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Journal articles on the topic 'Hydrophobic materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Baranov, O. V., L. G. Komarova, A. V. Rushevskaya, and V. I. Gomzayk. "HYDROPHOBIC COATINGS ON CELLULOSE MATERIALS." Fine Chemical Technologies 13, no. 6 (December 28, 2018): 28–34. http://dx.doi.org/10.32362/2410-6593-2018-13-6-28-34.

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A new hydrophobizator - tetra(ethoxy)di(octyl)disiloxane (TEDODS) - was synthesized in an ethanol solution at boiling point for 6 hours and characterized by NMR and IR spectroscopy. New hydrophobic coatings based on this compound were obtained under mild conditions by direct chemical modification of the surfaces of the cellulose materials (textile of different composition). The formation of a modified layer on the materials surface occurs due to the interaction of the ethoxy groups of the modifier and the hydroxyl groups of cellulose followed by heat treatment to fix it on the materials surface. The optimal conditions for obtaining the coatings were determined: 8% TEDODS weight gain with maximum hydrophobicity, with a wetting angle of 135°. The properties of the modified cellulose materials were studied (hydrophobicity, moisture absorption, etc.). The efficiency of using tetraethoxydioctyldisiloxane as a hydrophobizator when the content from 1% and a relatively small thickness of the coating of 2 microns was shown. It was found that hydrophobic coatings on the surface of cellulosic materials have little effect on moisture absorption and breathability of the original tissue.

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2

Zhang, Xiaohua, and Shuqiong Xu. "Preparation and Applications of Super-hydrophobic materials." MATEC Web of Conferences 175 (2018): 01012. http://dx.doi.org/10.1051/matecconf/201817501012.

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In this paper, the formation principle of hydrophobic phenomenon, the preparation and applications of hydrophobic materials are introduced. The super-hydrophobic material is a novel material with wide application and prospect. The application of status of super-hydrophobic materials in industrial and agricultural production, medical and health fields and people's daily life, in recent years, which was studied, and the prospect of development was systematically summarized.

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3

Makhotkina, Liliia, and Alina Khalilova. "Hydrophobic textile materials with organosilicon impregnation." E3S Web of Conferences 224 (2020): 03025. http://dx.doi.org/10.1051/e3sconf/202022403025.

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In recent years, special attention has been paid to studying the properties of hydrophobic surfaces of textile materials. The authors provide an overview of the applied textile-processing chemicals and of the methods for imparting hydrophobic properties to textile materials. According to the analysis, it was found that waterand splash-proofing treatment occupies an important place in the finishing processes of textile materials, contributing to a change in their characteristics. The purpose of the research is the development of hydrophobic textile materials for the work clothes production. The aqueous solution based on organosilicon compounds was used for textiles hydrophobization with retention of their performance and hygienic characteristics. The research results of the effect of aqueous solutions based on silane (A-1100 and A-187 trademarks) on the hydrophobic characteristics of textile materials is presented in the article.

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4

Guo, Zhiguang, Feng Zhou, Jingcheng Hao, and Weimin Liu. "Stable Biomimetic Super-Hydrophobic Engineering Materials." Journal of the American Chemical Society 127, no. 45 (November 2005): 15670–71. http://dx.doi.org/10.1021/ja0547836.

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5

&NA;. "ADSORPTION OF BFGF ON HYDROPHOBIC MATERIALS." ASAIO Journal 44, no. 2 (March 1998): 5A. http://dx.doi.org/10.1097/00002480-199803000-00017.

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6

Maciejewski, Hieronim, Joanna Karasiewicz, Michal Dutkiewicz, and Bogdan Marciniec. "Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates." Silicon 7, no. 2 (December 12, 2014): 201–9. http://dx.doi.org/10.1007/s12633-014-9264-5.

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7

Görbitz, Carl Henrik. "Microporous Organic Materials from Hydrophobic Dipeptides." Chemistry - A European Journal 13, no. 4 (January 22, 2007): 1022–31. http://dx.doi.org/10.1002/chem.200601427.

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8

Li, Xuan, Chen Zhang, Zhongjie Du, and Hangquan Li. "Preparation of hydrophilic/hydrophobic porous materials." Journal of Colloid and Interface Science 323, no. 1 (July 2008): 120–25. http://dx.doi.org/10.1016/j.jcis.2008.03.028.

