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ABSTRACT A series of interpenetrating polymer networks (IPNs) with different compositions were prepared from silylated oligomerized soybean oil and silanol-terminated polydimethylsiloxane. Oligomerization of soybean oil was achieved by heating it with a catalyst in a Parr reactor at elevated temperatures. Vinyltrimethoxysilane was then grafted onto the oligomerized oil. Crosslinked films were obtained from solutions as the silanol groups between the two immiscible components condensed to form stable siloxanes linkages resulting in an entangled network characterized by microphase separation typical to IPNs. The crosslink density between the dispersed phase and the continuous phase was calculated from the average particle size of the dispersed phase. The mechanical and thermal properties were also studied and were found to be directly related to the composition and the crosslink density. These IPN resins can be used as high release liners, low friction materials, soft-feel coatings or as convenient one-package protective coatings. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41709. [ABSTRACT FROM AUTHOR]

A series of interpenetrating polymer networks (IPNs) with different compositions were prepared from emulsions of silylated soybean oil (SilSoy) and hydrophilic polysiloxanes (HPPS). Silylation of the soybean oil was achieved via the "Ene reaction" and the water soluble polysiloxanes were prepared by hydrolysis and condensation polymerization of 3‐aminopropyldiethoxymethylsilane followed by a reaction with ethylene carbonate. Unlike the triglyceride structure of SilSoy, HPPS are water soluble, linear polysiloxanes having a pendant hydroxyl group on every siloxane. Evaporation of the water phase from emulsions of SilSoy in aqueous solutions of HPPS yielded crosslinked IPN films composed of silanols and carbinol condensations that formed stable siloxanes (SiOSi) crosslink linkages as well as hydrolysable silicone‐carbinol (SiOC) linkages. The entangled network that was obtained is characterized by intimate mixing of these incompatible phases with a typical IPN microphase separation. The crosslink density between the dispersed phase and the continuous phase was correlated with the swell‐gel data. The mechanical and thermal properties were also studied and were correlated with the composition and the crosslinks density. These IPNs can be used as convenient environmentally degradable control release systems via the hydrolysis of the SiOC linkages. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47182. [ABSTRACT FROM AUTHOR]