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Related Concept Videos

Surface Active Agents01:27

Surface Active Agents

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Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
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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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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
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Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
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Related Experiment Video

Updated: Mar 23, 2026

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
07:32

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Zwitterionic materials for antifouling membrane surface construction.

Mingrui He1, Kang Gao1, Linjie Zhou1

  • 1Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.

Acta Biomaterialia
|March 31, 2016
PubMed
Summary
This summary is machine-generated.

Zwitterionic materials offer superior antifouling properties for membranes, inspired by cell membranes. This review details their mechanisms and incorporation methods for advanced membrane separation technologies.

Keywords:
Antifouling membrane surfacesBiomimetic adhesionSurface graftingSurface segregationZwitterionic materials

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Biotechnology

Background:

  • Membrane fouling significantly hinders membrane separation processes.
  • Surface properties are crucial for membrane antifouling performance.
  • Zwitterionic modification is a key strategy for developing antifouling membranes.

Purpose of the Study:

  • To review antifouling mechanisms of zwitterionic materials.
  • To discuss biomimetic prototypes in cell membranes.
  • To survey methods for incorporating zwitterionic materials onto membrane surfaces.

Main Methods:

  • Surface grafting
  • Surface segregation
  • Biomimetic adhesion
  • Surface coating

Main Results:

  • Zwitterionic materials exhibit excellent antifouling properties.
  • Cell membrane biomimetics provide insights into antifouling mechanisms.
  • Various methods effectively incorporate zwitterionic materials onto membranes.

Conclusions:

  • Zwitterionic modification is a promising approach for antifouling membranes.
  • Understanding mechanisms and incorporation methods is vital.
  • Future research directions for zwitterionic antifouling membranes are proposed.