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Maulana S, Wibowo ES, Mardawati E, Iswanto AH, Papadopoulos A, Lubis MAR. Eco-Friendly and High-Performance Bio-Polyurethane Adhesives from Vegetable Oils: A Review. Polymers (Basel) 2024; 16:1613. [PMID: 38891559 PMCID: PMC11174640 DOI: 10.3390/polym16111613] [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: 05/13/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
Current petrochemical-based adhesives adversely affect the environment through substantial volatile organic compound (VOC) emissions during production, contributing to air pollution and climate change. In contrast, vegetable oils extracted from bio-resources provide a compelling alternative owing to their renewability, abundance, and compatibility with adhesive formulation chemistry. This review aimed to critically examine and synthesize the existing scholarly literature on environmentally friendly, sustainable, and high-performance polyurethane adhesives (PUAs) developed from vegetable oils. The use of PUAs derived from vegetable oils promises to provide a long-term replacement while simultaneously maintaining or improving adhesive properties. This quality renders these adhesives appropriate for widespread use in various sectors, including construction, automotive manufacturing, packaging, textile, and footwear industries. This review intended to perform a comprehensive assessment and integration of the existing research, thereby identifying the raw materials, strengths, weaknesses, and gaps in knowledge concerning vegetable oil-based PUAs. In doing so, it responded to these gaps and proposes potential avenues for future research. Therefore, this review accomplishes more than merely evaluating the existing research; it fosters the advancement of greener PUA technologies by identifying areas for improvement and innovation towards more sustainable industrial practices by showcasing vegetable oil-based PUAs as viable, high-performance alternatives to their petroleum-based counterparts.
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Affiliation(s)
- Sena Maulana
- Department of Forestry Engineering, Institut Teknologi Sumatera (ITERA), Bandar Lampung 35365, Indonesia;
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Bogor 16911, Indonesia;
| | - Eko Setio Wibowo
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Bogor 16911, Indonesia;
| | - Efri Mardawati
- Department of Agro-Industrial Technology, Universitas Padjadjaran, Bandung 40600, Indonesia;
- Research Collaboration Center for Biomass and Biorefinery between BRIN and Universitas Padjadjaran, Bandung 40600, Indonesia
| | - Apri Heri Iswanto
- Department of Forest Products Technology, Faculty of Forestry, Universitas Sumatera Utara, Medan 20355, Indonesia;
| | - Antonios Papadopoulos
- Laboratory of Wood Chemistry and Technology, Department of Forestry and Natural Environment, Democritus University of Thrace, GR-66100 Drama, Greece
| | - Muhammad Adly Rahandi Lubis
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Bogor 16911, Indonesia;
- Research Collaboration Center for Biomass and Biorefinery between BRIN and Universitas Padjadjaran, Bandung 40600, Indonesia
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2
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Rayung M, Ghani NA, Hasanudin N. A review on vegetable oil-based non isocyanate polyurethane: towards a greener and sustainable production route. RSC Adv 2024; 14:9273-9299. [PMID: 38505386 PMCID: PMC10949916 DOI: 10.1039/d3ra08684d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Abstract
The transition from conventional polyurethane (PU) to non isocyanate polyurethane (NIPU) is driven mainly by safety concerns, environmental considerations, and sustainability issues associated with the current PU technology. NIPU has emerged as a promising alternative, addressing limitations related to traditional PU production. There has been increasing interest in bio-based NIPU aligning with the aspiration for green materials and processes. One important biomass resource for the development of bio-based NIPU is vegetable oil, an abundant, renewable, and relatively low cost feedstock. As such, this review aims to provide insight into the progression of NIPU derived from vegetable oils. This article highlights the synthetic and green approach to NIPU production, emphasizing the method involving the polyaddition reaction of cyclic carbonates and amines. The review includes case studies on vegetable oil-based NIPU and perspectives on their properties. Further, discussions on the potential applications and commercial importance of PU and NIPU are included. Finally, we offer perspectives on possible research directions and the future prospects of NIPU, contributing to the ongoing evolution of PU technology.
