@article{stoforos_rezaei_simunovic_sandeep_2021, title={Enhancement of continuous flow cooling using hydrophobic surface treatment}, volume={300}, ISSN={["1873-5770"]}, url={https://doi.org/10.1016/j.jfoodeng.2021.110524}, DOI={10.1016/j.jfoodeng.2021.110524}, abstractNote={This study examined the effect of hydrophobic-surface treatment of tubular heat exchangers on cooling of viscous foods, namely sweet potato puree, banana puree, and cheese sauce. For the foods tested, cooling efficiency was compared between two identical tube-in-tube stainless-steel heat exchangers either untreated or treated with a hydrophobic chemical coating, Aculon. The average overall heat transfer coefficient, U, was calculated and compared between the two heat exchangers. Cooling of banana puree was improved when using the Aculon-treated heat exchanger, revealing a U of 115 W/(m2·K) compared to 105 W/(m2·K) for the untreated heat exchanger. Cheese sauce cooling was influenced the most, with a U value of 187 W/(m2·K) for the Aculon-treated heat exchanger, compared to 133 W/(m2·K) for the untreated case. Finally, Aculon-treatment showed no difference in the cooling of sweet potato puree, with U of 193 W/(m2·K) and 195 W/(m2·K) for the untreated and the Aculon-treated heat exchangers, respectively.}, journal={JOURNAL OF FOOD ENGINEERING}, author={Stoforos, George N. and Rezaei, Farzad and Simunovic, Josip and Sandeep, K. P.}, year={2021}, month={Jul} }
 @article{rezaei_dickey_hauser_2019, title={Corrosion resistant coating based on thiol-ene polymeric system}, volume={133}, ISSN={["0300-9440"]}, DOI={10.1016/j.porgcoat.2019.04.073}, abstractNote={This study presents a method of preparation of corrosion resistant thin organic coatings. This thin organic coating is designed to protect a stack of several thin inorganic (metallic and oxide) layers that have low infrared emissivity and are sputter deposited on top of a flexible polyethylene terephthalate (PET) substrate. It is argued that, in contact with an acidic environment, the most sensitive material in this stack is indium tin oxide. The proposed protective organic coating consists of a crosslinkable thiol-ene network, a low surface energy fluorinated compound and a silane adhesion promoter cured under exposure to an ultra-violet light source. The results show that such the optimized organic precursor can lead to thin polymeric coating that can successfully protect the sensitive substrate yet does not have a detrimental interference with its low emissivity.}, journal={PROGRESS IN ORGANIC COATINGS}, author={Rezaei, Farzad and Dickey, Michael D. and Hauser, Peter J.}, year={2019}, month={Aug}, pages={350–356} }
 @article{rezaei_talley_dickey_hauser_2018, title={Superhydrophobic/oleophobic coatings based on a catalyst driven thiol-epoxy-acrylate ternary system}, volume={135}, ISSN={["1097-4628"]}, url={https://doi.org/10.1002/app.46710}, DOI={10.1002/app.46710}, abstractNote={ABSTRACTSuperhydrophobic surfaces have attracted much attention for their exceptional properties such as self‐cleaning, anti‐fouling, and anti‐fogging. This study presents a facile approach for creating superhydrophobic coatings that are also oleophobic by utilizing spray deposition of polymers mixed with silica particles as an easy and effective route to control the surface roughness of the coatings. The polymer precursors formulated here are based on a ternary thiol‐epoxy‐acrylate mixture that reacts in the presence of a strong base without a need for external initiation (such as light). This system employs tetrafunctional thiol monomers as hubs where both the acrylate and the epoxy components can covalently bond. The acrylate component contains a perfluorinated side chain offering low surface energy properties and the difunctional epoxy monomers crosslink the thiol hubs to provide strength. Addition of a strong base catalyst (1,8‐diazabicycloundec‐7‐ene, or DBU) to the coating precursors initiates the polymerization reaction without the need for light. To identify the optimal formulation, Fourier transformed infrared spectroscopy (FTIR) measurements quantified the kinetics of the polymerization, X‐ray photoemission spectroscopy analysis revealed the surface composition, an optical goniometer evaluated the wetting behavior, and scanning electron microscopy and confocal laser the microscopy provided information about the surface topography of the coatings. Based on the results from FTIR, addition of 0.08 mol % of DBU effectively carries out the reaction within 10 min on the substrate while providing long solution shelf life for the spray coating process. The goniometer results showed that water contact angle of >150°, n‐dodecane contact angle of >110° and diiodomethane contact angle of >130° is achievable upon optimization of the coating precursors. This simple route to create superhydrophobic and oleophobic coatings by spraying may be useful for packaging, protective coatings, and other surface modifications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46710.}, number={45}, journal={JOURNAL OF APPLIED POLYMER SCIENCE}, publisher={Wiley}, author={Rezaei, Farzad and Talley, James N. and Dickey, Michael D. and Hauser, Peter J.}, year={2018}, month={Dec} }
 @article{rezaei_dickey_bourham_hauser_2017, title={Surface modification of PET film via a large area atmospheric pressure plasma: An optical analysis of the plasma and surface characterization of the polymer film}, volume={309}, ISSN={0257-8972}, url={http://dx.doi.org/10.1016/j.surfcoat.2016.11.072}, DOI={10.1016/j.surfcoat.2016.11.072}, abstractNote={This paper presents a comprehensive study of surface modification of polyethylene terephthalate film substrates to improve its adhesion properties using a large area atmospheric plasma. Different aspects of this study includes (1) analysis of the physical and chemical characteristics of the plasma (2) as well as the substrates, and (3) evaluation of adhesion of an acrylate based hard coating onto PET substrates. PET is chemically inert to most coatings, but atmospheric plasmas can modify the surface in a manner that is compatible with high throughput manufacturing. First, optical emission spectroscopy was employed to analyze the plasma in terms of its chemical composition as well as physical characteristics such as electron temperature and density. This section estimates electron temperature of 0.2–0.4 eV and density in the order of 1014–1015 cm− 3 for the studied plasmas. Second, various plasma gas mixtures with helium as the seed gas mixed with fraction of oxygen and/or nitrogen (0.5–1.1 v%) were used to carry out the surface treatment of the substrates at different exposure doses between 15 and 75 J cm− 2. Post-treatment characterization by XPS, AFM, and a goniometer show that the surface becomes enriched with oxygen, rougher, and more wetting depends on the power and composition of the plasma. Lastly, standard adhesion 180° T-peel tests indicated improved adhesion after treatment.}, journal={Surface and Coatings Technology}, publisher={Elsevier BV}, author={Rezaei, Farzad and Dickey, Michael D. and Bourham, Mohamed and Hauser, Peter J.}, year={2017}, month={Jan}, pages={371–381} }