Vegetable oil reactions within wood studied by direct 13C excitation with 1H decoupling and magic-angle sample spinning (MAS) NMR

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Vegetable oil reactions within wood studied by direct ¹³C excitation with ¹H decoupling and magic-angle sample spinning (MAS) NMR. / Pagès, Guilhem; Alireza, Salehi M.; Dvinskikh, Sergey V.; Johansson, Mats K.G.; Furó, István.

In: Progress in Organic Coatings, Vol. 75, No. 3, 01.11.2012, p. 259-263.

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

Author

Pagès, Guilhem ; Alireza, Salehi M. ; Dvinskikh, Sergey V. ; Johansson, Mats K.G. ; Furó, István. / Vegetable oil reactions within wood studied by direct ¹³C excitation with ¹H decoupling and magic-angle sample spinning (MAS) NMR. In: Progress in Organic Coatings. 2012 ; Vol. 75, No. 3. pp. 259-263.

BibTeX

@article{dabb817de38543e8b9ba45ecc167e3fa,

title = "Vegetable oil reactions within wood studied by direct 13C excitation with 1H decoupling and magic-angle sample spinning (MAS) NMR",

abstract = "Despite having been used for ages to protect wood against the influence of outdoor elements, the chemistry of vegetable oils within wood is poorly known. We propose a method based on solid-state magic-angle sample spinning NMR to in situ characterize oil oxidation as well as its immobilization. To eliminate signal coming from wood molecules but to keep signal from the oil, direct 13C excitation is performed with low-power 1H decoupling during signal acquisition. To suppress the effect of anisotropic spin-interactions and magnetic field inhomogeneity, the sample is spun at the magic-angle. Mono- and polyunsaturated fatty acid derivatives show a difference in their oxidation process: the monounsaturated methyl oleate reacts with wood components and becomes immobilized while the polyunsaturated methyl linoleate becomes oxidized and form oligomers but does not seem to bind to wood. Linola {\textregistered} oil behaves as would be expected on the basis of its composition by monounsaturated and polyunsaturated chains. This method can be generalized to all coating treatments to characterize chemical pathways and reactions. A better understanding of coating effects on wood is a crucial step to design more efficient protective mixtures.",

keywords = "C single-pulse excitation magic-angle spinning, Methyl linoleate, Methyl oleate, Oil immobilization, Oil oxidation, SPMAS",

author = "Guilhem Pag{\`e}s and Alireza, {Salehi M.} and Dvinskikh, {Sergey V.} and Johansson, {Mats K.G.} and Istv{\'a}n Fur{\'o}",

year = "2012",

month = nov,

day = "1",

doi = "10.1016/j.porgcoat.2012.05.007",

language = "English",

volume = "75",

pages = "259--263",

journal = "Progress in Organic Coatings",

issn = "0033-0655",

publisher = "Elsevier",

number = "3",

}

RIS

TY - JOUR

T1 - Vegetable oil reactions within wood studied by direct 13C excitation with 1H decoupling and magic-angle sample spinning (MAS) NMR

AU - Pagès, Guilhem

AU - Alireza, Salehi M.

AU - Dvinskikh, Sergey V.

AU - Johansson, Mats K.G.

AU - Furó, István

PY - 2012/11/1

Y1 - 2012/11/1

N2 - Despite having been used for ages to protect wood against the influence of outdoor elements, the chemistry of vegetable oils within wood is poorly known. We propose a method based on solid-state magic-angle sample spinning NMR to in situ characterize oil oxidation as well as its immobilization. To eliminate signal coming from wood molecules but to keep signal from the oil, direct 13C excitation is performed with low-power 1H decoupling during signal acquisition. To suppress the effect of anisotropic spin-interactions and magnetic field inhomogeneity, the sample is spun at the magic-angle. Mono- and polyunsaturated fatty acid derivatives show a difference in their oxidation process: the monounsaturated methyl oleate reacts with wood components and becomes immobilized while the polyunsaturated methyl linoleate becomes oxidized and form oligomers but does not seem to bind to wood. Linola ® oil behaves as would be expected on the basis of its composition by monounsaturated and polyunsaturated chains. This method can be generalized to all coating treatments to characterize chemical pathways and reactions. A better understanding of coating effects on wood is a crucial step to design more efficient protective mixtures.

AB - Despite having been used for ages to protect wood against the influence of outdoor elements, the chemistry of vegetable oils within wood is poorly known. We propose a method based on solid-state magic-angle sample spinning NMR to in situ characterize oil oxidation as well as its immobilization. To eliminate signal coming from wood molecules but to keep signal from the oil, direct 13C excitation is performed with low-power 1H decoupling during signal acquisition. To suppress the effect of anisotropic spin-interactions and magnetic field inhomogeneity, the sample is spun at the magic-angle. Mono- and polyunsaturated fatty acid derivatives show a difference in their oxidation process: the monounsaturated methyl oleate reacts with wood components and becomes immobilized while the polyunsaturated methyl linoleate becomes oxidized and form oligomers but does not seem to bind to wood. Linola ® oil behaves as would be expected on the basis of its composition by monounsaturated and polyunsaturated chains. This method can be generalized to all coating treatments to characterize chemical pathways and reactions. A better understanding of coating effects on wood is a crucial step to design more efficient protective mixtures.

KW - C single-pulse excitation magic-angle spinning

KW - Methyl linoleate

KW - Methyl oleate

KW - Oil immobilization

KW - Oil oxidation

KW - SPMAS

UR - http://www.scopus.com/inward/record.url?scp=84863728033&partnerID=8YFLogxK

U2 - 10.1016/j.porgcoat.2012.05.007

DO - 10.1016/j.porgcoat.2012.05.007

M3 - Article

AN - SCOPUS:84863728033

VL - 75

SP - 259

EP - 263

JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

SN - 0033-0655

IS - 3

ER -

ID: 48944435