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Affiliation(s)
- Marwah Rayung
- School of Wood Industry, Faculty of Applied Sciences, Universiti Teknologi MARA, Cawangan Pahang Kampus Jengka 26400 Bandar Tun Razak Pahang Malaysia
| | - Noraini Abd Ghani
- Centre of Research in Ionic Liquids, Universiti Teknologi PETRONAS Seri Iskandar 32610 Perak Malaysia
- Fundamental and Applied Science Department, Universiti Teknologi PETRONAS Seri Iskandar 32610 Perak Malaysia
| | - Norhafizah Hasanudin
- Terra Mineral Lab Sdn Bhd Level 16, Perak Techno Trade Centre Bandar Meru Jaya, Off Jalan Jelapan Ipoh 30020 Perak Darul Ridzuan Malaysia
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3
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Mangal M, H S, Bose S, Banerjee T. Innovations in applications and prospects of non-isocyanate polyurethane bioplastics. Biopolymers 2023; 114:e23568. [PMID: 37846654 DOI: 10.1002/bip.23568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/18/2023]
Abstract
Currently, conventional plastics are necessary for a variety of aspects of modern daily life, including applications in the fields of healthcare, technology, and construction. However, they could also contain potentially hazardous compounds like isocyanates, whose degradation has a negative impact on both the environment and human health. Therefore, researchers are exploring alternatives to plastic which is sustainable and environmentally friendly without compromising its mechanical and physical features. This review study highlights the production of highly eco-friendly bioplastic as an efficient alternative to non-biodegradable conventional plastic. Bioplastics are produced from various renewable biomass sources such as plant debris, fatty acids, and oils. Poly-addition of di-isocyanates and polyols is a technique employed over decades to produce polyurethanes (PUs) bioplastics from renewable biomass feedstock. The toxicity of isocyanates is a major concern with the above-mentioned approach. Novel green synthetic approaches for polyurethanes without using isocyanates have been attracting greater interest in recent years to overcome the toxicity of isocyanate-containing raw materials. The polyaddition of cyclic carbonates (CCs) and polyfunctional amines appears to be the most promising method to obtain non-isocyanate polyurethanes (NIPUs). This method results in the creation of polymeric materials with distinctive and adaptable features with the elimination of harmful compounds. Consequently, non-isocyanate polyurethanes represent a new class of green polymeric materials. In this review study, we have discussed the possibility of creating novel NIPUs from renewable feedstocks in the context of the growing demand for efficient and ecologically friendly plastic products.
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Affiliation(s)
- Mangal Mangal
- Department of Chemical Engineering, Indian Institute of Technology, Guwahati, Assam, India
| | - Supriya H
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, India
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, India
| | - Tamal Banerjee
- Department of Chemical Engineering, Indian Institute of Technology, Guwahati, Assam, India
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4
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Speidel AT, Chivers PRA, Wood CS, Roberts DA, Correia IP, Caravaca AS, Chan YKV, Hansel CS, Heimgärtner J, Müller E, Ziesmer J, Sotiriou GA, Olofsson PS, Stevens MM. Tailored Biocompatible Polyurethane-Poly(ethylene glycol) Hydrogels as a Versatile Nonfouling Biomaterial. Adv Healthc Mater 2022; 11:e2201378. [PMID: 35981326 PMCID: PMC7615486 DOI: 10.1002/adhm.202201378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/28/2022] [Indexed: 01/28/2023]
Abstract
Polyurethane-based hydrogels are relatively inexpensive and mechanically robust biomaterials with ideal properties for various applications, including drug delivery, prosthetics, implant coatings, soft robotics, and tissue engineering. In this report, a simple method is presented for synthesizing and casting biocompatible polyurethane-poly(ethylene glycol) (PU-PEG) hydrogels with tunable mechanical properties, nonfouling characteristics, and sustained tolerability as an implantable material or coating. The hydrogels are synthesized via a simple one-pot method using commercially available precursors and low toxicity solvents and reagents, yielding a consistent and biocompatible gel platform primed for long-term biomaterial applications. The mechanical and physical properties of the gels are easily controlled by varying the curing concentration, producing networks with complex shear moduli of 0.82-190 kPa, similar to a range of human soft tissues. When evaluated against a mechanically matched poly(dimethylsiloxane) (PDMS) formulation, the PU-PEG hydrogels demonstrated favorable nonfouling characteristics, including comparable adsorption of plasma proteins (albumin and fibrinogen) and significantly reduced cellular adhesion. Moreover, preliminary murine implant studies reveal a mild foreign body response after 41 days. Due to the tunable mechanical properties, excellent biocompatibility, and sustained in vivo tolerability of these hydrogels, it is proposed that this method offers a simplified platform for fabricating soft PU-based biomaterials for a variety of applications.
