TY - JOUR

T1 - Conservation process of archaeological waterlogged wood studied by spectroscopy and gradient NMR methods

AU - Kowalczuk, Joanna

AU - Rachocki, Adam

AU - Broda, Magdalena

AU - Mazela, Bartlomiej

AU - Ormondroyd, Graham

AU - Trite-Goc, Jadwiga

N1 - This work was supported by the Polish Ministry of Science and Higher Education as a part of the “Cultural heritage research into innovative solutions and methods for historic wood conservation” project within the National Program for the Development of Humanities in 2016–2019 (Project No. 2bH 15 0037 83).

PY - 2019/11

Y1 - 2019/11

N2 - The properties of methyltrimethoxysilane-treated, waterlogged archeological elm wood were studied by magnetic resonance imaging and nuclear magnetic resonance (NMR) methods. The spatially resolved proton density images, spin–spin relaxa- tion profiles, proton NMR spectra, and self-diffusion coefficients of the preserva- tive agents were measured during drying. The resolution of the data allowed for the differentiation between the early and late wood areas of the elm wood and deter- mination of the shrinkage of the sample in the tangential and radial directions, and it showed the different dynamics of methyltrimethoxysilane (MTMS) in the lumen cells of both early and late woods. The NMR spectra indicated that the MTMS, after rapid evaporation of ethanol, is bound to the wood. Identical measurements were also taken for the archeological elm wood treated with polyethylene glycol (PEG) and for an untreated wood sample. From the results, it can be concluded that MTMS showed significantly higher stability against shrinkage when compared to PEG. Therefore, it may be considered as an alternative preservative for archeologi- cal wood.

AB - The properties of methyltrimethoxysilane-treated, waterlogged archeological elm wood were studied by magnetic resonance imaging and nuclear magnetic resonance (NMR) methods. The spatially resolved proton density images, spin–spin relaxa- tion profiles, proton NMR spectra, and self-diffusion coefficients of the preserva- tive agents were measured during drying. The resolution of the data allowed for the differentiation between the early and late wood areas of the elm wood and deter- mination of the shrinkage of the sample in the tangential and radial directions, and it showed the different dynamics of methyltrimethoxysilane (MTMS) in the lumen cells of both early and late woods. The NMR spectra indicated that the MTMS, after rapid evaporation of ethanol, is bound to the wood. Identical measurements were also taken for the archeological elm wood treated with polyethylene glycol (PEG) and for an untreated wood sample. From the results, it can be concluded that MTMS showed significantly higher stability against shrinkage when compared to PEG. Therefore, it may be considered as an alternative preservative for archeologi- cal wood.

U2 - 10.1007/s00226-019-01129-5

DO - 10.1007/s00226-019-01129-5

M3 - Article

VL - 53

SP - 1207

EP - 1222

JO - Wood Science and Technology

JF - Wood Science and Technology

SN - 0043-7719

IS - 6

ER -