P7.1 – Electrostatic Assembly of Hybrid Networks Formed by Amyloid Fibrils and Nanocellulose
This study examines the behavior of hybrid networks formed by amyloid fibrils and nanocellulose using coarse-grained simulations. By focusing on the role of electrostatic interactions, we investigate how these oppositely charged polyelectrolytes assemble and evolve structurally. The findings show that their rheological properties, particularly the storage modulus exponent, align with previous experiments and theoretical predictions. […]
P7.3 – Hofmeister Effects in Cellulose Regeneration from Cold Alkali Solvents: Ion-Specific Control of Self-Assembly and Structure
The Hofmeister series describes the influence of ions on the stability and solubility of macromolecules in aqueous solutions. While extensively studied in protein chemistry, Hofmeister effects also play a crucial role in cellulose dissolution and regeneration, which are fundamental processes for the development of sustainable materials. This study explores how different Hofmeister ions affect cellulose […]
P7.2 – Nanocellulose-ZIF8 biohybrids: Revealing morphology and self assembly using advanced microscopy
The development of biohybrid materials combining metal–organic frameworks (MOFs) and biopolymers has emerged as a promising strategy to enhance material performance in water purification applications. In this work, we report the synthesis and morphological characterization of zeolitic imidazolate framework-8 (ZIF-8)/nanocellulose hybrid materials. High-resolution scanning electron microscopy (SEM) reveals that ZIF-8 nanocrystals are embedded within cellulose […]
P7.4 – Construction of amphoteric hydrogel electrolytes with charge modification: An investigation of ion migration mechanism and antibacterial property
Hydrogel electrolytes have currently emerged as a research hotspot in the construction of flexible supercapacitors. However, the progress in developing hydrogels as quasi-solid electrolytes still faces challenges, such as low ionic conductivity and restricted flexibility. Herein, we developed a novel amphoteric hydrogel electrolyte (SML/QCS/PVA) with high ionic conductivity and flexibility, and proposed a rapid ion […]
7.Keynote – Functional polyelectrolyte gels
Polyelectrolytes are basic components of living systems and crucial elements for developing stimuli-responsive and reconfigurable materials. In this lecture, polyelectrolytes designed to organize into architectures with biomimetic functions including catalytic membranes, responsive hydrogels, and ion-conducting membranes will be described with emphasis on their response to the ionic spatial distributions and dynamics.
7.Invited – Quantitative Biomimetics of Fibrous Nanocomposites or How to Befriend Structural Stochasticity
Biomimetic nanocomposites from cellulose and other nanofibers are attractive as resource-conscious alternative to many current load bearing, charge transporting, ion-selective, and optically-active materials. These composites contain a superposition of order and disorder, which makes them difficult to design optimize. Similar pairing or non-randomness and stochasticity is also present in high-performance load-bearing, mass-transporting, ion-selective, and optically-active […]
7.5 Preparation of defectless TEMPO-oxidized nanocellulose dispersions
Ensuring the quality of cellulose nanofibers (CNFs), particularly in terms of dispersibility and defect density, is crucial for fully utilizing their potential. While CNF dispersibility can now be adjusted by selecting appropriate raw material species or employing specific chemical pretreatments, controlling defects remains a challenge. In our previous study, we found that the dent defects […]
7.3 Long-ranged double-layer forces at high ionic strengths, with modified Restricted Primitive Models
We have explored a hypothesis on a possible origin for the peculiar long-ranged interactions that the groups of Israelachvili and Perkin have found, using the Surface Force Apparatus (SFA), in concentrated salt solutions and ionic liquid mixtures[1,2]. We have specifically focused on aqueous salt solutions, although the concept can in principle be applied to other […]
7.4 Shear-induced orientational order provides optimum individualization during ultrasonication of cellulose nanocrystal
While ultrasonication is a widely used standard method to disperse nanoparticles across scientific and technological communities, in academia and industry, a parameter that has received surprisingly little attention is the particle mass fraction $W_s$ at which sonication takes place. For anisometric nanoparticles like nanorods, nanoplatelets and nanotubes, its importance goes far beyond viscosity tuning, since […]
7.9 Glucose/glucuronate co-polysaccharides stripped off in mechanical shearng of oxidized cell wall cellulose
The molecular byproduct inevitably contained in oxidized cellulose nanofibers (CNFs)/water dispersions was identified in this study to amorphous and water-soluble oxidized cellulose molecules with the major skeleton of glucose/glucuronate alternating co-polysaccharides. These oxidized molecules also possessed short segments of polyglucuronate, and the molar ratio of major glucose/glucuronate skeleton to the polyglucuronate segment by the number […]