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Affiliation(s)
- Alessondra T Speidel
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Phillip R A Chivers
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Christopher S Wood
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Derrick A Roberts
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Inês P Correia
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - April S Caravaca
- Laboratory of Immunobiology, Stockholm Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Yu Kiu Victor Chan
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Catherine S Hansel
- Science for Life Laboratory, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Johannes Heimgärtner
- Science for Life Laboratory, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Eliane Müller
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Jill Ziesmer
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Georgios A Sotiriou
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Peder S Olofsson
- Laboratory of Immunobiology, Stockholm Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, Stockholm, 171 77, Sweden
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Manhasset, NY, 11030, USA
| | - Molly M Stevens
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 171 77, Sweden
- Department of Materials, Department of Bioengineering, and Institute for Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
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5
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MacInnis CM, Younes GR, Marić M. The effect of polyhedral oligomeric silsesquioxane fillers in
non‐isocyanate
polyurethane hybrid resins. J Appl Polym Sci 2022. [DOI: 10.1002/app.53225] [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)
- Carlee M. MacInnis
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Georges R. Younes
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Milan Marić
- Department of Chemical Engineering McGill University Montreal Quebec Canada
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6
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Chukanova OM, Sheverdenkina OG, Kapasharov AT, Chernyak AV, Sedov IV. Formation of Polyhydroxyurethanes in the Reaction of Carbon Dioxide with Diepoxides and Diamines in the Presence of a Chromium Complex. KINETICS AND CATALYSIS 2022. [DOI: 10.1134/s0023158422050020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Li H, Cheng H, Zhao F. A Review on CO
2
‐Based Polyureas and Polyurea Hybrids. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200338] [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]
Affiliation(s)
- Hui Li
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
- Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Haiyang Cheng
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Fengyu Zhao
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
- Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
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8
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Ren C, Spannenberg A, Werner T. Synthesis of Bifunctional Phosphonium Salts Bearing Perfluorinated Side Chains and Their Application in the Synthesis of Cyclic Carbonates from Epoxides and CO2. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Changyue Ren
- Leibniz Institute for Catalysis: Leibniz-Institut fur Katalyse eV Organocatalysis GERMANY
| | - Anke Spannenberg
- Leibniz Institute for Catalysis: Leibniz-Institut fur Katalyse eV Analytics GERMANY
| | - Thomas Werner
- Leibniz-Institut für Katalyse e.V. Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock GERMANY
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9
