@article{rutkevicius_pirzada_geiger_khan_2021, title={Creating superhydrophobic, abrasion-resistant and breathable coatings from water-borne polydimethylsiloxane-polyurethane Co-polymer and fumed silica}, volume={596}, ISSN={["1095-7103"]}, url={https://doi.org/10.1016/j.jcis.2021.02.072}, DOI={10.1016/j.jcis.2021.02.072}, abstractNote={The high surface area and branched structure of fumed silica (FS) can be exploited in concert with the hydrophobic properties of polydimethylsiloxane (PDMS) and robustness of polyurethane (PU) to create PDMS-PU and FS grafted coatings with hierarchical structures and enhanced functionalities. The structural features of FS would add to superhydrophobicity; its open-branchlike characteristics would provide air permeability; the use of a tiered coating approach involving a FS-only layer on top of the PDMS-PU coat would create interlocking and strong abrasion-resistance, leading to a multifunctional coating with potential application in filtration and personal protection equipment (PPE). PDMS-PU and PDMS-PU-Si copolymer dispersions are synthesized with different monomer molecular weights and FS concentration. Hydrophobicity is measured via water contact angle and wetting resistance measurements. Abrasion resistance is compared by investigating the fiber morphology and hydrophobicity of the coated fabrics after various abrasion cycles. Air flow versus pressure drop experiments are used to measure breathability. Interaction mechanism between substrate/components are explored using infrared spectroscopy. The interactions between the substrate, FS, and PDMS-PU can be manipulated to create a novel, tiered coating that exhibits superhydrophobicity, strong abrasion resistance together with desirable air-permeability, thereby providing a versatile and unique coating platform.}, journal={JOURNAL OF COLLOID AND INTERFACE SCIENCE}, publisher={Elsevier BV}, author={Rutkevicius, Marius and Pirzada, Tahira and Geiger, Mackenzie and Khan, Saad A.}, year={2021}, month={Aug}, pages={479–492} }
 @article{thompson_rutkevicius_horozov_stoyanov_paunov_2018, title={Smart soaps: stimulus responsive soap-hydrogel bead composites for controlled dissolution and release of actives}, volume={2}, ISSN={["2052-1537"]}, DOI={10.1039/c7qm00556c}, abstractNote={We designed soap–hydrogel bead composites which have lower environmental impact and allow control of the both dissolution and the release rate of encapsulated active components.}, number={2}, journal={MATERIALS CHEMISTRY FRONTIERS}, author={Thompson, Benjamin R. and Rutkevicius, Marius and Horozov, Tommy S. and Stoyanov, Simeon D. and Paunov, Vesselin N.}, year={2018}, month={Feb}, pages={402–409} }
 @article{rutkevicius_allred_velev_velikov_2018, title={Stabilization of oil continuous emulsions with colloidal particles from water-insoluble plant proteins}, volume={82}, ISSN={["1873-7137"]}, DOI={10.1016/j.foodhyd.2018.04.004}, abstractNote={Emulsions stabilized by surface active particles are becoming an attractive alternative to conventional surfactant-stabilized emulsions. Biobased, environmentally friendly, and edible particles are particularly interesting for applications in foods, agriculture, and consumer products. Previously, water insoluble proteins such as prolamins have been only used as a platform for stabilization of water continuous emulsions. In this paper, we investigate the ability of zein particles to stabilize oil continuous emulsions. We synthesized and used zein particles in the form of (i) an aqueous, or (ii) an oil suspension. Aqueous suspensions of zein particles resulted in water-in-oil (w/o) emulsions that were generally stable for more than an hour, with up to 30 vol% water as the dispersed phase. Cryo-SEM images show that only a small fraction of zein particles are adsorbed at the oil-water interface as Pickering stabilizers. Adding an oil soluble surfactant (lecithin) prior to emulsification with zein particles in an aqueous suspension promoted the formation of oil-continuous emulsion with phase inversion point at 40 vol% of water. Zein particles suspended in oil produced less stable emulsions, which showed reversible phase inversion attributed to the electrostatic repulsion of hydrophilic protein loops above their isoelectric point. Our results show that zein particles act as a predominantly hydrophilic stabilizer that requires control prior to emulsification to form w/o emulsions. These emulsions, however, have only a limited stability.}, journal={FOOD HYDROCOLLOIDS}, author={Rutkevicius, Marius and Allred, Samuel and Velev, Orlin D. and Velikov, Krassimir P.}, year={2018}, month={Sep}, pages={89–95} }