A novel organic-inorganic PMMA/polysilazane hybrid polymer for corrosion protection

Coan, T. E.; Barroso, Gilvan; Machado, Ricardo Antônio Francisco; Souza, Fernando S. de; Spinelli, Almir; Motz, Günter

doi:10.1016/j.porgcoat.2015.09.011

Cited by 55 publications

(29 citation statements)

References 73 publications

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“…and 85°, respectively. These results are higher to the neat PMMA reported in different reports [40][41][42][43] and in good agreement with previous research where a water contact angle of c.a. 81°…”

Section: Clsm and Sem/edssupporting

confidence: 92%

Dispersion of upconverting nanostructures of CePO4 using rod and semi-spherical morphologies into transparent PMMA/PU IPNs by the sequential route

Palma‐Ramírez

Domínguez‐Crespo

Torres‐Huerta

et al. 2018

Polymer

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Upconverting luminescent poly(methylmethacrylate)(PMMA)/poly(urethane)(PU) interpenetrating polymer network (IPN) nanohybrids were prepared using a sequential polymerisation incorporating different wt.% of cerium phosphate (CePO 4) nanoparticles. The effect of miscibility/compatibility of the different PMMA/PU ratios, the addition and dispersion of rod and semi-spherical nanostructures in as well as the performance of selected IPNs under accelerated aging were studied using morphological, emission, thermal and mechanical studies. Structural studies revealed that there were physical interactions between C=O groups and CePO 4 in PMMA/PU IPNs. The addition of a higher wt.% of nanostructures was found to decrease the transparency of the IPNs. Resulting PMMA/PU/CePO 4 IPN nanohybrids are photoluminescent under UV-light, supporting the prolongate of lifetime while maintaining the mechanical properties after being subjected to accelerated weathering. The addition of semi-spherical particles resulted in a more stable materials after accelerated weathering than nanorods.

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Section: Clsm and Sem/edssupporting

confidence: 92%

Dispersion of upconverting nanostructures of CePO4 using rod and semi-spherical morphologies into transparent PMMA/PU IPNs by the sequential route

Palma‐Ramírez

Domínguez‐Crespo

Torres‐Huerta

et al. 2018

Polymer

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“…40,41 Other researchers have observed the same behavior in PMMA-SiO 2 hybrid coatings; they attributed the good adhesion between films and substrates to the formation of metal−O−Si chemical bonds between the reactive functional groups of silane precursors and hydroxyl groups found on the surface of the substrates. 40,41 Wettability is an important surface property to be taken into consideration. Table 2 shows values and images of TWC and S0M surface wettability samples obtained after the contact angle (q), based on the sessile drop method.…”

Section: Surface Characterizationmentioning

confidence: 66%

“…The formation of a well-crosslinked coating hindered the diffusion of potentially corrosive species at the coating/ metal interface. 40 The hydrophobicity degree of the surface was directly associated with its corrosion resistance ability; this characteristic was proportional to the contact angle formed by sessile liquid drops on a coated metal surface. 42 The higher contact angle value recorded for the S0M coating was attributed to the performance of the herein prepared hybrid coating, which protected it against corrosion due to the formation of a sufficient crosslinking physical barrier during polycondensation reactions.…”

Section: Surface Characterizationmentioning

confidence: 99%

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Santana

Kunst

Oliveira

et al. 2020

J. Braz. Chem. Soc.

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Siloxane-poly(methyl methacrylate) (PMMA) hybrid was synthesized based on the sol-gel method and applied to Ti-6Al-4V through dip-coating. The structural feature of the hybrid was subjected to Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG); its morphological properties were analyzed through scanning electron microscope (SEM), energy dispersive spectrometry (EDS), atomic force microscopy (AFM) and contact angle. The electrochemical behavior and corrosion resistance of both the hybrid coating and the uncoated substrate were investigated based on electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET). Results showed homogeneous coating formation due to the rigid hybrid network formed during polymerization, hydrolysis and condensation reactions. This outcome suggested interaction between the organic (methyl methacrylate (MMA)) and inorganic (tetraethyl orthosilicate (TEOS)) phases, which was favored by the coupling agent (3-(trimethoxysilyl)propyl methacrylate (TMSM)). The S0M (PMMA-SiO 2 hybrid Ti-6Al-4V coated alloy) film presented regular topography and adherence to the substrate. Electrochemical simulated body fluid (SBF) tests showed that the hybrid coating presented better barrier properties (168 h of the immersion time) than the uncoated substrate, fact that makes it an interesting material for anti-corrosive applications in biomaterials.

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“…Hybrid polymers are a well-known class of polymers that can be designed by carrying two or more different functional groups which related to specific groups of normal types of polymers such as polyamines, polyesters, polyketones, polyethers, polyurethanes, polystyrene, PMMA, polysilazane, polyacrylamide, polyarylidenes, etc. Last few decades, many research works related to the synthesis and characterization of different types of hybrid polymers have been reported [2–15]. Two types of hybrid polymers are reported till now, the first type is organic to organic hybridizations while the second type is inorganic to organic hybridizations.…”

Section: Introductionmentioning

confidence: 99%

Thermally stable hybrid polyarylidene(azomethine-ether)s polymers (PAAP): an ultrasensitive arsenic(III) sensor approach

Rahman

Hussein

Aly

et al. 2018

Designed Monomers and Polymers

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A new category of thermally stable hybrid polyarylidene(azomethine-ether)s and copolyarylidene(azomethine-ether)s (PAAP) based on diarylidenecycloalkanones has been synthesized using solution polycondensation method. For potential cationic sensor development, a thin layer of PAAP onto a flat glassy carbon electrode (GCE, surface area: 0.0316 cm2) was prepared with conducting nafion (5%) coating agent to fabricate a sensitive and selective arsenic (III) [As3+] ion in short response time in neutral buffer system. The fabricated cationic sensor was measured the analytical performances such as higher sensitivity, linear dynamic range, detection limit, reproducibility, and long-term stability towards As3+ ions. The sensitivity and detection limit were calculated as 2.714 μAμM−1cm−2 and 6.8 ± 0.1 nM (SNR of 3; 3N/S) respectively from the calibration curve. This novel approach can be initiated a well-organized route of an efficient development of heavy selective arsenic sensor for hazardous pollutants in biological, environmental, and health care fields. Real sample analysis for various environmental sample was performed with PAAP-modified-GCE.

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A novel organic-inorganic PMMA/polysilazane hybrid polymer for corrosion protection

Cited by 55 publications

References 73 publications

Dispersion of upconverting nanostructures of CePO4 using rod and semi-spherical morphologies into transparent PMMA/PU IPNs by the sequential route

Dispersion of upconverting nanostructures of CePO4 using rod and semi-spherical morphologies into transparent PMMA/PU IPNs by the sequential route

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Thermally stable hybrid polyarylidene(azomethine-ether)s polymers (PAAP): an ultrasensitive arsenic(III) sensor approach

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