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9

Soulios, Vasilis, Ernst Jan de Place Hansen, and Hans Janssen. "Hygric properties of hydrophobized building materials." MATEC Web of Conferences 282 (2019): 02048. http://dx.doi.org/10.1051/matecconf/201928202048.

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Moisture loads due to wind-driven rain can lead to accelerated decay of exposed building facades. Hydrophobic impregnation reduces water absorption of facade materials and is thus presumed to decrease moisture related damages. Hydrophobic impregnation however also lowers the drying speed of the exposed facade, leaving mainly water vapour transfer to take place. This study examines the open porosity and capillary absorption coefficient of impregnated brick samples as well as the effect of hydrophobic impregnation on the vapour permeability of brick and mortar samples. The open porosity was measured with vacuum saturation test, the absorption coefficient was determined by water uptake tests, both done after one month of curing of the impregnated brick samples. The vapour permeability was `derived from cup tests and from drying tests. The resulting open porosity from brick samples indicates that the changes in the overall pore structure are minimal after impregnation. In addition, the absorption coefficient of brick was found to be fairly close to zero, even with low concentrations of active ingredient, and regardless the percentage of silane/siloxane. Our findings support the claim that the hydrophobic impregnation does not influence significantly the water vapour permeability of brick and mortar.

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10

Ohtaki, Shinsaku, Hiroshi Maeda, Toru Takahashi, Youhei Yamagata, Fumihiko Hasegawa, Katsuya Gomi, Tasuku Nakajima, and Keietsu Abe. "Novel Hydrophobic Surface Binding Protein, HsbA, Produced by Aspergillus oryzae." Applied and Environmental Microbiology 72, no. 4 (April 2006): 2407–13. http://dx.doi.org/10.1128/aem.72.4.2407-2413.2006.

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ABSTRACT Hydrophobic surface binding protein A (HsbA) is a secreted protein (14.5 kDa) isolated from the culture broth of Aspergillus oryzae RIB40 grown in a medium containing polybutylene succinate-co-adipate (PBSA) as a sole carbon source. We purified HsbA from the culture broth and determined its N-terminal amino acid sequence. We found a DNA sequence encoding a protein whose N terminus matched that of purified HsbA in the A. ozyzae genomic sequence. We cloned the hsbA genomic DNA and cDNA from A. oryzae and constructed a recombinant A. oryzae strain highly expressing hsbA. Orthologues of HsbA were present in animal pathogenic and entomopathogenic fungi. Heterologously synthesized HsbA was purified and biochemically characterized. Although the HsbA amino acid sequence suggests that HsbA may be hydrophilic, HsbA adsorbed to hydrophobic PBSA surfaces in the presence of NaCl or CaCl2. When HsbA was adsorbed on the hydrophobic PBSA surfaces, it promoted PBSA degradation via the CutL1 polyesterase. CutL1 interacts directly with HsbA attached to the hydrophobic QCM electrode surface. These results suggest that when HsbA is adsorbed onto the PBSA surface, it recruits CutL1, and that when CutL1 is accumulated on the PBSA surface, it stimulates PBSA degradation. We previously reported that when the A. oryzae hydrophobin RolA is bound to PBSA surfaces, it too specifically recruits CutL1. Since HsbA is not a hydrophobin, A. oryzae may use several types of proteins to recruit lytic enzymes to the surface of hydrophobic solid materials and promote their degradation.

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11

Ioelovich, Michael. "Adjustment of Hydrophobic Properties of Cellulose Materials." Polymers 13, no. 8 (April 12, 2021): 1241. http://dx.doi.org/10.3390/polym13081241.

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In this study, physicochemical and chemical methods of cellulose modification were used to increase the hydrophobicity of this natural semicrystalline biopolymer. It has been shown that acid hydrolysis of the initial cellulose increases its crystallinity, which improves hydrophobicity, but only to a small extent. A more significant hydrophobization effect was observed after chemical modification by esterification, when polar hydroxyl groups of cellulose were replaced by non-polar substituents. The esterification process was accompanied by the disruption of the crystalline structure of cellulose and its transformation into the mesomorphous structure of cellulose esters. It was found that the replacement of cellulose hydroxyls with ester groups leads to a significant increase in the hydrophobicity of the resulting polymer. Moreover, the increase of the number of non-polar groups in the ester substituent contributes to rise in hydrophobicity of cellulose derivative. Depending on the type of ester group, the hydrophobicity increased in the following order: acetate < propionate < butyrate. Therefore, tributyrate cellulose (TBC) demonstrated the most hydrophobicity among all studied samples. In addition, the mixed ester, triacetobutyrate cellulose (TAB), also showed a sufficiently high hydrophobicity. The promising performance properties of hydrophobic cellulose esters, TBC and TAB, were also demonstrated.

