P10.7 – Probing the alignment of nanocelluloses in the presence of MOFs during 3D printing- operando scanning SAXS
Additive manufacturing (3D printing) is playing an increasingly significant role in the processing and application of advanced materials by enabling the fabrication of geometrically complex structures. However, to expand the possibilities in materials design, it is essential to regulate the alignment of building blocks from the macroscopic scale to the molecular scale. 3D-printed Cellulose-Metal Organic […]
P10.1 – Role of Lignin in Moisture Interactions of Cellulose Microfibril Structures in Wood
Wood is a complex, hierarchical material that has complex interactions with moisture. Fundamentally, most of these properties derive from the how the biomolecules that make up the cell wall ultrastructure react to water. Understanding of how the polysaccharine components of the cell wall: cellulose and hemicellulose respond to moisture changes is improving [1]. However, the […]
P10.2 – Small-angle X-ray scattering analysis of moisture interactions in oriented pulp fibers
Interactions of pulp fibers with moisture, including the presence of water in differently sized pores and irreversible effects of drying, are critical for many applications of pulps. X-ray scattering offers an unprecedented view into the nanostructure and packing of cellulose microfibrils under different conditions. However, interpreting scattering data requires special efforts. This research focuses on […]
P10.3 – Optimizing Sulfonation in CTMP: Insights from Synchrotron X-ray Fluorescence Analysis
High-yield pulping, such as Chemithermomechanical Pulp (CTMP), is critical in developing sustainable fiber-based packaging materials. Achieving uniform lignin sulfonation during the impregnation process is crucial for maintaining fiber stiffness, maximizing bulk, and optimizing energy efficiency. However, current impregnation techniques often result in uneven distribution of sulfite (-SO₃⁻), leading to variations in fiber properties and increased […]
P10.4 – Controlling ion-induced phase transitions of flowing nematic colloidal particles
Cellulose nanocrystals (CNCs) are biologically derived nanoparticle of significant scientific interest due to their liquid crystalline properties with the ability to self-assemble into chiral nematic domains, called tactoids. We have investigated the process by which structural properties can be modified through hydrodynamic alignment and the addition of a salt (NaCl) solution, using in-situ scanning SAXS, […]
P10.5 – From traditional small-angle x-ray scattering experiments to tensor tomography experiments: advancing directional analysis of materials.
Small-angle x-ray scattering (SAXS) experiments are utilized to characterize materials and obtain the scatterer’s size, shape, polydispersity and two-dimensional (2D) orientation. The approach has evolved to include imaging, enabling the extraction of spatial information from various samples. An example will be made with thermoplastic materials and how scanning SAXS experiments can be used to obtain […]
P10.6 – Synchrotron X-ray microtomography to visualize zinc plating/stripping in aqueous zinc metal batteries with the presence of cellulose separator
Aqueous zinc metal batteries (AZMBs) hold promises for extensive energy storage applications due to the water-based electrolyte’s affordability and environmental friendliness. One integral component of the battery is separator, which serves as an insulator for electrons and allows ions movement between the positive (cathode) and negative (anode) electrodes. Glass fiber is currently the most extensively […]
P10.8 – Reconstructing the wood cell wall nanostructure from small-angle scattering data
Small-angle X-ray scattering (SAXS) is a versatile method to characterize the hierarchical structure of cellulosic materials under various conditions, including different moisture states. However, applying it to resolve the nanostructure of wood cell walls and other cellulosic materials requires complex data analysis, which aims to convert the scattering patterns into realistic real-space representations. Such analyses […]
10.Invited – Imaging with X-ray scattering contrast for the characterization of hierarchical material structure
Microscopy in scanning mode allows to image different contrasts from the sample, by probing not only absorption and phase contrast of the sample but for example a full X-ray fluorescence spectrum or a 2D scattering pattern. Small- and wide-angle X-ray scattering (SAXS/WAXS) imaging is in particular valuable for heterogeneous samples, in which structural elements in […]
10.Keynote – Synchrotron-Enabled Nanocellulose Research: from Basic Science to New Circular Solutions for Improving Water-Food-Infrastructural Nexus
The Hsiao group at Stony Brook has been using a wide range of synchrotron X-ray scattering and spectroscopic techniques to investigate many fundamental aspects of nanocellulose, the nanoscale aggregate of elementary cellulose microfibril (the building block of plant cells). The investigated topics included: (i) the cross-sectional shape and dimensions as well as the aggregation behavior […]
