Effect of surface modification on nano-diamond particles for surface and thermal property of UV-curable hybrid coating

Beyler‐Çiğil, Aslı; Kahraman, Memet Vezi̇r

doi:10.1016/j.porgcoat.2016.09.015

Cited by 19 publications

(5 citation statements)

References 18 publications

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“…The absence of the acrylate peaks found in 1631 shows that the reaction between the acrylate groups of Hema and nanosilica was successful. The study is in line with the literature 37 . When the acrylate modified nanosilica ATR‐FTIR spectra were examined, the peaks of OH groups in hydroxylated silica disappeared at 3200 to 3500 cm −1 , instead of NH peaks at 3300 cm −1 , 1720 cm −1 CO peaks, and again acrylate peaks appeared at 1635 cm −1 .…”

Section: Resultssupporting

confidence: 89%

Highly flame retardant photocured paper coatings and printability behavior

Ozcan

Kašiković

Kandırmaz

et al. 2020

Polymers for Advanced Techs

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Due to the high flammability of the paper, its use is restricted in advanced applications. In this study, UV-cured paper coating formulations containing silica nanoparticles and phosphinoxide were prepared and coated on paper surface. Flammability, wettability, and printability properties were investigated. For this purpose, the surface of the silica nanoparticles was first functionalized with hydroxyethyl methacrylate (HEMA) ─OH. The hydroxylated silica nanoparticles were then modified with isocyanatoethyl methacrylate. Bis fluoro phenylphosphine oxide was synthesized by Grignard reaction elsewhere and OH modified in basic medium. Acrylate groups were added to BHPPO with isocyanatoethyl methacrylate to make it suitable for UV-curing formulation. The chemical structures of the obtained substances were illuminated by ATR-FTIR. UV-cured paper coating formulations containing acrylated silica, acrylated phosphinoxide, and mixtures thereof were prepared and coated on the paper surface. Chemical structure, contact angle, surface energies, surface morphology, thermogravimetric analysis, and limited oxygen index of the coatings were determined. As a result, it has been concluded that coated papers have increased thermal stability in the nitrogen atmosphere. The highest thermal stability was observed in coatings containing nanosilica and it was determined that all of the coatings ignited later. Hybrid coatings made within the scope of this study have improved the printability properties as well as adding flame retardancy properties to the paper.

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Section: Resultssupporting

confidence: 89%

Highly flame retardant photocured paper coatings and printability behavior

Ozcan

Kašiković

Kandırmaz

et al. 2020

Polymers for Advanced Techs

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“…After the temperature was increased to 60°C, p-toluenesulfonic acid (p-TSA) (1 wt %) was added as a catalyst, and the reaction was continued for 3 hours. hydMEMO was prepared similar to previous studies in the literature [53]. Brie y, hydMEMO was obtained by mixing MEMO, ethanol, distilled water, and catalyst (p-TSA) (0.05 wt%) at room temperature for 12 hours.…”

Section: Synthesis Of Phosphorous Silicone Methacrylate (Psima) Monomermentioning

confidence: 99%

UV-curable polyurethane-based, halogen-free, CaB4O7 nanoparticles decorated, flexible flame-retardant films

