Characteristics of monolayer behavior and multilayer film structures of comb polymers having different kinds of fluorocarbon side-chains

Fujimori, Atsuhiro; Nakahara, Hiroyuki; Ito, Eisuke; Hara, Masahiko; Kanai, Kaname; Ouchi, Yukio; Seki, Kazuhiko

doi:10.1016/j.jcis.2004.05.034

Cited by 6 publications

(2 citation statements)

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“…If the o-position of the side chain contains an F atom instead of an H atom, the orientation and packing properties of the fluorocarbon chain are modified. 121 An analogous effect is obtained by changing the a-methyl group located on the polymer main chain. Even the spreading solvent has an influence on the monolayer morphology.…”

Section: Fluorinated Polymer Blendsmentioning

confidence: 89%

“…Even the spreading solvent has an influence on the monolayer morphology. 121 Other approaches to the preparation of stable, transferable fluorinated films are based on the use of poly(N-alkylacrylamide)s, functionalised in various ways. 122 Their capability to form a hydrogen bonded network between polymer backbones suggests that a good direction for future investigation in the field might be based on a combined approach, where two polymers are designed so that their repulsive interaction arises from both the hydrophobic moieties (lipophobic-fluorophobic interactions) and the hydrophilic ones (self-recognition through hydrogen-bonding present on only one component in the binary mixture).…”

Section: Fluorinated Polymer Blendsmentioning

confidence: 99%

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Colloids in Flatland: a perspective on 2D phase-separated systems, characterisation methods, and lineactant design

et al. 2013

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In 1861 Thomas Graham gave birth to a new field of science, today known as colloid science. Nowadays, the notion "colloid" is often used referring to systems consisting of two immiscible phases, one of which is finely dispersed into the other. Research on colloids deals mostly with sols (solids dispersed in a liquid), emulsions (liquids dispersed in liquid), and foams (gas dispersed in a liquid). Because the dispersed particles are small, there is a lot of interface per unit mass. Not surprisingly, therefore, the properties of the interface have often a decisive effect on the behaviour of colloids. Water-air interfaces have a special relevance in this field: many water-insoluble molecules can be spread on water and, given the right spreading conditions and enough available surface area, their spreading proceeds until a monolayer (a one-molecule thick layer) eventually remains. Several 2D phases have been identified for such monolayers, like "gas", "liquid expanded", "liquid condensed", and "solid". The central question of this review is whether these 2D phases can also exist as colloidal systems, and what stabilizes the dispersed state in such systems. We shall present several systems capable of yielding 2D phase separation, from those based on either natural or fluorinated amphiphiles, to polymer-based ones. We shall seek for analogies in 3D and we shall try to clarify if the lines between these 2D objects play a similar role as the interfaces between 3D colloidal systems. In particular, we shall consider the special role of molecules that tend to accumulate at the phase boundaries, that is, at the contact lines, which will therefore be denoted "line-actants" (molecules that adsorb at a 1D interface, separating two 2D colloidal entities), by analogy to the term "surfactant" (which indicates a molecule that adsorbs at a 2D interface separating two 3D colloidal entities).

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Section: Fluorinated Polymer Blendsmentioning

confidence: 89%

Section: Fluorinated Polymer Blendsmentioning

confidence: 99%