Highly transparent, organic-inorganic hybrid UV-curable coating materials with amphiphobic characteristics

Jeong, Keuk-Min; Nagappan, Saravanan; Min, Gao; Zhang, Yongxu; Qu, Minming; Zhang, Yan; Ha, Chang‐Sik

doi:10.1016/j.porgcoat.2019.05.029

Cited by 15 publications

(9 citation statements)

References 58 publications

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“…53 The good optical properties of a substrate can be assumed to be due to low surface energy reducing the scattering loss on the surface. 46,54,55 Similarly, the uniform particulate structure shown in FESEM images (Figure 4b,e,g) also matches with the hierarchical structure with rough surface morphology in AFM images (Figure S9b, Figure 5b,e, and Table S3). The surfaces modified with PSi 0.1 suspension exhibited decreased surface roughness as a general trend.…”

Section: Stability Of Metal Ion-incorporated Functionalsupporting

confidence: 71%

“…The structural integrity of the silicone functional groups was investigated by either alkyl or oxygen substitution using 29 Si NMR spectroscopy . A typical 29 Si NMR spectrum of the ZnFM-AE solution is shown in Figure S3.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The structural integrity of the silicone functional groups was investigated by either alkyl or oxygen substitution using 29 Si NMR spectroscopy. 46 A typical 29 Si NMR spectrum of the ZnFM-AE solution is shown in Figure S3. The obtained spectrum showed the characteristic resonance frequencies at −66 and −77 ppm for T 2 and T 3 units (T x , RSi(OSi) x (OX) 3−x, X = H or −OCH 3 group) in the sample, respectively, which indicate the partial cleavage and rearrangement of Si−O−Si bonds through the hydrolysis and polycondensation of TESPMA or the maintenance of alkyl functional group in the material.…”

Section: Stability Of Metal Ion-incorporated Functionalmentioning

confidence: 99%

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Highly Transparent, Robust Hydrophobic, and Amphiphilic Organic–Inorganic Hybrid Coatings for Antifogging and Antibacterial Applications

Jeon

Nagappan

et al. 2021

ACS Appl. Mater. Interfaces

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The control of surface wettability through a combination of surface roughness, chemical composition, and structural modification has attracted significant attention for antifogging and antibacterial applications. Herein, a two-step spin-coating method for amphiphilic organic−inorganic hybrid materials with incorporated transition metal ions is presented. The coating solution was prepared via photochemical thiol−ene click reaction between the mercapto functional group in trimethylolpropane tris(3-mercaptopropionate) and the vinyl functionalized silica precursor 3-(trimethoxysilyl)propyl methacrylate. In the first step of coating, a glass substrate was coated using a solution of metal nitrate hydrates and subsequently showed hydrophobic properties. As the second step, the spin-coated glass substrate was further coated with silica nanoparticles (SiO 2 NPs) and polycaprolactone triol (PCT) suspension, where the contents of SiO 2 NPs were fixed at 0.1 wt %, unless otherwise noted. The coated substrate exhibited hydrophilic properties. For comparison, the coating was also formulated with the SiO 2 NPs/PCT suspension without SiO 2 NPs and with 0.5 wt % SiO 2 NPs as well as by adjusting different coating layer thicknesses. The surface morphology and chemical compositions of the obtained coating materials were analyzed by field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The transparency and static contact angle of coated samples were measured by UV−visible spectrophotometry and drop shape analysis, respectively. It was concluded that our novel hybrid coating materials exhibited excellent antibacterial and antifogging properties with extremely high scratch resistance and transparency.