Beyler-Çiğil,

Aytekin,

Ceren

et al. 2024

Preprint

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In this study, combinations of phosphorous silicone methacrylate monomer (PSiMA) and CaB4O7 nanoparticles (CBO NPs) were prepared for formation of halogen-free, flame-retardant, UV-curable polyurethane acrylate (PUA) films. The addition of either PSiMA or CBO NPs to PUA increased the flame-retardancy as expected, but the PSiMA-only addition, unfortunately, had adverse effects on the physical properties. However, the combined addition of PSiMA and CBO NPs not only resulted in the best performance on flame retardancy but also recovered the polymer’s thermal and physical properties. With additives high initial decomposition temperatures were observed in the range of 175–216°C. Among the combinations, PLU-60PSi-10NP (60 phr PSiMA + 10 phr CBO NPs) resulted in the best LOI performance of 27, which is 40% more than the PLU film (PUA-based film). In addition, the film had a remarkable char formation ability of 14.5% compared to PLU. The observed high LOI values could not be explained by the high percentages of P, Si, B, and N in the films, but the synergy among the additives was also considered. In this study, we have investigated the use of a promising technique, THz spectroscopy, on the characterization of these films as well. Very interestingly, the results showed a nice correlation between the dielectric responses measured by THz spectroscopy and the mechanical properties of the films. Observed great performances along with the simple preparation methods of these newly developed halogen-free, flame-retardant, PUA-based films are expected to significantly increase their potential use in many practical applications such as automobile, leather, printing, and coatings.

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“…Acrylate groups modification of ND was carried out in two steps as in our previous studies in the literature (Beyler-Çi gil and Kahraman, 2016). In the first step, the hydroxy groups were modified into ND particles under UV radiation.…”

Section: Preparation Of Acrylate Modified Nanodiamondmentioning

confidence: 99%

“…Photoinitiated polymerization has attracted great interest, as it brings various economic and ecological expectations together (Khudyakov, 2018; Beyler-Çiğil and Kahraman, 2016). The photopolymerization technique, as a fast and effective method compared to thermal curing in the conversion of liquid oligomers and multifunctional monomer resins into cross-linked polymer networks, is used in various applications including manufacturing of adhesives and polymer coatings in the industry (Madakbas et al , 2010; Wei et al , 2019; Basturk et al , 2016; Basturk et al , 2018; Du et al , 2017).…”

Section: Introductionmentioning

confidence: 99%

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Free volume, thermal and morphological properties of photo-crosslinked thiol-Ene/ nanodiamond hybrid network

Çi̇ği̇l

Madakbaş

Tav

et al. 2020

PRT

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Purpose The purpose of this research paper is to investigate the changes in free volume by adding acrylate modified nanodiamond particles. In this study, a cross-linked thiol-ene (T) network was obtained under ultraviole light. The changes in free volume were analyzed when acrylate-modified nanodiamond (M-ND) particles were added to the nanocomposites obtained. Positron annihilation lifetime spectroscopy (PALS), a well-established method, was used for this analysis. In addition, the effect of nanocomposites containing different ratios of acrylate M-ND particles (1, 2, 3 and 5 Wt. %) on the surface and the thermal properties were also examined. Design/methodology/approach The impact of different quantities of acrylate M-ND on the free volume and surface morphological properties of thiol-ene polymer networks were studied by using scanning electron microscopy, differential scanning calorimetry, attenuated total reflection, Fourier transform infrared spectroscopy, PALS and thermogravimetric analysis measurements. Findings The thermal properties of T/M-ND were found to depend on the weight percentages of the M-ND content. For increasing weight percentages of M-ND added to thio-lene polymer networks, the glass transition temperature (Tg) increased from 103°C to 154°C. The ortho-positronium (o-Ps) lifetime (free volume) and free volume fraction characterization of T/M-ND nanocomposites were investigated using PALS. Increasing temperature caused both the o-Ps lifetime (free volume) to change with increasing saturation and to linearly increase the intensity; however, an increasing weight percentage of M-ND caused no change at all for the o-Ps lifetime (free volume) and the free volume fraction. Originality/value According to published literature, and to the best of the authors’ knowledge, this is the first time a study examining the free volume properties in a thiol-ene system has been carried out.

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Effect of surface modification on nano-diamond particles for surface and thermal property of UV-curable hybrid coating

Cited by 19 publications

References 18 publications

Highly flame retardant photocured paper coatings and printability behavior

Highly flame retardant photocured paper coatings and printability behavior

UV-curable polyurethane-based, halogen-free, CaB4O7 nanoparticles decorated, flexible flame-retardant films

Free volume, thermal and morphological properties of photo-crosslinked thiol-Ene/ nanodiamond hybrid network

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