P2.28 – Lignin-based organogels: a tough and flexible renewable solution
Organogels are soft materials fused with an organic liquid phase. Developing organogel with good mechanical durability, non-toxicity, and environmental stability offers potential for diverse applications. However, conventional organogels often rely on synthetic materials and toxic solvents, exhibit insufficient mechanical strength, and involve energy-intensive fabrication methods. Biobased organogels offer certain advantages. In this regard, lignin, a […]
3.1 Prehydrolysis liquors valorized to a flame-retardant coating
The production of dissolving grade pulp necessitates the removal of hemicellulose from biomass. The resulting prehydrolysis liquors are currently incinerated at low efficiency, hampering pulp production. Herein, the preparation and characterization of a polymer synthesized from hemicellulose derived monomers is described, offering an alternative to incineration. The polymer was prepared without solvent at room temperature, […]
YRA – Nanoengineered by Nature: Energy Storage Materials from Self-Assembled Cellulose Nanocrystals
Supercapacitors employing electrochemical double layer capacitance (EDLC) for charge storage require electrode materials with high specific surface areas and narrow, nanoscale pore size distributions.[1,2] Activated carbons, which are cost-effective to produce and have the necessary surface area and pore geometries, are often used for this purpose.[2] Abundant biopolymers such as cellulose are interesting sources for […]
2.10 Lignin-based catalysts for catalyzing CO2 cycloaddition to epoxides
Cyclic carbonates have received considerable attention from academy and industry because of their applications as polar aprotic solvents, non-ionic surfactants, electrolytes in Li-ion batteries and precursors for chemical syntheses. These compounds can be synthesized through cycloaddition reaction of CO2 to epoxides in mild conditions, which is a sustainable strategy contributing to carbon neutrality. Lignin and melanin, […]
2.3 Optimized synthesis of a high oleic sunflower oil derived polyamine and its lignin-based NIPUs
The development of bio-based materials is crucial for reducing the dependence on fossil resources. Being one of the major natural sources of aromatic scaffolds, lignin holds high potential for valorization, both for high-value added chemicals as well as its use as a macromonomer for lignin-based polymer production. This work presents an innovative approach to synthesizing […]
9.2 Machine learning-assisted near infrared spectroscopy for non-destructive monitoring of cellulose pulp extractives
Extractives are various low molar mass compounds found in plants, their main role is to protect against oxidation, microbial attack and adverse weather conditions. Some types of extractives can be a source of process and quality issues followed by financial losses in the pulp and paper industry. Ideally, the extractive content in the pulps should […]
2.11 Advanced aromatic platforms from lignocellulose for high-value materials production
Keywords: lignin, Depolymerization, heterogeneous catalystLignin is the largest natural source of aromatic compounds which, and it plays a crucial role in advancing sustainable chemistry by reducing dependence on fossil resources. The ongoing study investigates the catalytic reductive depolymerization of lignin originating from various industrial sources, aiming to produce fractions tailored for high-value applications such as adhesives, polymer chemistry, […]
14.6 Free energy of solvation simulations enlightening thermodynamics behind lignin solubility
A key property in all lignin valorization processes is the solubility of lignin in different solvents. Therefore, understanding the fundamentals, i.e. the solubility mechanisms from a physicochemical point of view at the atomistic level, is of great importance. Solubility is related to the free energy of solvation, which is a sum of changes in enthalpy […]
3.4 Suberin-based aqueous dispersions for barrier packaging applications
Barriers and coatings are commonly used as protective layers of consumables such as food and liquid packages1,2, however, currently harnessed conventional barrier layers are predominantly made from fossil-based polymers, with increasing global consumption causing concerns related to climate change. Therefore, bio-based barriers and coatings are urgently needed to reduce greenhouse gas emissions and our dependency […]
2.8 In-situ reactive fractionation of lignocellulosic biomass to produce aminated lignin
Amine-modified lignin is regarded as a promising amine-functionalized solid adsorbent for carbon capture and storage, owing to its high reactivity, excellent thermal stability, and strong adsorption performance. Aminated lignin is typically derived from technical lignin through chemical modifications, with the Mannich reaction being a commonly employed method.1 However, the unavoidable condensation that occurs during the […]