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12

Mito-oka, Yasuko, Satoshi Horike, Yusuke Nishitani, Tadao Masumori, Munehiro Inukai, Yuh Hijikata, and Susumu Kitagawa. "Siloxane D4 capture by hydrophobic microporous materials." Journal of Materials Chemistry A 1, no. 27 (2013): 7885. http://dx.doi.org/10.1039/c3ta11217a.

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13

Quéré, David, and Mathilde Reyssat. "Non-adhesive lotus and other hydrophobic materials." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 366, no. 1870 (January 11, 2008): 1539–56. http://dx.doi.org/10.1098/rsta.2007.2171.

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Superhydrophobic materials recently attracted a lot of attention, owing to the potential practical applications of such surfaces—they literally repel water, which hardly sticks to them, bounces off after an impact and slips on them. In this short review, we describe how water repellency arises from the presence of hydrophobic microstructures at the solid surface. A drop deposited on such a substrate can float above the textures, mimicking at room temperature what happens on very hot plates; then, a vapour layer comes between the solid and the volatile liquid, as described long ago by Leidenfrost. We present several examples of superhydrophobic materials (either natural or synthetic), and stress more particularly the stability of the air cushion—the liquid could also penetrate the textures, inducing a very different wetting state, much more sticky, due to the possibility of pinning on the numerous defects. This description allows us to discuss (in quite a preliminary way) the optimal design to be given to a solid surface to make it robustly water repellent.

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14

Ahmad, Darem, Inge van den Boogaert, Jeremey Miller, Roy Presswell, and Hussam Jouhara. "Hydrophilic and hydrophobic materials and their applications." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 40, no. 22 (September 5, 2018): 2686–725. http://dx.doi.org/10.1080/15567036.2018.1511642.

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15

Tittarelli, F. "Oxygen diffusion through hydrophobic cement-based materials." Cement and Concrete Research 39, no. 10 (October 2009): 924–28. http://dx.doi.org/10.1016/j.cemconres.2009.06.021.

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16

Park, Mina, Sung Soo Park, M. Selvaraj, Dongyuan Zhao, and Chang-Sik Ha. "Hydrophobic mesoporous materials for immobilization of enzymes." Microporous and Mesoporous Materials 124, no. 1-3 (August 2009): 76–83. http://dx.doi.org/10.1016/j.micromeso.2009.04.032.

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17

Materak, K., A. Wieczorek, D. Bednarska, and M. Koniorczyk. "Internal hydrophobization of cement-based materials by means of silanes." Journal of Physics: Conference Series 2521, no. 1 (June 1, 2023): 012009. http://dx.doi.org/10.1088/1742-6596/2521/1/012009.

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Abstract The paper shows the opportunity of application of an organosilicon compound such as triethoxyoctylsilane (OTES) containing long, hydrophobic alkyl sidechains (octyl groups – C8H17) attached to the silicon atoms, as the admixtures for internal hydrophobization of cementitious building materials characterized by a porous internal structure. The study included the cement paste, mortar and concrete with three different hydrophobic admixtures based on triethoxyoctylsilane, but with miscellaneous concentration of the triethoxyoctylsilane in the admixture and different dosage in the fresh mix. The impact of organosilicon hydrophobic admixtures on the mechanical properties such as compressive strength, capillary water absorption of the cement mortar and concrete and the microstructure of cement paste was investigated. The hydrophobic, silicon-based admixtures decrease the capillary water absorption coefficient significantly. Even by 81.1% in case of cement mortar. The mechanical strength of cement mortar is also decreased, by 23.6%. The noticeable changes in the internal structure of pores of cement paste only for one admixture is observed.