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Quienne B, Pinaud J, Caillol S. Synthesis of hydrophobically modified ethoxylated non-isocyanate urethanes (HENIURs) and their use as rheology additives. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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11
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Bizet B, Grau E, Asua JM, Cramail H. Hybrid – Non‐Isocyanate Polyurethanes (H‐NIPUs): A pathway Towards a Broad Range of Novel Materials. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100437] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Boris Bizet
- LCPO – UMR 5629, Université de Bordeaux – CNRS – Bordeaux INP 16 Avenue Pey Berland Bât. A Pessac 33607 France
- POLYMAT University of the Basque Country UPV/EHU Joxe Mari Korta Center, Avenida Tolosa 72 Donostia – San Sebastián 20018 Spain
| | - Etienne Grau
- LCPO – UMR 5629, Université de Bordeaux – CNRS – Bordeaux INP 16 Avenue Pey Berland Bât. A Pessac 33607 France
| | - José M. Asua
- POLYMAT University of the Basque Country UPV/EHU Joxe Mari Korta Center, Avenida Tolosa 72 Donostia – San Sebastián 20018 Spain
| | - Henri Cramail
- LCPO – UMR 5629, Université de Bordeaux – CNRS – Bordeaux INP 16 Avenue Pey Berland Bât. A Pessac 33607 France
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12
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Ni J, Lanzi M, Kleij AW. Unusual DBU-catalyzed decarboxylative formation of allylic thioethers from vinyl cyclic carbonates and thiols. Org Chem Front 2022. [DOI: 10.1039/d2qo01511k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Vinyl cyclic carbonates undergo an exo-cyclic attack by thiol nucleophiles under DBU catalysis to form allylic thioether products in moderate to good yields through a decarboxylative process under attractive process conditions.
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Affiliation(s)
- Jixiang Ni
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science & Technology (BIST), Av. Països Catalans 16, 43007 – Tarragona, Spain
| | - Matteo Lanzi
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science & Technology (BIST), Av. Països Catalans 16, 43007 – Tarragona, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science & Technology (BIST), Av. Països Catalans 16, 43007 – Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluis Companys 23, 08010 – Barcelona, Spain
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13
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Gomez-Lopez A, Elizalde F, Calvo I, Sardon H. Trends in non-isocyanate polyurethane (NIPU) development. Chem Commun (Camb) 2021; 57:12254-12265. [PMID: 34709246 DOI: 10.1039/d1cc05009e] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The transition towards safer and more sustainable production of polymers has led to a growing body of academic research into non-isocyanate polyurethanes (NIPUs) as potential replacements for conventional, isocyanate-based polyurethane materials. This perspective article focuses on the opportunities and current limitations of NIPUs produced by the reaction between biobased cyclic carbonates with amines, which offers an interesting pathway to renewable NIPUs. While it was initially thought that due to the similarities in the chemical structure, NIPUs could be used to directly replace conventional polyurethanes (PU), this has proven to be more challenging to achieve in practice. As a result, and in spite of the vast amount of academic research into this topic, the market size of NIPUs remains negligible. In this perspective, we will emphasize the main limitations of NIPUs in comparison to conventional PUs and the most significant advances made by others and us to overcome these limitations. Finally, we provide our personal view of where research should be directed to promote the transition from the academic to the industrial sector.
