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Publications associées (72)
Quantification of Native Lignin Structural Features with Gel-Phase 2D-HSQC0 Reveals Lignin Structural Changes During Extraction
Jeremy Luterbacher, Stefania Bertella
Our ability to study and valorize the lignin fraction of biomass is hampered by the fundamental and still unmet challenge of precisely quantifying native lignin's structural features. Here, we developed a rapid elevated-temperature H-1-C-13 Heteronuclear S ...
Wiley-V C H Verlag Gmbh2024Seasonal variation in the xylem sap composition of six Australian trees and shrubs
Alice Jacqueline Frédérique Gauthey
In recent years, xylem sap composition has been shown to affect xylem hydraulics. However, information on how much xylem sap composition can vary across seasons and specifically under drought stress is still limited. We measured xylem sap chemical composit ...
Oxford2023Selecting Suitable Near-Native Lignins for Research
There are several methods to isolate near-native lignins, including milled-wood lignin, enzymatic lignin, cellulolytic enzyme lignin, and enzymatic mild-acidolysis lignin. Which one is the most representative of the native lignin? Herein, near-native ligni ...
Washington2023Sediment and large wood supply in proglacial streams: insights from the Upper Navisence catchment monitoring.
Christophe Ancey, Ivan Pascal, Bob de Graffenried
Preliminary analyses of data collected during 2023 and analyses of archived data provided new insights into the sources of wood and sediment in this river corridor. These analyses have highlighted the primary supply processes accountable for these material ...
2023Direct conversion of lignin to functionalized diaryl ethers via oxidative cross-coupling
Paul Joseph Dyson, Mingyang Liu
Efficient valorization of lignin, a sustainable source of functionalized aromatic products, would reduce dependence on fossil-derived feedstocks. Oxidative depolymerization is frequently applied to lignin to generate phenolic mono- mers. However, due to th ...
2023Robotically-Fabricated Nexorades from Whole Timber
Yves Weinand, Petras Vestartas, Aryan Rezaei Rad
This paper introduces the conceptual design of sustainable timber structures using raw wood. It pre-sents a workflow for systematically generating Nexorades using a tiling method for multi-valence quad subdivided surfaces. The system is designed based on a ...
2021Mechanical properties of a balsa wood veneer structural sandwich core material
Thomas Keller, Anastasios Vassilopoulos, Niloufar Vahedi
Balsa wood is an appropriate core material for structural sandwich applications due to its high strength- and stiffness-to-weight ratios. However, the mechanical properties vary considerably owing to the inherent scattering of natural wood materials. One a ...
2020Biomechanical Properties and Resistance to Uprooting of Laboratory‐Scale Wood Logs
Wood dynamics affects riparian ecosystem functioning and river morphology. The spatial and temporal dynamics of wood pieces in river corridors, in particular of deposited rejuvenated wood logs, depend on their biomechanical properties and resistance to upr ...
AGU2020Thermomechanical characterization of a balsa-wood-veneer structural sandwich core material at elevated temperatures
Thomas Keller, Anastasios Vassilopoulos, Chao Wu, Niloufar Vahedi
The tensile, compressive and shear behavior of standardized specimens cut from a veneered balsa wood used as structural sandwich core was investigated at ambient temperatures of up to 250 degrees C. The average moisture content was 9.1%. The specimens' res ...
ELSEVIER SCI LTD2020Mechanical properties of natural fiber composites produced using dynamic sheet former
Composites formed from wood fibers and man-made cellulosic fibers in PLA (polylactic acid) matrix, manufactured using sheet forming technique and hot pressing, are studied. The composites have very low density (due to high porosity) and rather good elastic ...
2020