Preparation of biomass-based transparent pressure sensitive adhesives for optically clear adhesive and their adhesion performance

Baek, Seung-Suk; Hwang, Seok‐Ho

doi:10.1016/j.eurpolymj.2017.04.039

Cited by 42 publications

(22 citation statements)

References 24 publications

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“…A very high conversion of approximately 98% was achieved within five min of 455-nm blue LED irradiation even at a low DBM concentration of 0.1 mol% and a 4DP-IPN loading of 10 ppm. This conversion was comparable to that of conventional UV curing systems, which typically required six min for film curing [ 8 ]. The large amounts of unused DBM and Br-terminated polymers generated during bulk polymerization facilitated the photoinduced electron transfer from 4DP-IPN, which resulted in the significant increase in the film curing rate.…”

Section: Resultsmentioning

confidence: 74%

“…The peel strength (2.8–8.0 N cm −1 ) and loop tack (4.1–8.2 N cm −1 ) of the prepared PSAs indicated that the PSAs could be used as general acrylic PSAs and optically clear adhesives [ 8 , 47 , 48 , 49 ]. In particular, the PSA obtained using a DBM concentration of 0.1 mol% and a 4DP-IPN loading of 10 ppm presented both excellent creep resistance (holding time > 100 h) and transparency (98.5%), which rendered it the most suitable PSA as an optically clear adhesive for electronics.…”

Section: Resultsmentioning

confidence: 99%

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Visible-Light-Curable Solvent-Free Acrylic Pressure-Sensitive Adhesives via Photoredox-Mediated Radical Polymerization

et al. 2021

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Owing to their excellent properties, such as transparency, resistance to oxidation, and high adhesivity, acrylic pressure-sensitive adhesives (PSAs) are widely used. Recently, solvent-free acrylic PSAs, which are typically prepared via photopolymerization, have attracted increasing attention because of the current strict environmental regulations. UV light is commonly used as an excitation source for photopolymerization, whereas visible light, which is safer for humans, is rarely utilized. In this study, we prepared solvent-free acrylic PSAs via visible light-driven photoredox-mediated radical polymerization. Three α-haloesters were used as additives to overcome critical shortcomings, such as the previously reported low film curing rate and poor transparency observed during additive-free photocatalytic polymerization. The film curing rate was greatly increased in the presence of α-haloesters, which lowered the photocatalyst loadings and, hence, improved the film transparency. These results confirmed that our method could be widely used to prepare general-purpose solvent-free PSAs—in particular, optically clear adhesives for electronics.

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Section: Resultsmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Visible-Light-Curable Solvent-Free Acrylic Pressure-Sensitive Adhesives via Photoredox-Mediated Radical Polymerization

et al. 2021

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“…The specimens were allowed to adhere on the stainless‐steel substrate by applying the force of 19 N through the dual roller, to acquire the permanent tack the specimen was kept under the same load for 12 hours at room temperature. The tests were carried out by following the ASTM D330 under pulling speed of 300 mm/m 34‐37 . The results were computed for error with 10 iterations and reported with N/mm.…”

Section: Methodsmentioning

confidence: 99%

Incorporation of flame retardancy in bio‐resourced mannitol based curing agent for clear pressure‐sensitive adhesive

Gadgeel

Mhaske

2020

Polymers for Advanced Techs

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Highlights • Research involves the preparation of phosphorus modified curing agents of biobased resources and understand in the application in the clear pressure-sensitive adhesive. • A bio-based curing agent has synergic behavior of flame retardancy. • The use of a bio-based curing agent imparts thermal stability in the adhesive. • The presence of phosphorus in the structure allows the formation of intumescent char.

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“…So, OCA should basically be transparent and have a low haze. It should also be optically isotropic, with less coloring and discoloration in environmental conditions [30].…”

Section: Development In Display and Ocamentioning

confidence: 99%

Pressure-Sensitive Adhesives for Flexible Display Applications

Lee¹,

Kim²,

Lee³

et al. 2020

Hybrid Nanomaterials - Flexible Electronics Materials

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Pressure-sensitive adhesives (PSA) have been used in electronics for not only attachment of two materials but also shock absorption, thermal and electrical conductivity, electromagnetic shielding, and optical property. Optically clear adhesives (OCA) have been used as a core material for optical performance of display. In addition to basic properties of OCA such as adhesion strength, transmittance, haze, and reliability, it has required dielectric constant, gap filling, and anticorrosion according to a substrate. However, the structural and functional changes of flexible display bring challenges to OCA that protects vulnerable components such as thin-film transistor, OLED, and thin-film encapsulation by stress dispersion and adjustment of a neutral plane. At the same time, flexibility and existing properties are essential. In this chapter, the development of components and performance of OCA, and evaluation methods will be discussed.

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Preparation of biomass-based transparent pressure sensitive adhesives for optically clear adhesive and their adhesion performance

Cited by 42 publications

References 24 publications

Visible-Light-Curable Solvent-Free Acrylic Pressure-Sensitive Adhesives via Photoredox-Mediated Radical Polymerization

Visible-Light-Curable Solvent-Free Acrylic Pressure-Sensitive Adhesives via Photoredox-Mediated Radical Polymerization

Incorporation of flame retardancy in bio‐resourced mannitol based curing agent for clear pressure‐sensitive adhesive

Pressure-Sensitive Adhesives for Flexible Display Applications

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