1
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Li Q, Weinell CE, Kiil S. Detection and Quantification of Premature Crack Formation in Curing Epoxy Coatings. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiong Li
- The Hempel Foundation Coatings Science and Technology Centre (CoaST), Department of Chemical and Biochemical Engineering, Technical University of Denmark, (DTU), Building 229, DK-2800, Kgs. Lyngby, Denmark
| | - Claus Erik Weinell
- The Hempel Foundation Coatings Science and Technology Centre (CoaST), Department of Chemical and Biochemical Engineering, Technical University of Denmark, (DTU), Building 229, DK-2800, Kgs. Lyngby, Denmark
| | - Søren Kiil
- The Hempel Foundation Coatings Science and Technology Centre (CoaST), Department of Chemical and Biochemical Engineering, Technical University of Denmark, (DTU), Building 229, DK-2800, Kgs. Lyngby, Denmark
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Water-Resistant Latex Coatings: Tuning of Properties by Polymerizable Surfactant, Covalent Crosslinking and Nanostructured ZnO Additive. COATINGS 2021. [DOI: 10.3390/coatings11030347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper deals with the development of acrylic latexes providing high-performance water-resistant coatings. For this purpose, mutual effects of anionic surfactant type (ordinary and polymerizable), covalent intra- and/or interparticle crosslinking (introduced by allyl methacrylate copolymerization and keto-hydrazide reaction, respectively) and ionic crosslinking (provided by nanostructured ZnO additive) were investigated. The latexes were prepared by the standard emulsion polymerization of methyl methacrylate, butyl acrylate and methacrylic acid as the main monomers. The addition of surface-untreated powdered nanostructured ZnO was performed during latex synthesis, resulting in stable latexes comprising dispersed nanosized additive in the content of ca 0.9−1.0 wt.% (based on solids). The coating performance with emphasis on water resistance was evaluated. It was determined that the application of the polymerizable surfactant improved coating adhesion and water-resistance, but it wasn′t able to ensure high water-resistance of coatings. Highly water-resistant coatings were obtained provided that covalent intra- and interparticle crosslinking together with ionic crosslinking were employed in the coating composition, forming densely crosslinked latex films. Moreover, coatings comprising nanostructured ZnO additive displayed a significant antibacterial activity and improved solvent resistance.
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3
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Wan H, Song D, Li X, Zhang D, Gao J, Du C. Failure Mechanisms of the Coating/Metal Interface in Waterborne Coatings: The Effect of Bonding. MATERIALS 2017; 10:ma10040397. [PMID: 28772757 PMCID: PMC5506901 DOI: 10.3390/ma10040397] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/01/2017] [Accepted: 04/06/2017] [Indexed: 11/24/2022]
Abstract
Waterborne coating is the most popular type of coating, and improving its performance is a key point of research. Cathodic delamination is one of the major modes of failure for organic coatings. It refers to the weakening or loss of adhesion between the coating and substrate. Physical and chemical characteristics of coatings have been studied via scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle measurements, Fourier transform infrared spectroscopy (FTIR), and secondary ion mass spectrometry (SIMS). Early heterogeneous swelling at the metal-coating interface in non-defective coated metals was elucidated using frequency-dependent alternating-current scanning electrochemical microscopy. Two types of coatings (styrene-acrylic coating and terpolymer coating) were compared. The effects of thickness, surface roughness, and chemical bonding on cathodic delamination were investigated.
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Affiliation(s)
- Hongxia Wan
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Dongdong Song
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
- Aerospace Research Institute of Materials and Processing Technology, Beijing 100076, China.
| | - Xiaogang Li
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
| | - Dawei Zhang
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jin Gao
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Cuiwei Du
- Institute for advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
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4
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Wan H, Song D, Li X, Zhang D, Gao J, Du C. A new understanding of the failure of waterborne acrylic coatings. RSC Adv 2017. [DOI: 10.1039/c7ra04878e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Two waterborne coatings, a styrene–acrylic coating and a terpolymer coating based on acrylic acid, vinyl chloride and 1,1-dichloroethylene segments, had their barrier properties and wet adhesion compared after immersion in 3.5 wt% NaCl solution.
