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Related Concept Videos

Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Two-dimensional Gel Electrophoresis01:22

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Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
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Ion-Exchange Chromatography01:09

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Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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Related Experiment Video

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Thermal Scanning Conductometry TSC as a General Method for Studying and Controlling the Phase Behavior of Conductive Physical Gels
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Inorganic/Organic Double-Network Gels Containing Ionic Liquids.

Eiji Kamio1, Tomoki Yasui1, Yu Iida1

  • 1Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan.

Advanced Materials (Deerfield Beach, Fla.)
|November 9, 2017
PubMed
Summary

Highly robust double-network (DN) ion gels, containing 80% ionic liquids (ILs), exhibit exceptional mechanical strength and self-recovery. These ion gels are fabricated using a simple one-pot synthesis of inorganic and organic networks.

Keywords:
double networkinorganic/organic compositesionic liquidsrobust gelsselective network formation

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Ion gels are promising materials for various applications due to their unique properties.
  • Developing ion gels with enhanced mechanical strength and self-healing capabilities remains a challenge.

Purpose of the Study:

  • To fabricate highly robust ion gels with superior mechanical properties and self-recovery.
  • To investigate the structure-property relationships in double-network (DN) ion gels.

Main Methods:

  • Fabrication of DN ion gels via a one-pot synthesis involving interpenetrating inorganic (silica nanoparticles) and organic (polydimethylacrylamide) networks.
  • Incorporation of a high content (80 wt%) of ionic liquids (ILs).
  • Characterization of mechanical properties (compressive fracture stress) and self-recovery behavior.

Main Results:

  • The fabricated DN ion gels demonstrated extraordinary mechanical strength, with a compressive fracture stress exceeding 28 MPa.
  • The unique network structure, featuring brittle silica nanoparticles as sacrificial bonds and a ductile PDMAAm network, contributes to energy dissipation.
  • The DN ion gels exhibited significant self-recovery upon annealing due to the reversible physical bonding of silica particles.

Conclusions:

  • Double-network ion gels with high ionic liquid content can achieve remarkable mechanical robustness and self-healing properties.
  • The one-pot synthesis offers a facile and shape-free method for preparing these advanced ion gels.
  • The designed architecture of DN ion gels holds potential for applications requiring durable and resilient soft materials.