Results 21 to 30 of about 6,364 (194)

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

open access: yesGreen 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

Lignin Valorization via Acidolysis with Ethylene Glycol Stabilization [PDF]

open access: yes, 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

The impact of thermomechanical pulp fiber modifications on thermoplastic lignin composites

open access: yesComposites 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

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

open access: yesAdsorption 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

open access: yesBioResources, 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

open access: yesIndonesian 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

Multilayer Biobased Poly(ethylene furanoate)/Graphene Oxide Nanofibrous Membranes With Directional Water Transport for Efficient Microplastics Filtration

open access: yesAdvanced Materials Technologies, EarlyView.
A self‐assembled multilayer biobased PEF/GO nanofibrous membrane was developed by electrospinning for efficient PLA microplastics (MPs) filtration. The membrane combines superhydrophilicity, directional water transport, mechanical robustness, and a synergistic size‐exclusion interception and electrostatic repulsion MPs separation mechanism, enabling ...
Juraij Kandiyil   +6 more
wiley   +1 more source

Adaptive Responses of Tropical Crops: A Multi‐Scale Omics Integrated Perspective

open access: yesAdvanced Science, EarlyView.
Tropical crops integrate genomic, morphological, physiological, and ecological adaptations to thrive under extreme and variable environments. This review highlights how natural selection, domestication, and breeding shape stress resilience, resource‐use strategies, and productivity in sugarcane, banana, cassava, rubber and oil palm, offering new routes
Peilin Wang   +11 more
wiley   +1 more source

Inspiring effect of lignin on the properties of nanocrystalline cellulose films

open access: yesCarbohydrate Polymer Technologies and Applications
The 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

open access: yesBioResources, 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

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