Title: Study of nanostructure of polymer adsorption layers on the particles surface of titanium dioxide

Authors: N.A. Bulychev; A.V. Ivanov

Addresses: P.N. Lebedev Physical Institute, Russian Academy of Sciences, Leninsky Avenue, 53, Moscow, 119991, Russia; Moscow Aviation Institute, National Research University, Volokolamskoe shosse, 4, Moscow, 125993, Russia ' N.N. Blokhin National Medical Research Center of Oncology, Russian Ministry of Health, Kashirskoe shosse, 24, 115478, Moscow, Russia; O.K. Skobelkin State Scientific Center of Laser medicine FMBA, Studencheskaya, 40, Moscow, 121165, Russia

Abstract: The surface modification of titanium dioxide in aqueous dispersions of specially tailor-made periodic acrylic acid/isobutylene copolymers, poly(acrylic acid)/polystyrene graft copolymers, and hydrophobically modified polyethyleneoxide urethane by ultrasonic treatment was studied. The pigment surface modification by the above copolymers was comparatively investigated regarding conventional adsorption as contrasted to an ultrasonic treatment assisted procedure. The course and efficiency of the polymer adsorption onto the pigment surface was quantified by electrokinetic sonic amplitude measurements. The higher efficiency of the pigment surface coating by the copolymers as achieved by ultrasonic treatment varies with the copolymer architecture and is a consequence of ultrasonically induced pigment surface activation.

Keywords: polymer adsorption; surface; titanium dioxide; suspension; ultrasonic treatment; adsorption layer; layer thickness; electrokinetic sonic amplitude; surface active polymers; macromolecular conformation.

DOI: 10.1504/IJNT.2019.106611

International Journal of Nanotechnology, 2019 Vol.16 No.6/7/8/9/10, pp.356 - 365

Published online: 15 Apr 2020 *

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