Identification of free radicals trapped in solid methacrylated resins

Delphine Truffier-Boutry; Xavier A. Gallez; Sophie Demoustier-Champagne; Jacques Devaux; Michèle Mestdagh; Benoît Champagne; Gaëtane Leloup

doi:10.1002/pola.10692

Identification of free radicals trapped in solid methacrylated resins

Delphine Truffier-Boutry, Xavier A. Gallez, Sophie Demoustier-Champagne, Jacques Devaux, Michèle Mestdagh, Benoît Champagne, Gaëtane Leloup

Research output: Contribution to journal › Article › peer-review

Abstract

Photopolymerization of methacrylated dental resins at room temperature leads to the appearance of long-life free radicals because of system vitrification. These free radicals were observed by electronic paramagnetic resonance (EPR), and their characterization was undertaken by reference to the reactional mechanism, from the comparison with the model EPR signal and from theoretical simulation. Overlapping of two EPR signals assigned to two different kinds of radicals because of methacrylate end groups accounted for all the experimental and theoretical results.

Original language	English
Pages (from-to)	1691-1699
Number of pages	9
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	41
Issue number	11
DOIs	https://doi.org/10.1002/pola.10692
Publication status	Published - 1 Jun 2003

Keywords

Dental resins
EPR
Free radicals
Gel effect
Methacrylated resins
Photopolymerization
Reactional mechanism
Simulations
Solid state
Trapping
Vitrification

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10.1002/pola.10692

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title = "Identification of free radicals trapped in solid methacrylated resins",

abstract = "Photopolymerization of methacrylated dental resins at room temperature leads to the appearance of long-life free radicals because of system vitrification. These free radicals were observed by electronic paramagnetic resonance (EPR), and their characterization was undertaken by reference to the reactional mechanism, from the comparison with the model EPR signal and from theoretical simulation. Overlapping of two EPR signals assigned to two different kinds of radicals because of methacrylate end groups accounted for all the experimental and theoretical results.",

keywords = "Dental resins, EPR, Free radicals, Gel effect, Methacrylated resins, Photopolymerization, Reactional mechanism, Simulations, Solid state, Trapping, Vitrification",

author = "Delphine Truffier-Boutry and Gallez, {Xavier A.} and Sophie Demoustier-Champagne and Jacques Devaux and Mich{\`e}le Mestdagh and Beno{\^i}t Champagne and Ga{\"e}tane Leloup",

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T1 - Identification of free radicals trapped in solid methacrylated resins

AU - Truffier-Boutry, Delphine

AU - Gallez, Xavier A.

AU - Demoustier-Champagne, Sophie

AU - Devaux, Jacques

AU - Mestdagh, Michèle

AU - Champagne, Benoît

AU - Leloup, Gaëtane

PY - 2003/6/1

Y1 - 2003/6/1

N2 - Photopolymerization of methacrylated dental resins at room temperature leads to the appearance of long-life free radicals because of system vitrification. These free radicals were observed by electronic paramagnetic resonance (EPR), and their characterization was undertaken by reference to the reactional mechanism, from the comparison with the model EPR signal and from theoretical simulation. Overlapping of two EPR signals assigned to two different kinds of radicals because of methacrylate end groups accounted for all the experimental and theoretical results.

AB - Photopolymerization of methacrylated dental resins at room temperature leads to the appearance of long-life free radicals because of system vitrification. These free radicals were observed by electronic paramagnetic resonance (EPR), and their characterization was undertaken by reference to the reactional mechanism, from the comparison with the model EPR signal and from theoretical simulation. Overlapping of two EPR signals assigned to two different kinds of radicals because of methacrylate end groups accounted for all the experimental and theoretical results.

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KW - EPR

KW - Free radicals

KW - Gel effect

KW - Methacrylated resins

KW - Photopolymerization

KW - Reactional mechanism

KW - Simulations

KW - Solid state

KW - Trapping

KW - Vitrification

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JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 11

ER -

Identification of free radicals trapped in solid methacrylated resins

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