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18

Victor, OSYKA, KARAVAYEV Taras, and KOMAKHA Volodymyr. "WATERPROOF PAPER PACKAGING MATERIALS: OPTIMIZATION OF HYDROPHOBIC COMPOSITION." INTERNATIONAL SCIENTIFIC-PRACTICAL JOURNAL "COMMODITIES AND MARKETS" 33, no. 1 (March 18, 2020): 37–46. http://dx.doi.org/10.31617/tr.knute.2020(33)04.

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19

Goncharuk, V. V., L. V. Dubrovina, and E. V. Makarova. "Dispersed water-containing composites based on hydrophobic materials." Journal of Water Chemistry and Technology 39, no. 6 (November 2017): 351–54. http://dx.doi.org/10.3103/s1063455x17060078.

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20

Melki, Safi, Florence Biguenet, and Dominique Dupuis. "Hydrophobic properties of textile materials: robustness of hydrophobicity." Journal of The Textile Institute 110, no. 8 (January 2, 2019): 1221–28. http://dx.doi.org/10.1080/00405000.2018.1553346.

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21

Yuryevna, L., and A. Adikovna. "Development of hydrophobic textile materials with organosilicon impregnation." IOP Conference Series: Materials Science and Engineering 953 (November 27, 2020): 012080. http://dx.doi.org/10.1088/1757-899x/953/1/012080.

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22

Razavi, Seyed Mohammad Reza, Junho Oh, Soumyadip Sett, Lezhou Feng, Xiao Yan, Muhammad Jahidul Hoque, Aihua Liu, et al. "Superhydrophobic Surfaces Made from Naturally Derived Hydrophobic Materials." ACS Sustainable Chemistry & Engineering 5, no. 12 (November 8, 2017): 11362–70. http://dx.doi.org/10.1021/acssuschemeng.7b02424.

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23

Liu, Jie, Jiangnan Huang, Evan K. Wujcik, Bin Qiu, Dan Rutman, Xi Zhang, Enrique Salazard, Suying Wei, and Zhanhu Guo. "Hydrophobic Electrospun Polyimide Nanofibers for Self-cleaning Materials." Macromolecular Materials and Engineering 300, no. 3 (January 3, 2015): 358–68. http://dx.doi.org/10.1002/mame.201400307.

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24

Hu, Haobin, Zhenyu Cheng, Haiyan Song, Haohao Li, Huiyu Wang, Yufeng Wang, Qi Zhang, and Yani Lu. "Preparation and properties of loess-based hydrophobic materials." Materials Chemistry and Physics 305 (September 2023): 127962. http://dx.doi.org/10.1016/j.matchemphys.2023.127962.

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25

Schäffer, Christian, Ana Maria Todea, Hartmut Bögge, Olga A. Petina, Dieter Rehder, Erhard T. K. Haupt, and Achim Müller. "Hydrophobic Interactions and Clustering in a Porous Capsule: Option to Remove Hydrophobic Materials from Water." Chemistry - A European Journal 17, no. 35 (July 11, 2011): 9634–39. http://dx.doi.org/10.1002/chem.201101454.

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26

Song, Zijian, Zhongyuan Lu, and Zhenyu Lai. "Influence of Hydrophobic Coating on Freeze-Thaw Cycle Resistance of Cement Mortar." Advances in Materials Science and Engineering 2019 (November 6, 2019): 1–12. http://dx.doi.org/10.1155/2019/8979864.

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Due to the porous characteristics of cement-based materials, they are often corroded by salt solutions, which results in decreased durability, especially against damage under freeze-thaw cycles (FTCs). Improving surface properties is an effective way to improve the durability of these materials. In this study, a hydrophobic coating was applied to the surface of cement mortar by chemical modification of low surface energy materials. Fourier transform infrared spectroscopy (FT-IR) showed that low surface energy substances are linked to hydration products through chemical bonds. A water contact angle test indicates that the surface of cement mortar changed from hydrophilic (θ = 14°) to hydrophobic (θ = 140°) after chemical modification. The cumulative water uptake of hydrophobic samples decreased by 90%. Meanwhile, the wear resistance of the hydrophobic coatings was excellent. Compared with the baseline sample, mass loss rate, flexural strength, and compressive strength of hydrophobic coating samples increased several-fold in the FTC test. Microstructural changes of the mortar were characterized by scanning electron microscopy. The results show that a hydrophobic coating can significantly improve the freeze-thaw resistance of cement-based materials. The formation of a hydrophobic layer on the surface of cement-based materials can improve their durability. The research results not only have applications in civil engineering but will also have great impact in the restoration of historic structures.

