用模拟桦木保护考古木材的硅烷:抗真菌,物理化学和TGA研究。

IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Akbar Mastouri, Davood Efhamisisi, Asghar Tarmian, Carola Esposito Corcione, Alireza Gholinejad Pirbazari
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引用次数: 0

摘要

保护古代木制文物,除了巩固优势外,防止其随着时间的推移而变质。本研究将甲基三甲氧基硅烷(MTMS)和含25%乙醇的3-巯基丙基三甲氧基硅烷(MPTMS)作为陆生环境中考古木材的保护策略,在受控条件下应用于模拟桦木(Betula pendula)上。当木材样品逐渐饱和和干燥时,美学和细胞壁的完整性也被考虑在内。通过对木材试件在4个老化阶段的浸出特性、视觉和物理变化进行评价,评价其性能和稳定性。利用FE-SEM显微镜和ATR-FTIR光谱分析其形态和化学反应。为了比较,还对样品进行了抗真菌性能和热重分析(TGA, DTG)。结果表明,硅烷化减少了木材与水的相互作用,同时保持了木材的美学特性,尤其是与MPTMS的相互作用。硅烷处理木材的最大拒水性是在水后处理后达到的,这可能表明硅烷在水存在下的二次水解及其再聚合。桦木(不耐用)的生物耐久性测试(根据EN 113-2),对担子菌真菌(即,木犀草和Gloeophyllum trabeum)分别显示,MPTMS和mtms处理木材的效率分别为~ 90%(非常耐用)和~ 65%(中等耐用)。通过FTIR和TGA分析,发现MPTMS与木质素的相互作用较多,这更符合大多数考古木材的化学性质。TGA/DTG也证实了硅烷增强木材的热稳定性和低吸湿性,表明硅烷对历史木材具有很高的保护潜力。同时,建议对真实古样品进行补充研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Silanes for conservation of archaeological woods using modeled birch wood: antifungal, physical-chemical and TGA studies.

Conservation of ancient wooden artifacts, in addition to consolidation advantage, prevent its deterioration over time. In this research, silane consolidants, including methyltrimethoxysilane (MTMS) and 3-mercaptopropyltrimethoxysilane (MPTMS) with 25 wt% in ethanol were applied under controlled conditions on modeled birch wood (Betula pendula) as a conservation strategy for archeological woods in terrestrial environments. While the wood samples were gradually saturated and dried, aesthetics and cell-walls integrity were also considered. The leaching characteristics, visual and physical changes of wood specimens were evaluated during 4 aging periods to assess their performance and stability. Morphological and chemical reactions were analyzed by FE-SEM microscopy and ATR-FTIR spectroscopy, respectively. For comparison, antifungal properties and thermogravimetric analysis (TGA, DTG) were also examined on the samples. As results, silanization reduced the wood-water interactions while maintaining the aesthetic properties, especially with MPTMS. Maximum water-repellency of silane-treated woods were achieved after a water post-treatment, which probably indicates the secondary hydrolysis of silanes in the presence of water and their re-polymerization. Biological-durability testing (according to EN 113-2) of birch wood (not-durable), against Basidiomycete fungi (i.e., Trametes versicolor and Gloeophyllum trabeum) showed ~ 90% (very-durable) and ~ 65% (moderately-durable) efficiency for MPTMS- and MTMS-treated wood respectively. Based on FTIR and TGA analysis, more interactions of MPTMS with lignin was found, which is more consistent with the chemical nature of most archaeological woods. Thermal-stability and low hygroscopicity of silane-reinforced woods were also confirmed by TGA/DTG, indicating high conservation potential of silanes for historical woods. Meanwhile, a complementary study on real ancient samples is recommended.

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来源期刊
Scientific Reports
Scientific Reports Natural Science Disciplines-
CiteScore
7.50
自引率
4.30%
发文量
19567
审稿时长
3.9 months
期刊介绍: We publish original research from all areas of the natural sciences, psychology, medicine and engineering. You can learn more about what we publish by browsing our specific scientific subject areas below or explore Scientific Reports by browsing all articles and collections. Scientific Reports has a 2-year impact factor: 4.380 (2021), and is the 6th most-cited journal in the world, with more than 540,000 citations in 2020 (Clarivate Analytics, 2021). •Engineering Engineering covers all aspects of engineering, technology, and applied science. It plays a crucial role in the development of technologies to address some of the world''s biggest challenges, helping to save lives and improve the way we live. •Physical sciences Physical sciences are those academic disciplines that aim to uncover the underlying laws of nature — often written in the language of mathematics. It is a collective term for areas of study including astronomy, chemistry, materials science and physics. •Earth and environmental sciences Earth and environmental sciences cover all aspects of Earth and planetary science and broadly encompass solid Earth processes, surface and atmospheric dynamics, Earth system history, climate and climate change, marine and freshwater systems, and ecology. It also considers the interactions between humans and these systems. •Biological sciences Biological sciences encompass all the divisions of natural sciences examining various aspects of vital processes. The concept includes anatomy, physiology, cell biology, biochemistry and biophysics, and covers all organisms from microorganisms, animals to plants. •Health sciences The health sciences study health, disease and healthcare. This field of study aims to develop knowledge, interventions and technology for use in healthcare to improve the treatment of patients.
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