Improving the interaction between aluminum surfaces and polymer coatings

Muñoz, Lisa; Pineda, Fabiola; Martínez, Constanza; Sancy, Mamié; Urzúa, Marcela; Flores, Marcos; Encinas, M. V.; Páez, Maritza

doi:10.1016/j.surfcoat.2018.11.051

Cited by 25 publications

(9 citation statements)

References 27 publications

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“…After that, the fluoride surface has been modified via the introduction of amine groups through a combination of plasma and silane treatment. Plasma treatment easily generates many reactive species in the form of hydroxyl, peroxy, and carboxyl groups on the surface, which are active sites for the following chemical reactions and effectively increase the bonding strength between two substrates [ 41 , 42 ]. Mandofino et al [ 43 ] indicated that when compared to the acetone cleaning, plasma treatment increased the joint strength on aluminum by 1.75 fold.…”

Section: Discussionmentioning

confidence: 99%

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

Tang

Zhao

et al. 2022

Bioactive Materials

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Magnesium alloys with integration of degradability and good mechanical performance are desired for vascular stent application. Drug-eluting coatings may optimize the corrosion profiles of magnesium substrate and reduce the incidence of restenosis simultaneously. In this paper, poly (trimethylene carbonate) (PTMC) with different molecular weight (50,000 g/mol named as PTMC5 and 350,000 g/mol named as PTMC35) was applied as drug-eluting coatings on magnesium alloys. A conventional antiproliferative drug, paclitaxel (PTX), was incorporated in the PTMC coating. The adhesive strength, corrosion behavior, drug release and biocompatibility were investigated. Compared with the PLGA control group, PTMC coating was uniform and gradually degraded from surface to inside, which could provide long-term protection for the magnesium substrate. PTMC35 coated samples exhibited much slower corrosion rate 0.05 μA/cm 2 in comparison with 0.11 μA/cm 2 and 0.13 μA/cm 2 for PLGA and PTMC5 coated counterparts. In addition, PTMC35 coating showed more stable and sustained drug release ability and effectively inhibited the proliferation of human umbilical vein vascular smooth muscle cells. Hemocompatibility test indicated that few platelets were adhered on PTMC5 and PTMC35 coatings. PTMC35 coating, exhibiting surface erosion behavior, stable drug release and good biocompatibility, could be a good candidate as a drug-eluting coating for magnesium-based stent.

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Section: Discussionmentioning

confidence: 99%

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

Tang

Zhao

et al. 2022

Bioactive Materials

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“…Ssurface treatments based on plasma have recently attracted the attention of several researchers because they are simpler, eco-friendly, and they can modify the surface, removing organic contaminants, improve the surface wettability [ 6 , 7 ], and improve the interaction between the metal and organic species [ 7 ]. Plasma can also favor the generation of free radicals on alloy surfaces [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Inert gases are used to form free radicals on the surface leaving active sites for a later reaction. On the other hand, if the plasma is an inert gas such as argon or helium, the surface can contain many stable radicals that can persist even after exposure to a reactive gas [ 7 ]. It has been shown that pretreatment with an oxygen-argon gas mixture promotes complete oxidation of the AZ91 surface resulting in a nanoporous surface [ 3 ], unlike the effect of pretreatment on other alloys, such as stainless steel, where surface roughness decreases [ 6 , 8 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, Kim used an atmospheric pressure plasma jet to modify aluminum, copper, and stainless-steel surfaces, using contact angle analysis to determine surface activation properties [ 10 ]. Mui et al [ 13 ] improved the adhesion of a polyurethane pain on an aluminum alloy, while Muñoz et al [ 7 ] improved the adhesion of a poly(methyl-methacrylate) on an AA2024 alloy with argon plasma. Xu et al [ 14 ] report an improvement in polyphenylene adhesion, and an augmentation to the fracture resistance of the composite structure.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, argon plasma at low pressure is used for the surface modification and increases the reactivity of the AZ31 magnesium alloy. This surface pretreatment could be used for improving the interaction between the surface and a future organic coating as mentioned previously [ 7 , 12 , 13 ]. Evaluation of the properties of the resultant surfaces was performed using contact angle measurement and atomic force microscopy (AFM).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Plasma Argon Pretreatment on the Surface Properties of AZ31 Magnesium Alloy

et al. 2023

Self Cite

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Climate change has evidenced the need to reduce carbon dioxide emissions into the atmosphere, and so for transport applications, lighter weight alloys have been studied, such as magnesium alloys. However, they are susceptible to corrosion; therefore, surface treatments have been extensively studied. In this work, the influence of argon plasma pretreatment on the surface properties of an AZ31 magnesium alloy focus on the enhancement of the reactivity of the surface, which was examined by surface analysis techniques, electrochemical techniques, and gravimetric measurements. The samples were polished and exposed to argon plasma for two minutes in order to activate the surface. Contact angle measurements revealed higher surface energy after applying the pretreatment, and atomic force microscopy showed a roughness increase, while X-Ray photoelectron spectroscopy showed a chemical change on the surface, where after pretreatment the oxygen species increased. Electrochemical measurements showed that surface pretreatment does not affect the corrosion mechanism of the alloy, while electrochemical impedance spectroscopy reveals an increase in the original thickness of the surface film. This increase is likely associated with the high reactivity that the plasma pretreatment confers to the surface of the AZ31 alloy, affecting the extent of oxide formation and, consequently, the increase in its protection capacity. The weight loss measurements support the effect of the plasma pretreatment on the oxide thickness since the corrosion rate of the pretreated AZ31 specimens was lower than that of those that did not receive the surface pretreatment.

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Integrated Structures from Dissimilar Materials: The Future Belongs to Aluminum–Polymer Joints

Temesi

Czigány

2020

Adv Eng Mater

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The spread of integrated structural elements and parts made from low‐density materials (for example aluminum and polymers) created a need for joining technologies with which these can be joined. Herein, the most important surface preparation methods and joining processes, with which the surface structure of aluminum can be modified and aluminum and polymer structures can be joined, are reviewed. For both topics, a new classification method is introduced: surface preparation methods are grouped based on the method of creating surface structures, whereas joining technologies are grouped according to heat input and structural changes in the polymer material. Herein, “hot” joining technologies (in which so much heat is formed that the polymer material is melted) are reviewed. This grouping category includes techniques based on friction and induction, ultrasonic and laser welding, and some in situ joining technologies. With these, materials with highly different chemical structures and melting temperatures are joined in fast cycles, in a reliable manner. In the coming years, more integrated structures containing aluminum–polymer joints manufactured with fast, automatable joining techniques (such as ultrasonic and laser welding, in compliance with the requirements of Industry 4.0) will be used throughout the industry.

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Improving the interaction between aluminum surfaces and polymer coatings

Cited by 25 publications

References 27 publications

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

Effect of Plasma Argon Pretreatment on the Surface Properties of AZ31 Magnesium Alloy

Integrated Structures from Dissimilar Materials: The Future Belongs to Aluminum–Polymer Joints

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