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Kim D, Kim H, Jeon W, Kim HJ, Choi J, Kim Y, Kwon MS. Ultraviolet Light Debondable Optically Clear Adhesives for Flexible Displays through Efficient Visible-Light Curing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309891. [PMID: 38146993 DOI: 10.1002/adma.202309891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/19/2023] [Indexed: 12/27/2023]
Abstract
With growing sustainability concerns, the need for products that facilitate easy disassembly and reuse has increased. Adhesives, initially designed for bonding, now face demands for selective removal, enabling rapid assembly-disassembly and efficient maintenance across industries. This need is particularly evident in the display industry, with the rise of foldable devices necessitating specialized adhesives. A novel optically clear adhesive (OCA) is presented for foldable display, featuring a unique UV-stimulated selective removal feature. This approach incorporates benzophenone derivatives into the polymer network, facilitating rapid debonding under UV irradiation. A key feature of this method is the adept use of visible-light-driven radical polymerization for OCA film fabrication. This method shows remarkable compatibility with various monomers and exhibits orthogonal reactivity to benzophenone, rendering it ideal for large-scale production. The resultant OCA not only has high transparency and balanced elasticity, along with excellent resistance to repeated folding, but it also exhibits significantly reduced adhesion when exposed to UV irradiation. By merging this customized formulation with strategically integrated UV-responsive elements, an effective solution is offered that enhances manufacturing efficiency and product reliability in the rapidly evolving field of sustainable electronics and displays. This research additionally contributes to eco-friendly device fabrication, aligning with emerging technology demands.
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Affiliation(s)
- Daewhan Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hongdeok Kim
- Department of Mechanical Design Engineering, Hanyang University, Seoul, 04763, Republic of Korea
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan, 15588, Republic of Korea
| | - Woojin Jeon
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyun-Joong Kim
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, 08826, Republic of Korea
| | - Joonmyung Choi
- Department of Mechanical Design Engineering, Hanyang University, Seoul, 04763, Republic of Korea
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan, 15588, Republic of Korea
| | - Youngdo Kim
- Mobile Display Module Development Team, Samsung Display Co., Ltd., Cheonan, 31086, Republic of Korea
| | - Min Sang Kwon
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
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You Y, Wang Z, Chen Q, Li H, Jin L, Ma K, Huang C, Xie H. Robust Vanillin-Derived Poly(thioether imidazoles) as Both a Latent Curing and Toughening Agent for One-Component Epoxy Resins. ACS Macro Lett 2023; 12:1151-1158. [PMID: 37505463 DOI: 10.1021/acsmacrolett.3c00400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
One-component epoxy resins based on latent curing agents have garnered research attention owing to their outstanding storage stability and excellent processability, while their development considerably depends on the design and preparation of sustainable latent curing agents. Herein, taking structural advantage of lignin-derived vanillin, a biobased polymerizable aromatic imidazole monomer with α,ω-diene functionality was designed and prepared, which was applicable in subsequent thiol-ene polymerization, yielding a series of robust poly(thioether imidazoles) with excellent tunability of the structure and properties. The findings indicated that the precursors comprising poly(thioether imidazole) and commercially available epoxy resins could keep their fluidity at 25 °C for over 90 days and rapidly cured into resins under elevated temperature, demonstrating that the poly(thioether imidazole) can serve as both a latent curing and toughening agent for one-component epoxy resins because of homopolymerization initiated by imidazole groups and the introduction of an aliphatic chain in the as-prepared poly(thioether imidazole) matrix.
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Affiliation(s)
- Yang You
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Zhelin Wang
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Qin Chen
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Hai Li
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Longming Jin
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Kai Ma
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, P. R. China
| | - Caijuan Huang
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
| | - Haibo Xie
- Department of Polymeric Materials & Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, P. R. China
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Sakamoto T, Suzuki Y, Matsumoto A. Precise control of thermal deprotection behavior and dismantlable adhesion property of the acrylate copolymers containing BOC-protected hydroxy group. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yanaze K, Kihara N. Superabsorbent polymer solubilized instantly by decrosslinking with sodium hypochlorite. Polym J 2021. [DOI: 10.1038/s41428-021-00499-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kihara N, Yanaze K, Yokoyama S, Kaneko M. Dissolution of a transparent cross-linked polymer monolith in water by oxidative de-crosslinking. Polym J 2019. [DOI: 10.1038/s41428-019-0220-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kudo E, Kihara N. Preparation of Nanoporous Silica Gel Using Oxidatively Degradable Polymer in Organic–Inorganic Hybrid. CHEM LETT 2019. [DOI: 10.1246/cl.190107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Eiichi Kudo
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Nobuhiro Kihara
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
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Sato E, Yuri M, Matsumoto A, Horibe H. Reductants for polyperoxides to accelerate degradation at elevated temperatures. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.01.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Wang Z, Yuan L, Ganewatta MS, Lamm ME, Rahman MA, Wang J, Liu S, Tang C. Plant Oil‐Derived Epoxy Polymers toward Sustainable Biobased Thermosets. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700009] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/10/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Zhongkai Wang
- School of Forestry and Landscape Architecture Anhui Agriculture University Hefei Anhui 230036 China
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Liang Yuan
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Mitra S. Ganewatta
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Meghan E. Lamm
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Md Anisur Rahman
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Jifu Wang
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Shengquan Liu
- School of Forestry and Landscape Architecture Anhui Agriculture University Hefei Anhui 230036 China
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
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