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27

Fang, Yanhong, Ping Wang, Lifang Sun, and Linhong Wang. "Physical Properties of Hydrophobic Epoxy-Based Silsesquioxane (EP-POSS) Photovoltaic Materials." Journal of Nanoelectronics and Optoelectronics 16, no. 1 (January 1, 2021): 11–16. http://dx.doi.org/10.1166/jno.2021.2903.

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With the increasing application of photovoltaic panels in the field of power generation, hydrophobic materials have gradually received attention from researchers. Because EP-POSS (epoxy-based silsesquioxane) has many excellent properties, such as transparency, hydrophobicity, flame retardancy and weather resistance, it may be widely used in photovoltaic power generation boards in the future. Therefore, it is important to study the physical properties of EP-POSS. This article studies the physical properties of synthesized EP-POSS, such as the light transmittance, adhesion, flame retardancy, surface energy, and dielectric properties. The results prove that EP-POSS is a hydrophobic material that can be applied to photovoltaic panels. This work laid a theoretical foundation for the application of EP-POSS as a hydrophobic material to photovoltaic panels.

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28

Ishida, Naoyuki, Kohei Matsuo, Koreyoshi Imamura, and Vincent S. J. Craig. "Hydrophobic Attraction Measured between Asymmetric Hydrophobic Surfaces." Langmuir 34, no. 12 (February 28, 2018): 3588–96. http://dx.doi.org/10.1021/acs.langmuir.7b04246.

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29

Nakari-Setälä, Tiina, Joana Azeredo, Mariana Henriques, Rosário Oliveira, José Teixeira, Markus Linder, and Merja Penttilä. "Expression of a Fungal Hydrophobin in the Saccharomyces cerevisiae Cell Wall: Effect on Cell Surface Properties and Immobilization." Applied and Environmental Microbiology 68, no. 7 (July 2002): 3385–91. http://dx.doi.org/10.1128/aem.68.7.3385-3391.2002.

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ABSTRACT The aim of this work was to modify the cell surface properties of Saccharomyces cerevisiae by expression of the HFBI hydrophobin of the filamentous fungus Trichoderma reesei on the yeast cell surface. The second aim was to study the immobilization capacity of the modified cells. Fusion to the Flo1p flocculin was used to target the HFBI moiety to the cell wall. Determination of cell surface characteristics with contact angle and zeta potential measurements indicated that HFBI-producing cells are more apolar and slightly less negatively charged than the parent cells. Adsorption of the yeast cells to different commercial supports was studied. A twofold increase in the binding affinity of the hydrophobin-producing yeast to hydrophobic silicone-based materials was observed, while no improvement in the interaction with hydrophilic carriers could be seen compared to that of the parent cells. Hydrophobic interactions between the yeast cells and the support are suggested to play a major role in attachment. Also, a slight increase in the initial adsorption rate of the hydrophobin yeast was observed. Furthermore, due to the engineered cell surface, hydrophobin-producing yeast cells were efficiently separated in an aqueous two-phase system by using a nonionic polyoxyethylene detergent, C12-18EO5.

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30

Şengün, Yasemin, and Ayşe Erzan. "Hydrophobic chains near hydrophobic surfaces—simulations in three dimensions." Journal of Physics: Condensed Matter 17, no. 14 (March 25, 2005): S1183—S1194. http://dx.doi.org/10.1088/0953-8984/17/14/007.

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31

Strauss, Ulrich P., and Yu Chih Chiao. "Hydrophobic polyampholytes." Macromolecules 19, no. 2 (March 1986): 355–58. http://dx.doi.org/10.1021/ma00156a020.

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32

Ohno, Nobumichi, and Shintaro Sugai. "Isotope effects on hydrophobic interaction in hydrophobic polyelectrolytes." Macromolecules 18, no. 6 (November 1985): 1287–91. http://dx.doi.org/10.1021/ma00148a042.