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Affiliation(s)
- Hongxia Wan
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Dongdong Song
- Aerospace Research Institute of Materials and Processing Technology
- Beijing
- P. R. China
| | - Xiaogang Li
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
- Ningbo Institute of Material Technology and Engineering
| | - Dawei Zhang
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Jin Gao
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Cuiwei Du
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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5
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Albigès R, Klein P, Roi S, Stoffelbach F, Creton C, Bouteiller L, Rieger J. Water-based acrylic coatings reinforced by PISA-derived fibers. Polym Chem 2017. [DOI: 10.1039/c7py00302a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Polymerization-induced self-assembly (PISA) provides nanofibers that may be used as reinforcing fillers for all-organic aqueous coatings.
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Affiliation(s)
- Richard Albigès
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
| | - Pauline Klein
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
| | - Stéphanie Roi
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
| | - François Stoffelbach
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
| | - Costantino Creton
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Laboratoire SIMM
- 75005 Paris
| | - Laurent Bouteiller
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
| | - Jutta Rieger
- Sorbonne Universités
- UPMC Univ Paris 6
- CNRS
- Institut Parisien de Chimie Moléculaire
- Polymer Chemistry Team
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6
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Piçarra S, Fidalgo A, Fedorov A, Martinho JMG, Farinha JPS. Smart polymer nanoparticles for high-performance water-borne coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:12345-12353. [PMID: 25247636 DOI: 10.1021/la502826r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Poly(butyl methacrylate) nanoparticles encapsulating a silica precursor, tetraethoxysilane (TEOS), were synthesized by a two-step emulsion polymerization process. We show that TEOS remains mostly unreacted inside the nanoparticles in water but acts both as a plasticizer and cross-linker in films cast from the dispersions. The diffusion-enhancing plasticizing effect is dominant at annealing temperatures closer to the glass-transition temperature of the polymer, and sol-gel cross-linking reactions predominate at higher temperatures. By choosing an appropriate annealing temperature, we were able to balance polymer interdiffusion and silica cross-linking to obtain films with good mechanical properties and excellent chemical resistance. The hybrid cross-linked films produced from these novel "smart" nanoparticles can be used in water-borne environmentally friendly coatings for high-performance applications.
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Affiliation(s)
- Susana Piçarra
- IN-Institute of Nanoscience and Nanotechnology and Centro de Química-Física Molecular , Instituto Superior Técnico (Universidade de Lisboa) , 1049-001 Lisboa, Portugal
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7
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Raja TN, Brouwer AM, Nabuurs T, Tennebroek R. A fluorescence approach to investigate repartitioning of coalescing agents in acrylic polymer emulsions. Colloid Polym Sci 2012; 290:541-552. [PMID: 22523445 PMCID: PMC3326236 DOI: 10.1007/s00396-011-2575-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Revised: 12/07/2011] [Accepted: 12/09/2011] [Indexed: 12/02/2022]
Abstract
Repartitioning of co-solvents between particles of latex emulsions was investigated by means of a fluorescence method based on the detection of the amount of co-solvent via the solvatochromic shift of the emission maximum of a fluorescent probe, copolymerized at a low concentration. Complete repartitioning of co-solvents between particles of latex materials with a low Tg (ca. 25 °C) occurred within minutes. For a hydrophilic latex with a Tg of 68 °C, equilibration was achieved within an hour. Repartitioning was faster for more hydrophobic co-solvents. For a hydrophobic latex of similar Tg, co-solvent repartitioning took place on the same time scale, but complete equilibration was not reached. Possibly, there is an additional slow component in the repartitioning, or the prolonged presence of co-solvent causes a structural change in the latex particles that affects the outcome of the experiment.
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Affiliation(s)
- Tanzeela N. Raja
- University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Albert M. Brouwer
- University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Tijs Nabuurs
- DSM Coating Resins, Sluisweg 12, 5145 PE Waalwijk, The Netherlands
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Zhang X, Liu Y, Huang H, Li Y, Chen H. The diacetone acrylamide crosslinking reaction and its control of core-shell polyacrylate latices at ambient temperature. J Appl Polym Sci 2011. [DOI: 10.1002/app.34660] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Shin J, Bae W, Kim H. Synthesis of cross-linked poly(methyl methacrylate) via dispersion polymerization in supercritical carbon dioxide. Colloid Polym Sci 2009. [DOI: 10.1007/s00396-009-2157-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Quirin JC, Torkelson JM. Self-referencing fluorescence sensor for monitoring conversion of nonisothermal polymerization and nanoscale mixing of resin components. POLYMER 2003. [DOI: 10.1016/s0032-3861(02)00780-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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