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Affiliation(s)
- Alvaro Gomez-Lopez
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Fermin Elizalde
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Iñigo Calvo
- ORIBAY Group Automotive S.L. R&D Department, Portuetxe bidea 18, 20018, Donostia-San Sebastián, Spain
| | - Haritz Sardon
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
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14
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Guerrero-Alburquerque N, Zhao S, Rentsch D, Koebel MM, Lattuada M, Malfait WJ. Ureido Functionalization through Amine-Urea Transamidation under Mild Reaction Conditions. Polymers (Basel) 2021; 13:1583. [PMID: 34069157 PMCID: PMC8156039 DOI: 10.3390/polym13101583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/05/2021] [Accepted: 05/07/2021] [Indexed: 01/24/2023] Open
Abstract
Ureido-functionalized compounds play an indispensable role in important biochemical processes, as well as chemical synthesis and production. Isocyanates, and KOCN in particular, are the preferred reagents for the ureido functionalization of amine-bearing compounds. In this study, we evaluate the potential of urea as a reagent to graft ureido groups onto amines at relatively low temperatures (<100 °C) in aqueous media. Urea is an inexpensive, non-toxic and biocompatible potential alternative to KOCN for ureido functionalization. From as early as 1864, urea was the go-to reagent for polyurea polycondensation, before falling into disuse after the advent of isocyanate chemistry. We systematically re-investigate the advantages and disadvantages of urea for amine transamidation. High ureido-functionalization conversion was obtained for a wide range of substrates, including primary and secondary amines and amino acids. Reaction times are nearly independent of substrate and pH, but excess urea is required for practically feasible reaction rates. Near full conversion of amines into ureido can be achieved within 10 h at 90 °C and within 24 h at 80 °C, and much slower reaction rates were determined at lower temperatures. The importance of the urea/amine ratio and the temperature dependence of the reaction rates indicate that urea decomposition into an isocyanic acid or a carbamate intermediate is the rate-limiting step. The presence of water leads to a modest increase in reaction rates, but the full conversion of amino groups into ureido groups is also possible in the absence of water in neat alcohol, consistent with a reaction mechanism mediated by an isocyanic acid intermediate (where the water assists in the proton transfer). Hence, the reaction with urea avoids the use of toxic isocyanate reagents by in situ generation of the reactive isocyanate intermediate, but the requirement to separate the excess urea from the reaction product remains a major disadvantage.
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Affiliation(s)
- Natalia Guerrero-Alburquerque
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (N.G.-A.); (S.Z.); (M.M.K.)
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland;
| | - Shanyu Zhao
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (N.G.-A.); (S.Z.); (M.M.K.)
| | - Daniel Rentsch
- Laboratory for Functional Polymers, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland;
| | - Matthias M. Koebel
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (N.G.-A.); (S.Z.); (M.M.K.)
| | - Marco Lattuada
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland;
| | - Wim J. Malfait
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (N.G.-A.); (S.Z.); (M.M.K.)
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15
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Abstract
This paper provides a synthetic and comprehensive overview on environmentally friendly anticorrosive polymeric coatings. Firstly, the economic and environmental impact of corrosion is presented to highlight the need of anticorrosive polymeric coatings as a flexible and effective solution to protect a metal. Secondly, the implementation of regulations together with the consumer awareness for environmental considerations and protection of health are the driving force for a progressive but significant change in the sector. Therefore, within the protective organic coatings market, this article provides a review of the most recent developments in environmentally friendly solutions, including bio-based and water-borne epoxy, hyperbranched polyester for low- volatile organic compounds (VOC) coatings, waterborne polyurethane and non-isocyanate polyurethanes (NIPUs), and graphene or bio-based fillers for acrylics. Moreover, this paper outlines new trends such as smart additives, bio-based corrosion inhibitors, and functional antibiocorrosive coatings as superhydrophobics. Finally, industrially relevant applications of environmentally friendly anticorrosive polymeric coatings including solutions for marine and off-shore industries are summarized.
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16
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17
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Ni J, Cristòfol À, Kleij AW. Formation of β-cyano-ketones through cyanide-promoted ring-opening of cyclic organic carbonates. Org Chem Front 2021. [DOI: 10.1039/d1qo00770j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In an unusual cascade process involving KCN, vinyl cyclic carbonates are converted into β-cyano ketones with the subsequent extrusion of carbon dioxide and acetonitrile facilitating a Michael addition to an intermediate α,β-unsaturated ketone.
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Affiliation(s)
- Jixiang Ni
- Institute of Chemical Research of Catalonia (ICIQ)
- Barcelona Institute of Science & Technology (BIST)
- 43007 – Tarragona
- Spain
| | - Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ)
- Barcelona Institute of Science & Technology (BIST)
- 43007 – Tarragona
- Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ)
- Barcelona Institute of Science & Technology (BIST)
- 43007 – Tarragona
- Spain
- Catalan Institute of Research and Advanced Studies (ICREA)
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18
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