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33

Alessandro, Francesca, Francesca Macedonio, and Enrico Drioli. "New Materials and Phenomena in Membrane Distillation." Chemistry 5, no. 1 (January 2, 2023): 65–84. http://dx.doi.org/10.3390/chemistry5010006.

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In recent decades, membrane-based processes have been extensively applied to a wide range of industrial processes, including gas separation, food industry, drug purification, and wastewater treatment. Membrane distillation is a thermally driven separation process, in which only vapour molecules transfer through a microporous hydrophobic membrane. At the operational level, the performance of membrane distillation is negatively affected by wetting and temperature polarization phenomena. In order to overcome these issues, advanced membranes have been developed in recent years. This review, which focuses specifically on membrane distillation presents the basic concepts associated with the mass and heat transfer through hydrophobic membranes, membrane properties, and advances in membrane materials. Photothermal materials for solar-driven membrane distillation applications are also presented and discussed.

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34

Alalwiat, Ahlam, Sarah E. Grieshaber, Bradford A. Paik, Kristi L. Kiick, Xinqiao Jia, and Chrys Wesdemiotis. "Top-down mass spectrometry of hybrid materials with hydrophobic peptide and hydrophilic or hydrophobic polymer blocks." Analyst 140, no. 22 (2015): 7550–64. http://dx.doi.org/10.1039/c5an01600b.

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35

Kanuchova, Maria, Ľubica Kozáková, and Ivan Brezani. "Surface Analysis of Plastic Materials PET by XPS Method." Solid State Phenomena 244 (October 2015): 65–70. http://dx.doi.org/10.4028/www.scientific.net/ssp.244.65.

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The motivation for this study was the increasing need of recycling waste plastics in the cleanest - separated form. Relatively inexpensive methods of physicochemical separation of plastics is based on the different wettability of their surfaces. Because most used polymers are relatively highly hydrophobic, which would lead to their collective flotation in water, the study was aimed for the selective suppression of the hydrophobic character - hydrophilization of one of the most common plastics, which is PET. XPS method gave interesting information about the actual mechanism of the chemical reactions at the PET surface, which was changed by the alkaline hydrolysis.

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36

Tang, Shukun, Zahra Davoudi, Guangtian Wang, Zihao Xu, Tanzeel Rehman, Aleksander Prominski, Bozhi Tian, Kaitlin M. Bratlie, Haisheng Peng, and Qun Wang. "Soft materials as biological and artificial membranes." Chemical Society Reviews 50, no. 22 (2021): 12679–701. http://dx.doi.org/10.1039/d1cs00029b.

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This review focuses on soft materials involved in biological and artificial membranes. The illustration is a conceptual scheme of artificial membranes synthesized by human-made hydrophilic and hydrophobic soft materials.

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37

Et al., Jaafar. "Investigation of Superhydrophobic/Hydrophobic Materials Properties Using Electrospinning Technique." Baghdad Science Journal 16, no. 3 (September 1, 2019): 0632. http://dx.doi.org/10.21123/bsj.2019.16.3.0632.

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The aim of this research is to study the surface alteration characteristics and surface morphology of the superhydrophobic/hydrophobic nanocomposite coatings prepared by an electrospinning method to coat various materials such as glass and metal. This is considered as a low cost method of fabrication for polymer solutions of Polystyrene (PS), Polymethylmethacrylate (PMMA) and Silicone Rubber (RTV). Si were prepared in various wt% of composition for each solutions. Contact angle measurement, surface tension, viscosity, roughness tests were calculated for all specimens. SEM showed the morphology of the surfaces after coated. PS and PMMA showed superhydrophobic properties for metal substrate, while Si showed hydrophobic characteristics for both metal and glass substrate. Polymer solution of (15%Si/Thinner (Th)) owned best roughness for glass substrate and polymer solution of (4%PMMA/Tetrahydrofuran (THF)) owned best roughness for metal substrate.

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38

Pashinin, A. S., A. M. Emel’yanenko, and L. B. Boinovich. "Interaction between hydrophobic and superhydrophobic materials with aqueous media." Protection of Metals and Physical Chemistry of Surfaces 46, no. 6 (November 2010): 734–39. http://dx.doi.org/10.1134/s2070205110060183.

