2017
DOI: 10.3390/gels3030030
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Gels Obtained by Colloidal Self-Assembly of Amphiphilic Molecules

Abstract: Gelation in water-based systems can be achieved in many different ways. This review focusses on ways that are based on self-assembly, i.e., a bottom-up approach. Self-assembly naturally requires amphiphilic molecules and accordingly the systems described here are based on surfactants and to some extent also on amphiphilic copolymers. In this review we are interested in cases of low and moderate concentrations of amphiphilic material employed to form hydrogels. Self-assembly allows for various approaches to ach… Show more

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Cited by 22 publications
(14 citation statements)
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References 146 publications
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“…Gelation upon mixing amphiphilic molecules with water is a well-known phenomenon that, depending on the chemical structure of the amphiphile, can already occur at low-to-moderate concentrations as seen here for PIB 23 –IL–PEtOx 10 . Such behavior has been reported for both low-molecular-weight surfactants and amphiphilic (co)­polymers and is attributed to specific types of colloidal self-assembly, e.g., dense packing of micelles or vesicles that can bind a large volume of water or the formation of long wormlike micelles capable of entangling. , …”
Section: Results and Discussionmentioning
confidence: 75%
See 1 more Smart Citation
“…Gelation upon mixing amphiphilic molecules with water is a well-known phenomenon that, depending on the chemical structure of the amphiphile, can already occur at low-to-moderate concentrations as seen here for PIB 23 –IL–PEtOx 10 . Such behavior has been reported for both low-molecular-weight surfactants and amphiphilic (co)­polymers and is attributed to specific types of colloidal self-assembly, e.g., dense packing of micelles or vesicles that can bind a large volume of water or the formation of long wormlike micelles capable of entangling. , …”
Section: Results and Discussionmentioning
confidence: 75%
“…Such behavior has been reported for both low-molecular-weight surfactants and amphiphilic (co)polymers and is attributed to specific types of colloidal selfassembly, e.g., dense packing of micelles or vesicles that can bind a large volume of water or the formation of long wormlike micelles capable of entangling. 89,90 To gain deeper insight into the anticipated formation of selfassembled PIB−IL−PEtOx nanostructures, aqueous solutions of the amphiphilic PILs were investigated by means of transmission electron microscopy (TEM; see Figure 5). For Occasionally, even some vesicle-like structures can be found (see Figure S13).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…The structural configuration of surfactant molecules, and the presence of polar and non-polar portions, helps them to be self-assembled in an aqueous medium at a certain concentration which is termed as critical micelle concentration ( CMC ) [ 2 ]. Micelles can easily incorporate feebly soluble drugs, organic chemicals, or polymers inside their hydrophobic core and facilitate the solubility of various substances and bioavailability as well [ 3 , 4 ]. However, surfactants act as a good recipient regarding drug delivery systems.…”
Section: Introductionmentioning
confidence: 99%
“…In aqueous/non-aqueous solvent, the surfactant monomers (comprising hydrophobic and hydrophilic parts into single molecules) were orientated into an associated form after surpassing a certain concentration into the solution (solvent) and formed the associate structure, called the micelle. The corresponding concentration is symbolized as the critical micelle concentration ( cmc ) [ 3 , 4 , 5 , 6 ]. Surfactant micelles revealed a considerable role in the solubilization of several hydrophobic materials including drugs [ 3 , 7 ].…”
Section: Introductionmentioning
confidence: 99%