Modification of epoxy resin, silicon and glass surfaces with alkyl- or fluoroalkylsilanes for hydrophobic properties

Marczak, Jacek; Kargol, Marta; Psarski, Maciej; Celichowski, Grzegorz

doi:10.1016/j.apsusc.2016.02.071

Cited by 27 publications

(11 citation statements)

References 22 publications

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“…The functionalization of the hydrophilic surface, such as DA-Cell-F, with the alkyl chain containing fewer carbons atoms is not enough to turn the surface hydrophobic to such an extent where it can reject the water without leaving any watermark. The increasing chain length results in enhanced hydrophobicity [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

Removal of Oily Contaminants from Water by Using the Hydrophobic Ag Nanoparticles Incorporated Dopamine Modified Cellulose Foam

Baig

Kammakakam

2021

Polymers

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The presence of oil-related contaminants in water has emerged as a severe threat to the environment. The separation of these contaminants from water has become a great challenge, and extensive efforts are being made to develop suitable, environmentally friendly materials. Highly hydrophobic materials are effective in the selective separation of oil from water. In this work, silver (Ag)-incorporated, highly hydrophobic dopamine-modified cellulose sponge was prepared by functionalizing with the range of alkyl silanes. The Ag nanoparticle-incorporated dopamine provided the appropriate roughness, whereas the alkyl component provided the low surface energy that made it selective towards oil. It was found that the alkyl groups with a longer chain length were more effective in enhancing the hydrophobicity of the Ag nanoparticle-incorporated, dopamine-modified cellulose. The developed materials were characterized by Fourier transform infrared spectroscopy (FTIR), field emission-scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), elemental mapping, and contact angle goniometry. The maximum water contact angle on the functionalized surfaces was observed at 148.4°. The surface of the C18s-Ag-DA-Cell-F showed excellent selectivity towards the oily component that rapidly permeated, and water was rejected wholly. The developed material showed a separation efficiency of 96.2% for the oil/water mixture. The C18s-Ag-DA-Cell-F material showed excellent reusability. Due to their environmentally friendly nature, excellent selectivity, and good separation efficiency, the functionalized cellulose materials can be used to separate oil and water effectively.

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Section: Resultsmentioning

confidence: 99%

Removal of Oily Contaminants from Water by Using the Hydrophobic Ag Nanoparticles Incorporated Dopamine Modified Cellulose Foam

Baig

Kammakakam

2021

Polymers

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“…Sodium stearate, with its excellent surface activation effect, remarkably enhances the hydrophobic properties of garnet. Compared with modification of nanoparticles [24,25], MG microparticles had a higher water contact angle. As shown in Figure 3, contact angles of unMG and MG in water were approximately 20 • and 135 • , respectively.…”

Section: Physicochemical Properties Of Mgmentioning

confidence: 94%

“…These two specimens also showed the -OH band at 3370 cm −1 . MG bands at 2918 cm −1 and 2849 cm −1 resulted from, respectively, asymmetric and symmetric stretching vibration of methylene [24,30], indicating successful loading of sodium stearate ions into the garnet. The bands at 1434, 1464, and 1558 cm −1 of sodium stearate were attributed to vibration absorption of methyl and methylene, and asymmetric stretching vibration of the carboxylate group, respectively [30][31][32].…”

Section: Physicochemical Properties Of Mgmentioning

confidence: 99%

Surface-Modified Garnet Particles for Reinforcing Epoxy Composites

Jiang

Liu

et al. 2018

Minerals

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The present study investigated the tribological performance of epoxy (EP) matrix composites enhanced with natural garnet. The garnet was surface-modified with sodium stearate for optimal performance. Composites comprising different contents and particle sizes of modified garnet (MG) were prepared with a mixture of EP and MG. The sodium stearate-bonded garnet and EP formed a stable structure. Tribological performance was measured by a ball-on-plate apparatus under permanent dry sliding conditions and a wear track was obtained by an optical profilometer. The wear mechanism was explored by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) images. Wear test results showed that the coefficient of friction for all EP/MG composites decreased compared with that for neat epoxy. The results also indicated that the addition of MG can evidently improve the tribological properties of EP matrix composites.

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“…17 It is well known that fluorinated polymers are characterized by low surface free energy and high water contact angle. [18][19][20][21] Moreover, epoxy resin modification methods using fluorinated compounds also are described. 22,23 Few articles present a correlation between chemical structure of fluorinated epoxy resins and ice adhesion properties, which is very important in the case of materials with low ice adhesion preparation for antiicing applications.…”

Section: Introductionmentioning

confidence: 99%

Influence of chain length of organic modifiers in hydrophobization process on epoxy resin properties

2022

Self Cite

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Resins have been widely used in a variety of industry fields for more than a century, such as coatings, adhesives, or automotive. Their low cost and workability are extremely useful in creating more and more advanced materials due to their chemical structure (Ghaffari et al. in Surf Interfaces 17:100340, 2019). Common problem today is the wetting tendency of various materials which in the end can result in further damage in the structure because of atmospheric conditions. Nowadays, scientists are trying to find better ways to improve the properties of coatings or composites in cases like hydrophobicity or icephobicity. One of the examp les are fluorinated organic compounds with good linking properties to the substrate (Qin et al. in Mater Today Commun 22:100770, 2020). Because o f that, to im prove the properties of a basic epoxy resin, its chain has been modified with hydrophobic compounds with different chain lengths. Influence of modifiers’ molecule size on hydrophobic and ice adhesion properties of obtained epoxy resins has been tested. Chemical composition of prepared coatings was analyzed by FTIR. Moreover, their thermal stability was investigated using TG and DSC measurements. Additionally, wettability of the samples was analyzed with a goniometer. Furthermore, their ice adhesion tests were performed on a dedicated apparatus. As a result, presented work provides a critique overview and concept of promising icephobic and hydrophobic coatings in the industry. Moreover, these products have a high chance to be developed further.

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Modification of epoxy resin, silicon and glass surfaces with alkyl- or fluoroalkylsilanes for hydrophobic properties

Cited by 27 publications

References 22 publications

Removal of Oily Contaminants from Water by Using the Hydrophobic Ag Nanoparticles Incorporated Dopamine Modified Cellulose Foam

Removal of Oily Contaminants from Water by Using the Hydrophobic Ag Nanoparticles Incorporated Dopamine Modified Cellulose Foam

Surface-Modified Garnet Particles for Reinforcing Epoxy Composites

Influence of chain length of organic modifiers in hydrophobization process on epoxy resin properties

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