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39

Martin, T., B. Lefevre, D. Brunel, A. Galarneau, F. Di Renzo, F. Fajula, P. F. Gobin, J. F. Quinson, and G. Vigier. "Dissipative water intrusion in hydrophobic MCM-41 type materials." Chemical Communications, no. 1 (December 3, 2001): 24–25. http://dx.doi.org/10.1039/b109081j.

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40

Fu, Qiliang, Kunkun Tu, Christian Goldhahn, Tobias Keplinger, Maria Adobes-Vidal, Mathias Sorieul, and Ingo Burgert. "Luminescent and Hydrophobic Wood Films as Optical Lighting Materials." ACS Nano 14, no. 10 (September 28, 2020): 13775–83. http://dx.doi.org/10.1021/acsnano.0c06110.

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41

Chung, Jaeyeop, and Bongki Ryu. "Crystallization Behavior of Phosphate Glasses with Hydrophobic Coating Materials." Journal of Nanomaterials 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/981720.

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We analyzed the effect of the addition of Li2O3, TiO2, and Fe2O3on the crystallization behavior of P2O5–CaO–SiO2–K2O glasses and the effect of the crystallization behavior on the roughness and hydrophobicity of the coated surface. Exothermic behavior, including a strong exothermic peak in the 833–972 K temperature range when Fe2O3, TiO2, or Li2O3was added, was confirmed by differential thermal analysis. The modified glass samples (PFTL1–3) showed diffraction peaks when heated at 1073 and 1123 K for 5 min; the crystallized phase corresponds to Fe3(PO4)2, that is, graftonite. We confirmed that the intensity of the diffraction peaks increases at high temperatures and with increasing Li2O3content. In the case of the PFTL3 glass, a Li3Fe2(PO4)2phase, that is, trilithium diiron(III) tris[phosphate(V)], was observed. Through scanning electron microscopy and the contact angles of the surfaces with water, we confirmed that the increase in surface roughness, correlated to the crystallization of the glass frit, increases hydrophobicity of the surface. The calculated values of the local activation energies for the growth of Fe3(PO4)2on the PTFL1, PTFL2, and PFTL3 glass were 237–292 kJ mol−1, 182–258 kJ mol−1, and 180–235 kJ mol−1.

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42

Enke, Dirk, Michael Rückriem, Andreas Schreiber, and Jürgen Adolphs. "Water vapour sorption on hydrophilic and hydrophobic nanoporous materials." Applied Surface Science 256, no. 17 (June 2010): 5482–85. http://dx.doi.org/10.1016/j.apsusc.2009.12.144.

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Jin, Yifei, Kaidong Song, Nevada Gellermann, and Yong Huang. "Printing of Hydrophobic Materials in Fumed Silica Nanoparticle Suspension." ACS Applied Materials & Interfaces 11, no. 32 (July 23, 2019): 29207–17. http://dx.doi.org/10.1021/acsami.9b07433.

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Karbowiak, Thomas, Christian Paulin, Anthony Ballandras, Guy Weber, and Jean-Pierre Bellat. "Thermal Effects of Water Intrusion in Hydrophobic Nanoporous Materials." Journal of the American Chemical Society 131, no. 29 (July 29, 2009): 9898–99. http://dx.doi.org/10.1021/ja903954h.

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Oku, Shota, Masaya Nishiyama, and Yuji Takao. "Selective isolation of bacteria from soil with hydrophobic materials." World Journal of Microbiology and Biotechnology 27, no. 8 (December 19, 2010): 1941–45. http://dx.doi.org/10.1007/s11274-010-0633-y.

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Reetz, M. T., A. Zonta, J. Simpelkamp, A. Rufinska, and B. Tesche. "Characterization of hydrophobic sol-gel materials containing entrapped lipases." Journal of Sol-Gel Science and Technology 7, no. 1-2 (August 1996): 35–43. http://dx.doi.org/10.1007/bf00401881.

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Takahashi, H., and W. J. Finger. "Dentin surface reproduction with hydrophilic and hydrophobic impression materials." Dental Materials 7, no. 3 (July 1991): 197–201. http://dx.doi.org/10.1016/0109-5641(91)90043-x.

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Liu, Wenlong, Xingwen Zhang, Hongyu Ren, Xingcheng Hu, Xinyu Yang, and Hui Liu. "Fluorine-free and durable hydrophobic coating made with corn straw-derived silane modified epoxy resin." BioResources 18, no. 1 (January 25, 2023): 2011–23. http://dx.doi.org/10.15376/biores.18.1.2011-2023.

