1
|
Nakagawa J, Morinaga S, Kaneko Y. Preparation of Antifog Hard Coatings Based on Carboxy-Functionalized Polyhedral Oligomeric Silsesquioxane Cross-Linked with Oligo(ethylene glycol)s. ACS OMEGA 2024; 9:28895-28902. [PMID: 38973926 PMCID: PMC11223240 DOI: 10.1021/acsomega.4c03563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/07/2024] [Accepted: 06/07/2024] [Indexed: 07/09/2024]
Abstract
In this study, we prepared antifog hard coatings by heating a mixture of carboxy-functionalized polyhedral oligomeric silsesquioxane (POSS-C) and oligo(ethylene glycol)s (OEGs, HO(CH2CH2O) n H, n = 1-6) in N,N-dimethylformamide, applying the mixture onto a glass substrate, and subsequently removing the solvent via heating. In addition, we evaluated the water resistance, hardness, and antifogging performance of the coatings. In particular, the coating produced at a 2:1 functional group ratio of POSS-C to tetraethylene glycol (OEG, n = 4) coating exhibited high surface hardness (6H), as determined using pencil scratch testing. The coating remained clear after exposure to the vapor of warm water at 40 °C at a height of 2 cm for 10 s, demonstrating its antifogging property. Furthermore, no dissolution or cracking was observed when the POSS-C/OEG coating (n = 4, COOH/OH = 2:1) was immersed in water at room temperature for 1 h, confirming its water resistance. The Fourier transform infrared/attenuated total reflectance results showed the formation of ester bonds, indicating the construction of a network structure that enhanced the water resistance and hardness of the coating.
Collapse
Affiliation(s)
- Jun Nakagawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Seiya Morinaga
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Yoshiro Kaneko
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| |
Collapse
|
2
|
Czakaj J, Sztorch B, Romanczuk-Ruszuk E, Brząkalski D, Przekop RE. Organosilicon Compounds in Hot-Melt Adhesive Technologies. Polymers (Basel) 2023; 15:3708. [PMID: 37765562 PMCID: PMC10534555 DOI: 10.3390/polym15183708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Hot-melt adhesives (HMAs) are thermoplastic materials that can bond various substrates by solidifying rapidly upon cooling from the molten state, and their modification with organosilicon compounds can result in crosslinking behavior, characteristic of gels. Organosilicon compounds are hybrid molecules that have both inorganic and organic components and can enhance the properties and performance of HMAs. The gel aspect of HMA with and without organosilicon modifiers can be considered in organosilicon-modified systems, the modifiers are often either sol-gel condensation products or their mechanism of action on the adherent surface can be considered of sol-gel type. The purpose of this manuscript is to present the current state of the art on the formulation, characterization, and application of HMAs and optimize their performance with organosilicon compounds for application in various industries such as automotive, construction, and photovoltaics. This review covers articles published within the period of 2018-2022. The article is divided into sections, in which information about hot-melt adhesives is described at the beginning. The following part of the presented review focuses on the composition of hot-melt adhesives, which takes into account the use of organosilicon compounds. The last part of this review outlines the future trends in hot-melt adhesives.
Collapse
Affiliation(s)
- Jakub Czakaj
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland; (B.S.); (D.B.)
- Almara Sp. Z o.o. Sp.k., 3/627 Mozarta, 02-736 Warsaw, Poland
| | - Bogna Sztorch
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland; (B.S.); (D.B.)
- Almara Sp. Z o.o. Sp.k., 3/627 Mozarta, 02-736 Warsaw, Poland
| | - Eliza Romanczuk-Ruszuk
- Institute of Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C Street, 15-351 Bialystok, Poland;
| | - Dariusz Brząkalski
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland; (B.S.); (D.B.)
| | - Robert E. Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland; (B.S.); (D.B.)
| |
Collapse
|
3
|
Fitzgerald DM, Colson YL, Grinstaff MW. Synthetic Pressure Sensitive Adhesives for Biomedical Applications. Prog Polym Sci 2023; 142:101692. [PMID: 37273788 PMCID: PMC10237363 DOI: 10.1016/j.progpolymsci.2023.101692] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Pressure sensitive adhesives are components of everyday products found in homes, offices, industries, and hospitals. Serving the general purpose of fissure repair and object fixation, pressure sensitive adhesives indiscriminately bind surfaces, as long as contact pressure is administered at application. With that being said, the chemical and material properties of the adhesive formulation define the strength of a pressure sensitive adhesive to a particular surface. Given our increased understanding of the viscoelastic material requirements as well as the intermolecular interactions at the binding interface required for functional adhesives, pressure sensitive adhesives are now being explored for greater use. New polymer formulations impart functionality and degradability for both internal and external applications. This review highlights the structure-property relationships between polymer architecture and pressure sensitive adhesion, specifically for medicine. We discuss the rational, molecular-level design of synthetic polymers for durable, removable, and biocompatible adhesion to wet surfaces like tissue. Finally, we examine prevalent challenges in biomedical wound closure and the new, innovative strategies being employed to address them. We conclude by summarizing the progress of current research, identifying additional clinical opportunities, and discussing future prospects.
