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Related Concept Videos

Sugars as Energy Storage Molecules01:10

Sugars as Energy Storage Molecules

Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
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Glucose Absorption Into the Small Intestine

Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form such as glucose or galactose. These monosaccharides are then transported across the intestinal membrane and into the blood via transcellular transport. The intestinal epithelial cells allow the movement of these monosaccharides with a defined 'entry' through membrane transporter proteins present on their apical membrane and 'exit' via the...
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Sugars as Energy Storage Molecules01:10

Sugars as Energy Storage Molecules

Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
Carbonation Shrinkage01:24

Carbonation Shrinkage

Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction facilitates the...

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Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
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Advances in Small Angle Neutron Scattering on Polysaccharide Materials.

Anastasiia Fanova1, Konstantinos Sotiropoulos2, Aurel Radulescu1

  • 1Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstraße 1, 85747 Garching, Germany.

Polymers
|February 24, 2024
PubMed
Summary

Small-angle neutron scattering (SANS) is a powerful tool for characterizing versatile polysaccharide biomaterials. This review highlights SANS applications in hydrogels, nanocomposites, and nanostructured systems for advanced material optimization.

Keywords:
biopolymerscontrast variationhierarchyproteinssmall angle scattering

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Area of Science:

  • Materials Science and Engineering
  • Biomaterials Science
  • Polymer Chemistry

Background:

  • Polysaccharide materials are extensively researched due to their versatile structures, modification potential, biocompatibility, degradability, and sustainability.
  • These soft matter systems exhibit complex organization across multiple length scales, driven by component interactions and chemical bonding.

Purpose of the Study:

  • To review recent advancements in applying Small-Angle Neutron Scattering (SANS) to various polysaccharide systems.
  • To demonstrate the potential of SANS techniques, including contrast variation and matching, for characterizing nanostructured polysaccharide materials.
  • To provide methodologies for SANS data analysis and interpretation in the context of polysaccharide soft matter.

Main Methods:

  • Review of recent literature on SANS applications in polysaccharide systems.
  • Explanation of contrast variation and contrast matching methods for SANS.
  • Discussion of data analysis and interpretation strategies for SANS experiments on polysaccharide soft matter.

Main Results:

  • SANS has been successfully applied to diverse polysaccharide systems, including nanoparticulate assemblies, hydrogels, nanocomposites, and plant-originating nanostructured systems.
  • The review details how SANS provides unique insights into the structural organization and properties of these materials at various length scales.
  • Effective methodologies for SANS data analysis and interpretation are presented, enabling deeper understanding of polysaccharide soft matter.

Conclusions:

  • Small-Angle Neutron Scattering (SANS) is an exceptional technique for the advanced characterization and optimization of novel nanostructured polysaccharide materials.
  • Leveraging SANS, particularly with contrast variation and matching, unlocks significant potential for developing advanced polysaccharide-based biomaterials.
  • The review underscores the importance of SANS in understanding the multi-length scale organization of polysaccharide soft matter for future material design.