabó, Kenji Takahashi, Christophe Bliard   +4 more
doaj   +1 more source

On the product selectivity in the electrochemical reductive cleavage of 2-phenoxyacetophenone, a lignin model compound

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, Bruno V. M. Rodrigues, Andjelka Ristic, Serhiy Budnyk, Shoubhik Das, Adam Slabon   +5 more
doaj   +1 more source

Safranin-O removal from aqueous solutions using lignin nanoparticle-g-polyacrylic acid adsorbent: Synthesis, properties, and application

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

Thermal Melting of Lignin Derivatives Prepared from Dried Black Liquor Powder of Softwood Soda-AQ Cooking and Polyethylene Glycol

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, Shiho Takahashi, ThiThi Nge, Olov Karlsson, Akiko Nakagawa-izumi, Hiroshi Ohi, Yasumitsu Uraki, Tatsuhiko Yamada   +7 more
doaj   +1 more source

Swelling of acetylated wood in organic liquids

, 2005
To investigate the affinity of acetylated wood for organic liquids, Yezo spruce wood specimens were acetylated with acetic anhydride, and their swelling in various liquids were compared to those of untreated specimens. The acetylated wood was rapidly and
A. N. NAYER, C. B. VICK, E. Obataya, E. OBATAYA, F. P. LIU, R. M. ROWELL, R. M. ROWELL, S. Shibutani, T. KAGIYA, Y. ISHIMARU, Y. ISHIMARU   +10 more
core   +2 more sources

New degradation compounds from lignocellulosic biomass pretreatment: routes for formation of potent oligophenolic enzyme inhibitors [PDF]

, 2017
In this study 26 new oligophenol cellulase inhibitors were discovered from wheat straw pretreatment liquors.
Meyer, Anne S., Rasmussen, H., Sørensen, H. R., Tanner, David Ackland   +3 more
core   +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, Jana Hafiza, Jaka Fajar Fatriansyah, Elvi Kustiyah, Mochamad Chalid   +4 more
doaj   +1 more source

PLA/WOOD BIOCOMPOSITES: IMPROVING COMPOSITE STRENGTH BY CHEMICAL TREATMENT OF THE FIBERS [PDF]

, 2013
A resol type phenolic resin was prepared for the impregnation of wood particles used for the reinforcement of PLA. A preliminary study showed that the resin penetrates wood with rates depending on the concentration of the solution and on temperature ...
Acha, Afrifah, Anderson, Auras, B. Pukánszky, Bax, Bledzki, Clemons, Clemons, Dányádi, G. Faludi, Huda, Huda, Huda, Huda, J. Móczó, K. Renner, Kasuga, Kasuga, Lemmouchi, Li, Lin, Ljungberg, Markarian, Martin, Mathew, Morandim-Giannetti, Murariu, Murariu, Murariu, Oksman, Paul, Perego, Petinakis, Plackett, Pukánszky, Pukánszky, R. Csizmadia, Renner, Renner, Rozman, Rozman, Shimarnura, Sykacek, Zhang   +44 more
core   +1 more source