Engineering single-polymer micelle shape using non-uniform spontaneous surface curvature [PDF]
Phys. Rev. E 97, 032505 (2018), 2017 Conventional micelles, composed of simple amphiphiles, exhibit only a few standard morphologies, each characterized by its mean surface curvature set by the amphiphiles. Here we demonstrate a rational design scheme to construct micelles of more general shape from polymeric amphiphiles.
arxiv +1 more source
Analytical modeling of micelle growth. 2. Molecular thermodynamics of mixed aggregates and scission energy in wormlike micelles [PDF]
Journal of Colloid and Interface Science 2019, 2019 Hypotheses: Quantitative molecular-thermodynamic theory of the growth of giant wormlike micelles in mixed nonionic surfactant solutions can be developed on the basis of a generalized model, which includes the classical phase separation and mass action models as special cases.
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Dynamics and Scission of Rodlike Cationic Surfactant Micelles in Shear Flow [PDF]
, 2014 Flow-induced configuration dynamics and scission of rodlike micelles are studied for the first time using molecular dynamics simulations in presence of explicit solvent and salt. Predicted dependence of tumbling frequency and orientation distribution on shear rate S agrees with mesoscopic theories.
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How ill-defined constituents produce well-defined nanoparticles: Effect of polymer dispersity on the uniformity of copolymeric micelles [PDF]
, 2019 We investigate the effect of polymer length dispersity on the properties of self-assembled micelles in solution by self-consistent field calculations. Polydispersity stabilizes micelles by raising the free energy barriers of micelle formation and dissolution. Most importantly, it significantly reduces the size fluctuations of micelles: Block copolymers
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Nuclear Magnetic Resonance Diffusometry of Linear and Branched Wormlike Micelles [PDF]
arXiv, 2021 Diffusion studies using nuclear magnetic resonance (NMR) spectroscopy were conducted on two model surfactant solutions of cetyltrimethylammonium bromide/sodium salicylate (CTAB/NaSal) and cetylpyridinium chloride/sodium salicylate (CPCl/NaSal). By increasing the salt-to-surfactant concentration ratio, these systems display two peaks in the zero-shear ...
arxiv
Non-equilibrium effects of micelle formation as studied by a minimum particle-based model [PDF]
, 2019 The formation of self assembled structures such as micelles has been intensively studied and is well understood. The ability of a solution of amphiphilic molecules to develop micelles is depending on the concentration and characterized by the critical micelle concentration (cmc), above which micelle formation does occur.
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Feasibility of rational shape design of single-polymer micelle using spontaneous surface curvature [PDF]
arXiv, 2018 Polymeric micelles are used in a variety of applications, with the micelle's shape often playing an important role. Consequently, a scheme to design micelles of arbitrary shape is desirable. In this paper, we consider micelles formed from a single, linear, multiblock copolymer, and we study how easily the micelle's shape can be controlled by altering ...
arxiv
Shape of Mixed Micelles: Cylinders or Spheres? Theoretical Analysis [PDF]
J. Phys. Chem. B 101, 6600-6606 (1997), 1998 We develop a theoretical model for the solubilization of phospholipid bilayers by micelle-forming surfactants. Cylindrical micelles, disc-like micelles and spherical micelles are considered as alternative resultant structures. The main question addressed is what kind of micelles can be expected under various thermodynamical conditions.
arxiv
Parametric Equations of the Theory of Formation of Spherical Micelles [PDF]
arXiv, 2001 Using the notion of aggregation work, we construct a system of differential equations for the aggregation number of micelles which is a function of the parameters of micellization (parametric equations). There are explicit solutions for two important models of spherical micelles.
arxiv
Micelle Formation and the Hydrophobic Effect [PDF]
J. Phys. Chem. B 108, 6778 (2004), 2004 The tendency of amphiphilic molecules to form micelles in aqueous solution is a consequence of the hydrophobic effect. The fundamental difference between micelle assembly and macroscopic phase separation is the stoichiometric constraint that frustrates the demixing of polar and hydrophobic groups.
arxiv