Grafting of bifunctional phosphonic and carboxylic acids on Phynox: Impact of induction heating

Devillers, Sébastien; Lanners, L.; Delhalle, Joseph; Mekhalif, Zineb

doi:10.1016/j.apsusc.2011.02.020

Cited by 14 publications

(27 citation statements)

References 64 publications

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“…In the 2820–2980 cm –1 region of the spectra, very weak C–H asymmetric and symmetric stretching vibrations bands are observed around 2920 and 2854 cm –1 , which correspond to CH 2 vibrations, and around 2966 and 2877 cm –1 for the CH 3 vibrations. These infrared values are indicative of weakly organized monolayers . Nevertheless, these alkanethiol grafted surfaces characterized here remain stable during the boiling experiments as can be seen by comparing the curves in Figure before (B), during (C), and after (D) boiling.…”

Section: Resultsmentioning

confidence: 62%

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Influence of the Wettability on the Boiling Onset

et al. 2012

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Experimental investigation of pool boiling is conducted in stationary conditions over very smooth bronze surfaces covered by a very thin layer of gold presenting various surface treatments to isolate the role of wettability. We show that even with surfaces presenting mean roughness amplitudes below 10 nm the role of surface topography is of importance. The study shows also that wettability alone can trigger the boiling and that the boiling position on the surface can be controlled by chemical grafting using for instance alkanethiol. Moreover, boiling curves, that is, heat flux versus the surface superheat (which is the difference between the solid surface temperature and the liquid saturation temperature), are recorded and enabled to quantify, for this case, the significant reduction of the superheat at the onset of incipient boiling due to wettability.

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Section: Resultsmentioning

confidence: 62%

“…These infrared values are indicative of weakly organized monolayers. 41 Nevertheless, these alkanethiol grafted surfaces characterized here remain stable during the boiling experiments as can be seen by comparing the curves in Figure 3 before (B), during (C), and after (D) boiling.…”

Section: ■ Experimental Proceduresmentioning

confidence: 75%

Influence of the Wettability on the Boiling Onset

et al. 2012

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“…First, thermal activation using both conventional heating (CH) and magnetic induction heating (MIH) was investigated by our team. 41,60,61 The MIH in particular has emerged as a powerful activator process in surface chemistry, as recently reported in the literature. 26,60,62 MIH is a technique based on physical phenomena (Faraday−Lenz law, eddy currents, and Joule effect) commonly used to heat electrically conductive materials thanks to a time-varying magnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…41,60,61 The MIH in particular has emerged as a powerful activator process in surface chemistry, as recently reported in the literature. 26,60,62 MIH is a technique based on physical phenomena (Faraday−Lenz law, eddy currents, and Joule effect) commonly used to heat electrically conductive materials thanks to a time-varying magnetic field. A significant advantage of this technique relies on the possibility of locally heating a material without any contact.…”

Section: Introductionmentioning

confidence: 99%

“…In this respect and considering the long modification times usually required to obtain densely formed monolayers, strategies to activate the SAMs preparation were developed to shorten the preparation time and maintain the quality of the SAM. First, thermal activation using both conventional heating (CH) and magnetic induction heating (MIH) was investigated by our team. ,, The MIH in particular has emerged as a powerful activator process in surface chemistry, as recently reported in the literature. ,, MIH is a technique based on physical phenomena (Faraday–Lenz law, eddy currents, and Joule effect) commonly used to heat electrically conductive materials thanks to a time-varying magnetic field. A significant advantage of this technique relies on the possibility of locally heating a material without any contact.…”

Section: Introductionmentioning

confidence: 99%

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Electroassisted Functionalization of Nitinol Surface, a Powerful Strategy for Polymer Coating through Controlled Radical Surface Initiation

et al. 2017

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Coating Nitinol (NiTi) surfaces with a polymer layer has become very appealing in the past few years owing to its increased attraction in the biomedical field. Although its intrinsic properties helped ensure its popularity, its extensive implementation is still hampered by its nickel inclusion, making it sensitive to pitting corrosion and therefore leading to the release of carcinogenic Ni ions. Among all recent ways to modify NiTi surfaces, elaboration of self-assembled monolayers is of great interest as their high order confers a reinforcement of the metal surface corrosion resistance and brings new functionalities to the metal for postmodification processes. In this work, we compare the electroassisted and thermally assisted self-assembling of 11-(2-bromoisobutyrate)-undecyl-1-phosphonic acid (BUPA) to the classical immersion process on NiTi surfaces initially submitted to a hydrothermal treatment. Among all tested conditions, the electroassisted grafting of BUPA at room temperature appears to be the most promising alternative, as it allows grafting in very short times (5-10 min), thus preventing its degradation. The thus-formed layer has been proven to be sufficient to enable the surface-initiated atom transfer radical polymerization (SI-ATRP) of 2-(dimethylamino)ethyl methacrylate.

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