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Hydrophobic materials have promising applications. However, fluorine present in hydrophobic materials can lead to health risks and environmental pollution. This study investigated an environmentally friendly route to produce fluorine-free hydrophobic coatings with good wear resistance. Wear-resistant hydrophobic coatings were prepared by introducing different ratios of spirocyclic alkoxysilane into the epoxy resin. Characterization by Fourier transform infrared spectroscopy, water contact angle measurement, scanning electron microscope, tape adhesion test, and abrasion testing showed that the multi-methyl group and double-ring rigid skeleton structure of spirocyclic alkoxysilane can remarkably improve the hydrophobic performance and wear resistance of the epoxy resin. The modified hydrophobic coatings can withstand more than 1600 instances of controlled rubbing. Furthermore, the maximum water contact angle can reach 110° after substantial abrasion. The novelty of the work is that the authors successfully synthesized spirocyclic alkoxysilane for the first-time using corn straw ash. The prepared spirocyclic alkoxysilane was then used as a modifier to prepare hydrophobic epoxy resin coating. This approach can broaden the utilization of corn straw ash. Therefore, this method can achieve a green and low-cost preparation of wear-resistant hydrophobic coatings without the introduction of fluorine.

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Dewangan, Shippi, Amarpreet K. Bhatia, Ajaya Kumar Singh, and Sónia A. C. Carabineiro. "Removal of Hydrophobic Contaminants from the Soil by Adsorption onto Carbon Materials and Microbial Degradation." C 7, no. 4 (December 3, 2021): 83. http://dx.doi.org/10.3390/c7040083.

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The pollution of soil is a worldwide concern as it has harmful consequences on the environment and human health. With the continuous expansion of industry and agriculture, the content of hydrophobic organic pollutants in the soil has been increasing, which has caused serious pollution to the soil. The removal of hydrophobic organic contaminants from soil, aiming to recover environmental safety, is an urgent matter to guarantee sufficient food and water for populations. Adsorption has proven to be an effective and economically practicable method for removing organic contaminants. This paper summarizes the use of low-cost adsorbents, such as biochar and activated carbon, for removing hydrophobic organic contaminants from soil. Biochar is usually appropriate for the adsorption of organic contaminants via the adsorption mechanisms of electrostatic interaction, precipitation, and ion exchange. Biochar also has numerous benefits, such as being obtained from several kinds of raw materials, having low costs, recyclability, and potential for environmental treatment. This paper illustrates biochar’s adsorption mechanism for organic contaminants and discusses the microbial degradation of hydrophobic organic contaminants.

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Zhang, Zeyu, Bingru Shao, Fapeng Wang, Jiuyin Pang, and Ling Su. "PREPARATION THE ROSE-LIKE HYDROPHOBIC SURFACE OF WOOD BASED MATERIALS BY SOFT LITHOGRAPHY." WOOD RESEARCH 66(2): 2021 66, no. 2 (April 30, 2021): 211–20. http://dx.doi.org/10.37763/wr.1336-4561/66.2.211220.

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To prepare hydrophobic wood with rose-like hydrophobic surface and avoid moisture damage to wood. In this paper, With polyvinyl alcohol (PVA) as the elastic mold, the microstructure of the rose petals was replicated on the wood surfaces by soft lithography. The soft lithography technique was used to modify the wood sur-face, transferring over it a rose-like topography, based on a micro/nano hierarchical structure using fresh rose as the template. The surface of poplar coated with polystyrene was reconstructed twice using 1, 3, 5, 8 and 10% PVA as templates, respectively. The results show that the average contact angle of poplar surface coated with polystyrene is more than 130°, that of fresh rose surface is about 140°, and that of untreated wood is about 60°. Therefore, the wood surface with polystyrene has obtained a similar structure to that of rose surface and has a certain hydrophobicity. In addition, the microstructures observed by means of SEM, showing rough surface structures with micro-nanopapillate hills on wood surfaces. Water droplets could easily roll down on such wood surfaces, exhibiting super-hydrophobic and low adhesion properties. The successful fabrication of rose-like wood provided a new direction for researches on the super-hydrophobic of wood, which could effectively prevent the damage of moisture to wood.

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