Collapse
Affiliation(s)
- Danielle M. Fitzgerald
- Department of Chemistry, Biomedical Engineering, and Medicine, Boston University, Boston, MA 02115
| | - Yolonda L. Colson
- Division of Thoracic Surgery, Department of Surgery, Massachusetts General Hospital, Boston, MA 02214
| | - Mark W. Grinstaff
- Department of Chemistry, Biomedical Engineering, and Medicine, Boston University, Boston, MA 02115
| |
Collapse
|
4
|
Paiva MF, Rizk M, Pessan JP, Kreutz M, Rohland B, Biehl R, Stadler A, Stellbrink J, Wiegand A. Material properties and bioactivity of a resin infiltrant functionalized with polyhedral oligomeric silsesquioxanes. Dent Mater 2022; 38:1900-1909. [DOI: 10.1016/j.dental.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/26/2022] [Accepted: 09/25/2022] [Indexed: 11/28/2022]
|
5
|
Adhesive Films Based on Benzoxazine Resins and the Photoreactive Epoxyacrylate Copolymer. MATERIALS 2022; 15:ma15051839. [PMID: 35269070 PMCID: PMC8911751 DOI: 10.3390/ma15051839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/24/2022] [Accepted: 02/26/2022] [Indexed: 11/30/2022]
Abstract
UV-cross-linkable and thermally curable self-adhesive structural tapes (SATs) were compounded using solid commercial benzoxazine resins (Araldite MT 35700 and Araldite MT 35910) and a photoreactive epoxyacrylate copolymer (EAC). As initiators of benzoxazine resin polymerization and epoxy component cationic polymerization, two kinds of latent curing agents (LCAs) were tested, i.e., amine type and ionic liquid type. The influence of the benzoxazine resin and the LCA type on the UV-cross-linking process, the self-adhesive features and thermal curing behavior of UV-cross-linked tapes, as well as the shear strength of cured aluminum/SAT/aluminum joints and thermal stability of adhesives were investigated. It was found that the amine additive and the benzoxazine resin take part in the UV-cross-linking process of the EAC as hydrogen donors, which is confirmed by an increase in cohesion (+86%) and a decrease in adhesion (−25%) of SATs. The highest results of adhesion to steel (47 N/25 mm) and overlap shear strength (11.1 MPa) values were registered for SATs based on Araldite MT 35910 and contained 7.5 wt. parts of the amine-type hardener. The formation of a polyacrylate-benzoxazine network has a significant impact on the course of the thermal curing process and the thermomechanical properties of adhesive joints, which was also confirmed by the Cure Index calculation.
Collapse
|
6
|
Li M, Wang C, Wang D, Li J. Structure-Dependent Photoluminescence of Europium(III) Coordination Oligomeric Silsesquioxane: Synthesis and Mechanism. ACS OMEGA 2021; 6:227-238. [PMID: 33458475 PMCID: PMC7807471 DOI: 10.1021/acsomega.0c04365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/18/2020] [Indexed: 05/08/2023]
Abstract
The coordination environment of Eu3+ is a crucial factor in the optical performance of the complex. Herein, a new kind of oligomeric silsesquioxane was employed to improve the coordination environment of central ions, the luminescence intensity of which was greatly enhanced with an efficient emission peak at 619 nm. More importantly, the photoluminescent properties of the product will be altered because of the formation of the Si-O-Si structure. The relevant mechanism has also been investigated and proposed by a series of characterization analyses. Additionally, the fluorescence lifetime, intrinsic quantum yield, and energy transfer efficiency were calculated. In addition, the observed trend of Judd-Ofelt intensity parameters was used to justify the coordination environment of Eu3+ ions. The experimental results reveal that the sol-gel reaction of the ligands can effectively promote intramolecular energy transfer. In addition, we introduced four theory modules of ligands (LSi, LSi-1, LSi-2, and LSi-3) with certain rules of formation of Si-O-Si, and density functional theory (DFT) and time-dependent DFT (TD-DFT) were used to explore their excited electron transfer process and their electronic absorption spectra, combined with Marcus theory. The calculated results show that the sol-gel reaction will induce the separation of the distribution of excited holes and electrons, leading to an efficient charge-transfer (CT) process. The predictable results were in good accordance with the experimental findings. Consequently, the sol-gel reaction occurring among ligands will be attributed to an efficient CT process, leading to a strong luminescence intensity, as observed experimentally.
