Tuning Polymer-Grafted Particle Monolayer Structure at the Air-Water Interface by Introducing Anisotropic Features

Abstract

Fabrication of anisotropic material is one of the important topics and we examined to introduce "anisotropic" nature by spreading polymer-grafted particle on the medium with polymer-reactive potential. Poly (tert-butyl methacrylate) (PtBMA) was polymerized from polystyrene latex (PSL) surface by ATRP to give PtBMA-grafted PSL (PSL-PtBMA). Particle monolayer was formed at air-water and air-acidic water interfaces and the monolayer characteristics were compared by π-A isotherm measurements, SEM observations, and contact angle measurements. π-A isotherms, in particular, indicates that the interaction between polymer chains become stronger by changing the subphase condition, which suggests that anisotropicparticle monolayer formation.

Polymeric Surfactants: Recent Advancement in Their Synthesis, Properties, and Industrial Applications

“…[94] Poly (tert-butyl (meth)acrylate is the precursor of excellent such systems that are easily hydrolysable to the corresponding acid through deprotection reaction. Standard conditions involve the use of CF 3 COOH acid in CH 2 Cl 2 , [95,96] HCl in refluxing dioxane/ water, [97] and p-CH 3 C 6 H 4 SO 3 H in refluxing C 6 H 5 CH 3 . [98] The hydrolysis is generally accomplished as well as highly selective, specifically in TFA case, that is conducted in mild circumstances, However, in case of HCl/ dioxane, preferential hydrolysis of the other highly active groups takes place, for instance, the butyl ester group when PBA consisting copolymers are used.…”

“…[95] In many studies the reactions were carried out in water or water/isopropanol systems at basic pH. [96] For instance, Hydroxyethylcellulose [97] was first activated with hydrophobic groups through reacting hydroxyl functional entities with an epoxide or an organic halogenide in the presence of a strong base. Although the extent of substitution reached at max up to 25% weight percentage but when the substitution of polymer overlapped more than 10% the polymer became water insoluble.…”