Grafted polyelectrolyte coatings on aluminum surface for hydrophilic properties control

Abstract

Grafted polyelectrolyte coatings were obtained by surface initiated atom transfer radical poly merization on an aluminum surface. Their chemical composition was verified by X ray photoelectron spec troscopy and Fourier transfer infrared spectroscopy. The morphology of grafted polymer coatings on an alu minium surface was studied by atomic force and scanning electron microscopy and the possibility of adjust ing its hydrophilic properties in wide range was established.

Control of the wettability of the aluminum surface by its modification with grafted block copolymers based on N-isopropylacrylamide

“…Treatment of aluminum with an alkali solution, followed by the interaction with water, leads to the formation of amphoteric hydroxy groups on the surface [9]. To create additional active sites, we suggest immobilization of anchor compounds containing amino groups, 3-aminopropyltrimethoxysilane (APTS) and 3-aminopropane-1-phosphonic acid (APPA), on the surface of hydroxylated aluminum.…”

“…Hydroxylation of the aluminum surface was performed according to [9]. Then, the hydroxylated aluminum samples were placed for 6 h in a 0.1 M solution of 3-aminopropyltrimethoxysilane (APTS) in dry toluene at 60°С.…”

“…Previously we demonstrated pathways for modifi cation of the aluminum surface with grafted polymers for controlling its lyophilic properties [7][8][9]. However, the problem of preparing stable adaptive polymeric coatings [10][11][12] ensuring control of the surface properties at repeated cyclic changes of the external conditions without degradation of functional properties of the polymer remains topical.…”