A5100440667- Material Dynamics and Properties
- Advanced Cellulose Research Studies
- Aerogels and thermal insulation
- Energetic Materials and Combustion
- Surface Modification and Superhydrophobicity
- High-Velocity Impact and Material Behavior
- Structural Response to Dynamic Loads
- Electrospun Nanofibers in Biomedical Applications
- Ionic liquids properties and applications
- Advanced Sensor and Energy Harvesting Materials
- Glass properties and applications
- Polysaccharides and Plant Cell Walls
- Thermodynamic properties of mixtures
- High-pressure geophysics and materials
- Silicone and Siloxane Chemistry
- nanoparticles nucleation surface interactions
- Vibration Control and Rheological Fluids
- Catalysis and Oxidation Reactions
- Climate change and permafrost
- Ultrasound and Cavitation Phenomena
- Lignin and Wood Chemistry
- Soil and Unsaturated Flow
- Thermal properties of materials
- Nanocomposite Films for Food Packaging
- Tree-ring climate responses
Dalian University of Technology
2022-2025
Dalian University
2023-2025
Max Planck Institute for Polymer Research
2016-2025
KTH Royal Institute of Technology
2020-2024
Tianjin University of Science and Technology
2024
Chang'an University
2024
Beihang University
2024
Stockholm University
2021-2023
AlbaNova
2021-2023
Jilin University of Chemical Technology
2023
The macro- and microstructural evolution of water swollen ethanol regenerated cellulose gel beads have been determined during drying by optical microscopy combined with analytical balance measurements, small-angle X-ray scattering (SAXS), wide-angle (WAXS). Two characteristic length scales, which are related to the molecular dimension monomer elongated aggregates these monomers, could be identified for both types SAXS. For beads, only small changes structures were detected in SAXS WAXS...
Bioderived polysaccharide-based cryogels prepared via freeze-casting method not only mimic the highly aligned anisotropic pore structure of plant stems but also offer other benefits as compared to biological structures, such lower density, higher porosity, better permeability, and thermal conductivity. However, application polysaccharide fabricate multifunctional composites is still at its infancy. In this study, a novel class optically transparent pectin/poly(methyl methacrylate) (PMMA)...
Effective use of sound absorption materials is the main way to reduce noise pollution, which constitutes a major environmental and health problem. However, currently used porous cause not only pollution but their usage also potential risk. Here, we demonstrate facile strategy create environmental-friendly non-toxic lightweight pectin-based cryogels with hierarchically anisotropic structure, integrates small pores on walls lamellar pores, via freeze-casting method. The fabricated pectin have...
Although the unique structure of helicenes resembles molecular springs, effects their extension-contraction cycles on properties have rarely been explored. Here, we investigated fluorescence two π-extended [n]helicenes with different helical lengths n, named [7] and [9], under high pressures in a diamond anvil cell. The experimental results showed that compound longer length, exhibited more sensitive response than both crystalline solvated states upon compression. Theoretical calculations...
A common feature of ionic liquids composed cations with long aliphatic side chains is structural heterogeneities on the nanometer length scale. This so-called microphase separation arises from clustering moieties. The temperature dependence liquid bulk structure was studied by small-angle X-ray and neutron scattering for a set methylimidazolium ([C18C1im]+, [C22C1im]+) based tris(pentafluoroethyl)trifluorophosphate ([FAP]-), bis(trifluoromethylsulfonyl)imide ([NTf2]-),...
The drying behavior of regenerated cellulose gel beads swollen with different nonsolvents (
Surface induced smectic order has been observed in the ionic liquid [C<sub>22</sub>C<sub>1</sub>im]<sup>+</sup>[NTf<sub>2</sub>] over an extremely wide temperature range of 88 K.
The molecular-scale structure and dynamics of confined liquids has increasingly gained relevance for applications in nanotechnology. Thus, a detailed knowledge the on molecular length scales is great interest fundamental applied sciences. To study structures under dynamic conditions, we constructed an situ X-ray surface forces apparatus (X-SFA). This novel device can create precisely controlled slit-pore confinement down to dimensions 10 nm scale by using cylinder-on-flat geometry first...
We present a quantitative description of ice premelting in permafrost model systems. Experimental data on the interfacial ice/clay nano composites was obtained by high energy X-ray diffraction.
Interactions between dry cellulose were studied using model systems, beads, and films, custom-built contact adhesion testing equipment. Depending on the configuration of substrates in contact, Polydimethylsiloxane (PDMS) film, films spin-coated either PDMS or glass, interaction shows three distinct processes. Firstly, molecular interlocking is formed when there a soft thin film backing film. Secondly, without backing, no initial attraction force surfaces observed. Thirdly, significant...
The nano- to microscale structures at the interface between materials can define macroscopic material properties. These are extremely difficult investigate for complex systems, such as cellulose-rich materials. development of new model cellulose and measuring techniques has opened possibilities resolve this problem. We present a straightforward approach combining micro-focusing grazing-incidence small-angle X-ray scattering atomic force microscopy (AFM) structural rearrangements...
Lignin is a significant byproduct from the pulp and paper industry. However, conversion of lignin to resource with added value plagued by expensive processing. Here we report that syringyl units (S) sodium lignosulfonate (LS) exhibit phosphorescence in water lifetime ∼2 ms can be prolonged up ∼618 encapsulation Ca3(PO4)2 due formation H-type dimers S ([email protected]3(PO4)2). Motivated this, develop afterglow through situ generation [email protected]3(PO4)2 matrix. The emission sensitive...
High-density (HDA) and low-density amorphous ices (LDA) are believed to be counterparts of the high- liquid phases water, respectively. In order better understand how vibrational modes change during transition between two solid states, we present infrared spectroscopy measurements, following decoupled OD-stretch (
At solid/ice interfaces, a premelting layer is formed at temperatures below the melting point of bulk water. However, structural and dynamic properties within have been topic intense debate. Herein, we determined translational diffusion coefficient Dt water in ice/clay nanocomposites serving as model systems for permafrost by quasi-elastic neutron scattering. Below point, rapid decrease found charged hydrophilic vermiculite, uncharged kaolin, more hydrophobic talc, reaching plateau values -4...
Soil structure and overconsolidation are two important factors that affect soil strength. Current research studies have primarily focused on the influence of single factors, relatively few studied coupling effect two. In this paper, effects mechanical properties loess under certain conditions been by compression tests direct shear tests. Undisturbed loess, remolded overconsolidated undisturbed were investigated in work. The results indicate can enhance overall strength soil, but these also...
The emergence of stretchable electronic technology has led to the development many industries and facilitated unprecedented applications, owing its ability bear various deformations. However, conventional solid elastomer substrates encapsulation can severely restrict free motion deformation patterned interconnects, leading potential mechanical failures electrical breakdowns. To address this issue, we propose a design strategy porous substrate improve stretchability serpentine interconnects...
The salt-induced microheterogeneity (MH) formation in binary liquid mixtures is studied by small-angle x-ray scattering (SAXS) and state theory. Previous experiments have shown that this phenomenon occurs for antagonistic salts, whose cations anions prefer different components of the solvent mixture. However, so far precise mechanism leading to characteristic length scale MHs has remained unclear. Here, it can be generated competition short-ranged interactions long-ranged monopole-dipole...