Chitosan and alginate layer-by-layer assembly on phynox (Co-Cr Alloy) surface modified by alkylcarboxylicammoniumphosphonate derivatives

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Abstract

Phynox is an austenitic cobalt-chromium alloy that presents a great variety of properties (such as good fatigue strength, resistance to corrosion and high passivity in contact with human tissues) that makes Phynox interesting where high mechanical performances are required for applications (such as springs in watch motors, aeronautical equipments, . . . ) and for biomedical applications. This work aims to study the deposition of polyelectrolyte multilayer (i.e. chitosan and alginate) on modified Phynox substrates and more specifically to compare different pathways for the deposition of the first chitosan layer. After the synthesis and the grafting of 11- methylundecanoateammoniumphosphonate (or NPCOOMe), the first chitosan layer has been deposited either by ionic interactions or by a covalent grafting via an amidation reaction (under conventional and induction heating) with the monolayer present on the modified Phynox substrate. The amidation reaction under induction heating leads to the grafting of a higher amount of chitosan. Finally, the feasibility of successive polyelectrolyte multilayer deposition has been demonstrated.

Original languageEnglish
Pages (from-to)H820-H828
Number of pages9
JournalJournal of Electrochemical Society
Volume160
Issue number11
DOIs
Publication statusPublished - 2 Oct 2013

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Alginate
Chitosan
induction heating
assembly
Derivatives
Induction heating
Polyelectrolytes
chromium alloys
cobalt alloys
Multilayers
Chromium Alloys
Cobalt alloys
Chromium alloys
clocks
passivity
corrosion
Substrates
Monolayers
heating
synthesis

Cite this

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title = "Chitosan and alginate layer-by-layer assembly on phynox (Co-Cr Alloy) surface modified by alkylcarboxylicammoniumphosphonate derivatives",
abstract = "Phynox is an austenitic cobalt-chromium alloy that presents a great variety of properties (such as good fatigue strength, resistance to corrosion and high passivity in contact with human tissues) that makes Phynox interesting where high mechanical performances are required for applications (such as springs in watch motors, aeronautical equipments, . . . ) and for biomedical applications. This work aims to study the deposition of polyelectrolyte multilayer (i.e. chitosan and alginate) on modified Phynox substrates and more specifically to compare different pathways for the deposition of the first chitosan layer. After the synthesis and the grafting of 11- methylundecanoateammoniumphosphonate (or NPCOOMe), the first chitosan layer has been deposited either by ionic interactions or by a covalent grafting via an amidation reaction (under conventional and induction heating) with the monolayer present on the modified Phynox substrate. The amidation reaction under induction heating leads to the grafting of a higher amount of chitosan. Finally, the feasibility of successive polyelectrolyte multilayer deposition has been demonstrated.",
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T1 - Chitosan and alginate layer-by-layer assembly on phynox (Co-Cr Alloy) surface modified by alkylcarboxylicammoniumphosphonate derivatives

AU - Barthélémy, B.

AU - Devillers, Sébastien

AU - Fonder, Grégory

AU - Delhalle, Joseph

AU - Mekhalif, Z.

PY - 2013/10/2

Y1 - 2013/10/2

N2 - Phynox is an austenitic cobalt-chromium alloy that presents a great variety of properties (such as good fatigue strength, resistance to corrosion and high passivity in contact with human tissues) that makes Phynox interesting where high mechanical performances are required for applications (such as springs in watch motors, aeronautical equipments, . . . ) and for biomedical applications. This work aims to study the deposition of polyelectrolyte multilayer (i.e. chitosan and alginate) on modified Phynox substrates and more specifically to compare different pathways for the deposition of the first chitosan layer. After the synthesis and the grafting of 11- methylundecanoateammoniumphosphonate (or NPCOOMe), the first chitosan layer has been deposited either by ionic interactions or by a covalent grafting via an amidation reaction (under conventional and induction heating) with the monolayer present on the modified Phynox substrate. The amidation reaction under induction heating leads to the grafting of a higher amount of chitosan. Finally, the feasibility of successive polyelectrolyte multilayer deposition has been demonstrated.

AB - Phynox is an austenitic cobalt-chromium alloy that presents a great variety of properties (such as good fatigue strength, resistance to corrosion and high passivity in contact with human tissues) that makes Phynox interesting where high mechanical performances are required for applications (such as springs in watch motors, aeronautical equipments, . . . ) and for biomedical applications. This work aims to study the deposition of polyelectrolyte multilayer (i.e. chitosan and alginate) on modified Phynox substrates and more specifically to compare different pathways for the deposition of the first chitosan layer. After the synthesis and the grafting of 11- methylundecanoateammoniumphosphonate (or NPCOOMe), the first chitosan layer has been deposited either by ionic interactions or by a covalent grafting via an amidation reaction (under conventional and induction heating) with the monolayer present on the modified Phynox substrate. The amidation reaction under induction heating leads to the grafting of a higher amount of chitosan. Finally, the feasibility of successive polyelectrolyte multilayer deposition has been demonstrated.

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