Supporting Information

Core/shell emulsion micro- and nanocontainers for self-protecting water based

coatings

Dmitry Grigorieva*, Elena Shchukinab, Aiym Tleuovac, Saule Aidarovac and Dmitry Shchukinb

aMax Planck Institute of Colloids and Interfaces, Am Muehlenberg, 14476 Potsdam, Germany

bUniversity of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom

cInternational Postgraduate Institute “Excellence PolyTech” of Kazakh National Technical

University, Satpaev Street 22, 050013 Almaty, Kazakhstan

*E-mail: dmitry.grigoriev@mpikg.mpg.de

S1. Distribution of micro- and nanocontainers in the matrix of organic coatings

Figure S1. Distribution of PUa micro- and nanocontainers loaded with the corrosion inhibitor MeBT in the matrix of coating on the basis of the waterborne styrene acrylic copolymer emulsion.

S2. Preparation of PUa containers loaded with the corrosion inhibitor 8HQ.In the first step, the oil phase is prepared by the mixing together 2.7 ml of prepolymer Poly[phenyl isocyanate)-co-formaldehyde], 4.4 ml 35 wt% 8HQ solution in MeTHF and 0.4 ml n-hexadecane.As first aqueous phase 75 ml of 2.5 wt% PVA solution was used. The second aqueous phase was prepared on the basis of the same amount of the first aqueous phase by the dissolution in the latter 7.5 g carbamide and 1.5 g TEPA. After emulsification of oil phase in the first aqueous phase by means of Ultra-Turrax high-speed homogenizer (3 minutes, 17000 rpm), it was dropwise added to the second aqueous phase under continuous moderate stirring (magnet stirrer). After completion of this step, the resulting mixture was further stirred for at least 15 minutes and then left to stay overnight without stirring until finishing the polyaddition reaction. In case of DEPh as an auxiliary solvent, the ratios between oil and both aqueous phases were the same but the oil phase was prepared from 2.7 ml of prepolymer Poly[phenyl isocyanate)-co-formaldehyde], 4.4 ml 15 wt% 8HQ solution in DEPh and 0.4 ml n-hexadecane.

S2

S3. Results of EIS measurements

Figure S3. Bode plots of EIS data for the conventional coating on the basis of short oil modified alkyd resin (solid symbols) and the same coating with embedded (5 wt%) PUa microcontainers loaded with 8HQ (empty symbols).

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