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Section: Stability Of Metal Ion-incorporated Functionalsupporting

confidence: 71%

Section: Results and Discussionmentioning

confidence: 99%

Section: Stability Of Metal Ion-incorporated Functionalmentioning

confidence: 99%

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Highly Transparent, Robust Hydrophobic, and Amphiphilic Organic–Inorganic Hybrid Coatings for Antifogging and Antibacterial Applications

Jeon

Nagappan

et al. 2021

ACS Appl. Mater. Interfaces

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“…The absorption seen for (CF)6 and (CF)10 in the range of 1100-1250 cm −1 was the characteristic bands of the C-F stretching vibrations in -CF 2 and -CF 3 groups. Moreover, the existence of C-F bonds was also observed in the range of 520-730 cm −1 , corresponding to the rocking and wagging modes [41][42][43].…”

Section: Chemical Composition (Ftir Spectroscopy)mentioning

confidence: 94%

Structural and Functional Properties of Fluorinated Silica Hybrid Barrier Layers on Flexible Polymeric Foil

et al. 2021

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The reported work was focused on sol–gel-derived organically modified and fluorinated silica coatings deposited on elastic polymeric foil. The structure and topography of the coatings were tested by infrared spectroscopy and microscopic studies. The functional properties were determined using thermal analysis, surface analysis, and oxygen permeability tests. The barrier feature of the investigated materials against oxygen was correlated with the properties of the coatings. The hybrid (organic–inorganic) structure of the coatings was proven, demonstrating the presence of a silica network modified with alkyl and fluoroalkyl groups since precursors with the isooctyl group or different lengths of the fluoroalkyl chains were used for the syntheses. The coatings were free of defects and had a smooth surface except for the sample containing the longest fluoroalkyl chain (perfluorododecyl group), which showed a wrinkle-like surface. The hydrophobic character of the coatings increased, whereas the oxygen permeation coefficient values decreased (reaching a fourfold lower coefficient in comparison to the bare substrate) with a higher content of the fluorinated carbon atoms in the structure. The results were enriched by the information from the thermomechanical analysis as well as nanoindentation and scratch tests giving values of the glass transition temperature, thermal expansion coefficient, coatings adhesion, and hardness of the investigated systems.

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“…[52] This method has been widely used in the field of superhydrophobic coatings to improve the wear resistance of the coating. [53,54] Initially, mesoporous SiO2 (SBA-15) is chosen to toughen and modify benzoxazine, creating a superhydrophobic polymer surface with high abrasion resistance. The results show that the water contact angles (WCAs) are almost unchanged after 400 cm at 1.6 kPa of abrasion for BA-a/SBA-15, while for BA-a/nano SiO2, the WCAs decreased sharply after 80 cm of abrasion.…”

Section: Inorganic Particles Modified Polybenzoxazinementioning

confidence: 99%

Research Progress in Toughening Modification of Polybenzoxazine

Zhao¹,

Li²,

Li³

et al. 2020

Eng. Sci.

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Benzoxazine is a new kind of phenolic resin developed in recent years. It possesses a lot of interesting properties including flexible molecular design, nearly zero curing shrinkage and corresponding polybenzoxazine shows excellent mechanical and heat resistance properties. However, like other thermosetting resins, polybenzoxazine also faces the disadvantages of high brittleness and low impact strength during use. This paper briefly summaries the research progress of the toughening modification of polybenzoxazine, including rubber elastomer, inorganic particles, thermoplastic engineering plastic, other thermosetting resin, hyperbranched polymer and benzoxazine molecular design modification. Furthermore, the development direction of the toughening modification of polybenzoxazine has prospected.

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Highly transparent, organic-inorganic hybrid UV-curable coating materials with amphiphobic characteristics

Cited by 15 publications

References 58 publications

Highly Transparent, Robust Hydrophobic, and Amphiphilic Organic–Inorganic Hybrid Coatings for Antifogging and Antibacterial Applications

Highly Transparent, Robust Hydrophobic, and Amphiphilic Organic–Inorganic Hybrid Coatings for Antifogging and Antibacterial Applications

Structural and Functional Properties of Fluorinated Silica Hybrid Barrier Layers on Flexible Polymeric Foil

Research Progress in Toughening Modification of Polybenzoxazine

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