Collapse
Affiliation(s)
- Ming Li
- Key
Laboratory of Bio-based Material Science and Technology of Ministry
of Education, Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China
- Material
Science and Engineering College Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China
| | - Chengyu Wang
- Key
Laboratory of Bio-based Material Science and Technology of Ministry
of Education, Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China
| | - Di Wang
- Key
Laboratory of Bio-based Material Science and Technology of Ministry
of Education, Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China
| | - Jian Li
- Key
Laboratory of Bio-based Material Science and Technology of Ministry
of Education, Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China
| |
Collapse
|
7
|
Gziut K, Kowalczyk A, Schmidt B, Kowalczyk K, Weisbrodt M. Epoxy-Based Structural Self-Adhesive Tapes Modified with Acrylic Syrups Prepared via a Free Radical Photopolymerization Process. Polymers (Basel) 2021; 13:polym13020189. [PMID: 33430233 PMCID: PMC7825735 DOI: 10.3390/polym13020189] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 12/30/2020] [Accepted: 01/03/2021] [Indexed: 11/25/2022] Open
Abstract
New modifiers (i.e., acrylic syrups; ASs) of epoxy-resin-based thermally curable structural self-adhesive tapes (SATs) were prepared via a free radical bulk polymerization (FRBP) of n-butyl acrylate, butyl methacrylate, glycidyl methacrylate, and hydroxybutyl acrylate. In the process, two kinds of UV-photoinitiators (i.e., monoacylphosphine oxide/Omnirad TPO and bisacylphosphine oxide/Omnirad 819) and various mixing speed of the monomers mixture (200–1000 rpm) were applied. The TPO-based syrups exhibited a lower copolymers content (10–24 wt%), dynamic viscosity (<0.1 Pa·s), molecular weights (Mn and Mw, and polydispersity (1.9–2.5) than these with Omnirad 819. Additionally, the higher mixing speed significantly reduced monomers conversion and viscosity of ASs as well as molecular weights of the acrylate copolymers. These parameters influenced the properties of thermally uncured (e.g., adhesion) and thermally cured SATs (shear strength of aluminum/SAT/aluminum overlap joints). Better self-adhesive features were observed for SATs-TPO (based on ASs with lower monomers conversion, Mn and Mw); however, a slightly higher shear strength was noted for the thermally cured SAT-819 (ASs with higher monomers conversion, Mn and Mw). An impact of polydispersity of the acrylate copolymers as well as crosslinking degree of thermally cured SATs on the mechanical strength was also revealed.
Collapse
|
8
|
Gziut K, Kowalczyk A, Schmidt B. Free-Radical Bulk-Photopolymerization Process as a Method of Obtaining Thermally Curable Structural Self-Adhesive Tapes and Effect of Used Type I Photoinitiators. Polymers (Basel) 2020; 12:polym12102191. [PMID: 32987966 PMCID: PMC7601257 DOI: 10.3390/polym12102191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 11/16/2022] Open
Abstract
A new fabrication method for thin (120 µm) thermally curable structural self-adhesive tapes (SATs) was demonstrated by utilizing a series of acrylic syrups (ASs) modified using Bisphenol A-based liquid epoxy resin. The acrylic syrups containing poly(butyl acrylate-co-butyl methacrylate-co-glycidyl methacrylate-co-2-hydroxyetyl acrylate-co-4-acryloyloxy benzophenone) were synthesized via free-radical bulk-photopolymerization (FRBP) process. Influence of different type I radical photoinitiators (PIs), i.e., α-hydroxyalkylphenones (HPs), acylphosphine oxides (APOs) and its mixtures (HPs/APOs and APO/APO) on selected physico-chemical features of obtained ASs was studied. It turned out that APO-type PIs are more effective in the FRBP process (NMR studies). Self-adhesive tests of SATs revealed that the monomers’ conversion in ASs have a significant influence on adhesion and tack. Moreover, the polymer structures formed at the UV cross-linking stage of SATs significantly affect the cross-linking degree of SATs during thermal curing (differential scanning calorimetry method). The highest values of overlap shear strength were achieved by SATs based on ASs with monomers’ conversion on the level 50–60%.
Collapse
|
9
|
Moriizumi Y, Fukuda H, Tanaka S, Tanaka D, Nagai K. Temperature dependence of methanol and ethanol vapor sorption in polyhedral oligomeric silsesquioxane (
POSS
) containing methacrylate membranes. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Hajime Fukuda
- Department of Applied Chemistry Meiji University Kawasaki Japan
| | - Seiya Tanaka
- Department of Applied Chemistry Meiji University Kawasaki Japan
| | - Daisuke Tanaka
- Department of Applied Chemistry Meiji University Kawasaki Japan
| | - Kazukiyo Nagai
- Department of Applied Chemistry Meiji University Kawasaki Japan
| |
Collapse
|
10
|
Analysis of the Stereoisomers (cis, trans) of Polyhedral Oligomeric Silsesquioxane Compounds by UHPSFC-QTof MS. Chromatographia 2020. [DOI: 10.1007/s10337-020-03859-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|