Hierarchical structure of microbial cellulose and marvelous water uptake, investigated by combining neutron scattering instruments at research reactor JRR-3, Tokai

Koizumi, Satoshi; Zhao, Yue; Putra, Ananda

doi:10.1016/j.polymer.2019.05.022

Cited by 3 publications

(2 citation statements)

References 49 publications

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“…Investigation of the hierarchy within the bacterium body and the local non-crystalline structure by SANS and USANS allowed by polarization analyses revealed a domination of capillarity, linked to hierarchically preserved non-crystalline domains, in the water uptake mechanism. In contrast, as a benchmark, the high-water absorption observed in PNIPAm gels is associated with a tight hydration mechanism onto a monomer unit through hydrogen bonds [ 72 ]. Raghuwanshi and co-authors [ 73 ] investigated dissolution of cellulose in ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIMAc) by contrast variation SANS in combination with SAXS method.…”

Section: Application Of Small Angle Neutron Scattering On Nanostructu...mentioning

confidence: 99%

Advances in Small Angle Neutron Scattering on Polysaccharide Materials

Fanova,

Sotiropoulos,

Radulescu

et al. 2024

Polymers

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Polysaccharide materials and biomaterials gain the focus of intense research owing to their great versatility in chemical structures and modification possibilities, as well as their biocompatibility, degradability, and sustainability features. This review focuses on the recent advances in the application of SANS on polysaccharide systems covering a broad range of materials such as nanoparticulate assemblies, hydrogels, nanocomposites, and plant-originating nanostructured systems. It motivates the use of SANS in its full potential by demonstrating the features of contrast variation and contrast matching methods and by reporting the methodologies for data analysis and interpretation. As these soft matter systems may be organized in multiple length scales depending on the interactions and chemical bonds between their components, SANS offers exceptional and unique opportunities for advanced characterization and optimization of new nanostructured polysaccharide materials.

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Section: Application Of Small Angle Neutron Scattering On Nanostructu...mentioning

confidence: 99%

Advances in Small Angle Neutron Scattering on Polysaccharide Materials

Fanova,

Sotiropoulos,

Radulescu

et al. 2024

Polymers

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“…The focusing method is standard as an option on pin-hole SANS instruments all over the world [11][12][13][14][15][16]. Hierarchical structures, appearing in various types of soft matter, have been explored by combining SANS and USANS instruments at the JRR-3 reactor, Japan [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Advanced Small-Angle Scattering Instrument Available in the Tokyo Area. Time-Of-Flight, Small-Angle Neutron Scattering Developed on the iMATERIA Diffractometer at the High Intensity Pulsed Neutron Source J-PARC

Koizumi

Noda

Maeda

et al. 2020

QuBS

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A method of time-of-flight, small-angle neutron scattering (TOF-SANS) has been developed based on the iMATERIA powder diffractometer at BL20, of the Materials and Life Sciences Facility (MLF) at the high-intensity proton accelerator (J-PARC). A large-area detector for SANS, which is composed of triple-layered 3He tube detectors, has a hole at its center in order to release a direct beam behind and to detect ultra-small-angle scattering. As a result, the pulsed-neutron TOF method enables us to perform multiscale observations covering 0.003 < q (Å−1) < 40 (qmax/qmix = 1.3 × 104) and to determine the static structure factor S(q) and/or form factor P(q) under real-time and in-situ conditions. Our challenge, using unique sample accessories of a super-conducting magnet and polarized neutron, is dynamic nuclear polarization (DNP) for contrast variation, especially for industrial use. To reinforce conventional SANS measurements with powder materials, grazing-incidence small-angle neutron scattering (GISANS) or reflectivity is also available on the iMATERIA instrument.

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