Optical properties and UV-curing behaviors of optically clear PSA-TiO2 nano-composites

Lee, Seung-Woo; Park, Ji Won; Park, Cho-Hee; Kwon, Youngeun; Kim, Hyun‐Joong; Kim, Eon-Ah; Woo, Hang-Soo; Schwartz, S.; Rafailovich, Miriam; Sokolov, Jonathan

doi:10.1016/j.ijadhadh.2013.03.001

Cited by 34 publications

(14 citation statements)

References 33 publications

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“…The viscoelastic properties of PSAs are associated with their adhesion performance and curing behaviors [4]. The storage modulus represents the elastic deformation of PSAs and their hardness at a given temperature and frequency [32].…”

Section: Viscoelastic Properties (Dma)mentioning

confidence: 99%

“…Optically clear adhesives (OCAs) have recently been applied in various industrial applications [1,2], such as the use of acrylic OCAs for color filters in liquid crystal displays [3]. Acrylic pressure-sensitive adhesives (PSAs) blended with titanium oxide [4], hafnium carboxyethyl acrylate [5], and zirconium carboxyethyl acrylate [6] have also been studied as OCAs for applications. These have a high refractive index, which can contribute to clearer images on a display.…”

Section: Introductionmentioning

confidence: 99%

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UV/UV step-curing of optically clear acrylate adhesives for mobile devices

Js¹,

Shim²,

Baek³

et al. 2019

Express Polym. Lett.

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In order to overcome the issues of rework and height difference in the manufacturing of smart devices, UV/UV stepwise curing was conducted on acrylate-based optically clear adhesives. Photo differential scanning calorimetry was used to confirm the results of curing of samples that were processed both with and without acrylic acid, over a range of UV light exposure times for a primary curing process. The samples processed at 0.6 J/cm 2 of UV energy with and without acrylic acid showed the highest amount of residual monomers after primary curing. The amount of residual monomers observed in primary-cured samples decreased as the amount of UV light energy increased, from 0.9 to 1.5 J/cm 2. After secondary curing, only the samples cured at 0.6 J/cm 2 showed small amounts of residual monomers, while the samples exposed to other UV energies showed very few residual monomers, implying that these samples were completely cured during the secondary curing step. Adhesion properties were evaluated using peel and tack tests, while the viscoelastic properties of the samples were confirmed by dynamic mechanical analysis. Our results indicate that uniform physical properties were achieved after secondary curing. The effects of stepwise curing are demonstrated by the difference in gel fractions determined after primary and secondary curing.

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Section: Viscoelastic Properties (Dma)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

UV/UV step-curing of optically clear acrylate adhesives for mobile devices

Js¹,

Shim²,

Baek³

et al. 2019

Express Polym. Lett.

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show abstract

“…In recent years, organic-inorganic hybrid materials have also received extensive attention because the utilization of nanosized inorganic particles is capable of improving the properties of polymers [19,20]. It has been reported that nanoparticulate SiO 2 [21], TiO 2 [22], ZnO [23], and polyhedral oligomeric silsesquioxanes (POSS) [24,25] have been introduced into UV-cured systems and have shown improved properties. However, studies on the introduction of rare earth complexes into UV-cured systems have rarely been reported [26,27].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Novel Terbium Complex Coordinated with 10-Undecenoic Acid for UV-Cured Coatings

Jiao

Zhong

Zhou

et al. 2020

International Journal of Polymer Science

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A UV-cured composite containing a rare earth complex was prepared for this study. First, the photoluminescent terbium complex was synthesized with a long-chain unsaturated fatty acid (10-Undecenoic acid) by a solution precipitation method, resulting in the 10-UA-Tb(III) complex. Its structure was proven by FTIR, elemental analysis, XRD, and TGA. The results indicated that the organic acid ligand successfully coordinated with the Tb 3+ ion and that the complex had a chelate bidentate structure. The emission spectrum of the 10-UA-Tb(III) complex indicated that the complex can emit a bright green light with the unique luminescence of the Tb 3+ ion. Furthermore, the luminescence properties of complexes with different ratios of Tb 3+ and ligand were studied, and the ratio of Tb 3+ and the ligand had an obvious impact on the luminescence intensity of the 10-UA-Tb(III) complex. Subsequently, the prepared rare earth complex was doped into a UV-cured coating in different proportions to obtain a UV-cured composite. The morphology of the rare earth UV-cured composite was observed by SEM. The images showed that the rare earth complex was dispersed uniformly in the polymer matrix. Moreover, the composites could emit fluorescence. Additionally, it has good thermal stability and compatibility with the resin. Therefore, these composites should have potential applications in UV curable materials, such as luminescence coatings.

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“…These parameters are dependent on the reactive diluent used for the secondary curing process. Care should be taken when choosing the appropriate diluent, as it determines not only the curing properties but also the viscosity and specific characteristics of the oligomer [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Ultraviolet-Curing Kinetics of Ultraviolet-Polymerized Oligomers Cured Using Poly (Ethylene Glycol) Dimethacrylate

et al. 2018

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Ultraviolet (UV)-curable oligomers are increasingly being used in various industries because they can be applied rapidly and have excellent physical properties. Ultraviolet polymerization is used for manufacturing such oligomers. Reactive diluents, which are employed during the secondary curing of UV-curable oligomers, can help elucidate the curing behaviors of these oligomers. In this study, poly (ethylene glycol) dimethacrylate (PEGDMA) was used as the reactive diluent for UV-curable oligomers. Photodifferential scanning calorimetry (photo-DSC) and shrinkage measurements revealed that the curing behavior of the polymers was dependent on the size and number of molecules of PEGDMA. The effect of the small-size PEGDMA on curing behavior was greater than that of the larger molecules. Further, in most cases, the use of a larger amount of PEGDMA resulted in lower reactivity.

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Optical properties and UV-curing behaviors of optically clear PSA-TiO2 nano-composites

Cited by 34 publications

References 33 publications

UV/UV step-curing of optically clear acrylate adhesives for mobile devices

UV/UV step-curing of optically clear acrylate adhesives for mobile devices

Preparation and Characterization of a Novel Terbium Complex Coordinated with 10-Undecenoic Acid for UV-Cured Coatings

Evaluation of the Ultraviolet-Curing Kinetics of Ultraviolet-Polymerized Oligomers Cured Using Poly (Ethylene Glycol) Dimethacrylate

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