Influence of self-assembling adhesion promoter on the properties of the epoxy/aluminium interphase

Phung, L.H.; Kleinert, Horst; Füssel, Uwe; Đức, Lê Minh; Rammelt, U.; Plieth, W.

doi:10.1016/j.ijadhadh.2004.07.007

Cited by 11 publications

(7 citation statements)

References 8 publications

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“…The surface chemistry of aluminum oxides is of crucial importance in the field of catalysis, corrosion, and adhesion. − While Al oxides are widely used in catalysis, Al-oxide-covered aluminum alloys are employed in the construction of lightweight automotive and aerospace parts . In most cases, oxide-covered aluminum alloys are either organically coated or adhesively bound. , In this context, the adhesion between the polymer and oxide surface plays a major role for the long-term stability of the industrial parts. Using self-assembled adhesion-promoting , monolayers, the complexity of the surface pretreatment processes could be tremendously reduced.…”

Section: Introductionmentioning

confidence: 99%

“…6 In most cases, oxide-covered aluminum alloys are either organically coated or adhesively bound. 7,8 In this context, the adhesion between the polymer and oxide surface plays a major role for the long-term stability of the industrial parts. Using self-assembled adhesionpromoting 1,9 monolayers, the complexity of the surface pretreatment processes could be tremendously reduced.…”

Section: Introductionmentioning

confidence: 99%

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Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces

2012

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Adsorption, stability, and organization kinetics of organophosphonic acids on single-crystalline alumina surfaces were investigated by means of atomic force microscopy (AFM)-based imaging, nanoshaving, and nanografting. AFM friction and phase imaging have shown that chemical etching and subsequent annealing led to heterogeneities on single-crystalline surfaces with (0001) orientation. Self-assembly and stability of octadecylphosphonic acid (ODPA) were shown to be strictly dependent upon the observed heterogeneities of the surface termination, where it was locally shown that ODPA can loosely or strongly bind on different terminations of the crystal surface. Organization kinetics of ODPA was monitored with nanografting on (0001) surfaces. Supported by measurements of surface wettability and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), it was demonstrated that the lack of organization within the protective adsorbed hexylphosphonic acid (HPA) monolayer on alumina surfaces facilitated the reduced confinement effect during nanografting, such that kinetics information on the organization process of ODPA could be obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces

2012

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“…Organophosphate SAMs can also be used as linkers to organic matrices such as pyrrole-containing molecules and graphene oxide in multicomponent systems [ 91 ]. Various phosphonic acids such as alkylphosphonic acid [ 101 ], fluorinated phosphonic acid [ 102 ], and ester-containing phosphonic acid [ 103 ] have been used to modify NAA platforms by forming organophosphorus SAMs. SAMs based on bifunctional phosphonic acids and allow further surface reactions of the terminal group with other functional molecules such as polymers, biomolecules, and small molecules [ 97 , 104 , 105 ].…”

Section: Surface Modification Of Nanoporous Anodic Alumina Photonimentioning

confidence: 99%

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

et al. 2018

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Optical sensors are a class of devices that enable the identification and/or quantification of analyte molecules across multiple fields and disciplines such as environmental protection, medical diagnosis, security, food technology, biotechnology, and animal welfare. Nanoporous photonic crystal (PC) structures provide excellent platforms to develop such systems for a plethora of applications since these engineered materials enable precise and versatile control of light–matter interactions at the nanoscale. Nanoporous PCs provide both high sensitivity to monitor in real-time molecular binding events and a nanoporous matrix for selective immobilization of molecules of interest over increased surface areas. Nanoporous anodic alumina (NAA), a nanomaterial long envisaged as a PC, is an outstanding platform material to develop optical sensing systems in combination with multiple photonic technologies. Nanoporous anodic alumina photonic crystals (NAA-PCs) provide a versatile nanoporous structure that can be engineered in a multidimensional fashion to create unique PC sensing platforms such as Fabry–Pérot interferometers, distributed Bragg reflectors, gradient-index filters, optical microcavities, and others. The effective medium of NAA-PCs undergoes changes upon interactions with analyte molecules. These changes modify the NAA-PCs’ spectral fingerprints, which can be readily quantified to develop different sensing systems. This review introduces the fundamental development of NAA-PCs, compiling the most significant advances in the use of these optical materials for chemo- and biosensing applications, with a final prospective outlook about this exciting and dynamic field.

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“…In a more recent work, aluminum substrates were first anodized in a phosphoric acid solution to create PAA. Then the PPA substrates were dip-coated in 10 −3 M aqueous solution of phosphoric acid mono-(12-hydroxy-dodecyl) ester for 5 min at room temperature [41]. EIS and the floating roller peel test were used to study the corrosion performance of PAA and PAA/AP systems.…”

Section: Phosphoric Acid Mono-(12-hydroxy-dodecyl) Estermentioning

confidence: 99%

“…It was confirmed that AP could enhance the cross-linking of the epoxy coat. The authors suggested that the AP layer was well-ordered on the surface and the strong bonding of the phosphoric acid anchor group to PAA led to the good adhesion and corrosion resistance [41].…”

Section: Phosphoric Acid Mono-(12-hydroxy-dodecyl) Estermentioning

confidence: 99%

Recent Development in Phosphonic Acid-Based Organic Coatings on Aluminum

2017

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Abstract:Research on corrosion protection of aluminum has intensified over the past decades due to environmental concerns regarding chromate-based conversion coatings and also the higher material performance requirements in automotive and aviation industries. Phosphonic acid-based organic and organic-inorganic coatings are increasingly investigated as potential replacements of toxic and inefficient surface treatments for aluminum. In this review, we have briefly summarized recent work (since 2000) on pretreatments or coatings based on various phosphonic acids for aluminum and its alloys. Surface characterization methods, the mechanism of bonding of phosphonic acids to aluminum surface, methods for accessing the corrosion behavior of the treated aluminum, and applications have been discussed. There is a clear trend to develop multifunctional phosphonic acids and to produce hybrid organic-inorganic coatings. In most cases, the phosphonic acids are either assembled as a monolayer on the aluminum or incorporated in a coating matrix on top of aluminum, which is either organic or organic-inorganic in nature. Increased corrosion protection has often been observed. However, much work is still needed in terms of their ecological impact and adaptation to the industrially-feasible process for possible commercial exploitation.

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Influence of self-assembling adhesion promoter on the properties of the epoxy/aluminium interphase

Cited by 11 publications

References 8 publications

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

Recent Development in Phosphonic Acid-Based Organic Coatings on Aluminum

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Influence of self-assembling adhesion promoter on the properties of the epoxy/aluminium interphase

Cited by 11 publications

References 8 publications

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al2O3 Single-Crystal Surfaces

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al2O3 Single-Crystal Surfaces

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

Recent Development in Phosphonic Acid-Based Organic Coatings on Aluminum

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Product

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Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces

Atomic Force Microscopy (AFM)-Based Nanografting for the Study of Self-Assembled Monolayer Formation of Organophosphonic Acids on Al₂O₃ Single-Crystal Surfaces