SEM‐EDX, water absorption, and wetting capability studies on evaluation of the influence of nano‐zinc oxide as additive to paraloid B72 solutions used for wooden artifacts consolidation

Trǎistaru, Ana‐Adriana Tuduce; Sandu, Irina Crina Anca; Timar, Maria Cristina; Dumitrescu, Georgeta Lucia; Sandu, Ion

doi:10.1002/jemt.22155

Cited by 21 publications

(7 citation statements)

References 23 publications

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“…SEM analysis gives information on the morphological feature of the samples, which allow us to investigate the grain distribution, density, and shape of the nanostructures (Tuduce Traistaru et al, ). To study the role of substrate on the morphology of the films, SEM analysis was carried out for the films prepared on different substrate.…”

Section: Resultsmentioning

confidence: 99%

The role of substrates on the structural, optical, and morphological properties of zno nanotubes prepared by spray pyrolysis

Vijayalakshmi¹,

Karthick²

2013

Microsc. Res. Tech.

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ZnO films were deposited onto glass, ITO coated glass, and sapphire substrate by spray pyrolysis, and subsequently annealed at the same temperature of 400°C for 3 h. The role of substrate on the properties of ZnO films was investigated. The structural and optical properties of the films were investigated by X-ray diffractometer (XRD) and photoluminescence (PL) spectrophotometer, respectively. The surface morphology of the nanostructured ZnO film was investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Crystallographic properties revealed that the ZnO films deposited on sapphire and ITO substrates exhibit a strong c-axis orientation of grains with hexagonal wurtzite structure. Extremely high UV emission intensity was determined in the film on ITO. The different luminescence behaviors was discussed, which would be caused by least value of strain in the film. Films grown on different substrates revealed differences in the morphology. ZnO films on ITO and sapphire substrates revealed better morphology than that of the film on glass. AFM images of the films prepared on ITO show uniform distribution of grains with large surface roughness, suitable for application in dye sensitized solar cells.

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Section: Resultsmentioning

confidence: 99%

The role of substrates on the structural, optical, and morphological properties of zno nanotubes prepared by spray pyrolysis

Vijayalakshmi¹,

Karthick²

2013

Microsc. Res. Tech.

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“…This factor was investigated by a gravimetric method, i.e., measuring the mass percentage increase (Equation (1) [31]), by treating wood samples with each composition and with each method of treatment application (brushing, spraying and immersion). The degree of impregnation of the wooden support was monitored according to the method of application of the treatment in order to evaluate the effectiveness of the treatment.…”

Section: Consolidant Retention (Cr)mentioning

confidence: 99%

Wood Surface Modification with Hybrid Materials Based on Multi-Walled Carbon Nanotubes

et al. 2022

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In this work, new treatments based on multi-walled carbon nanotubes (MWCNTs), MWCNTs decorated with zinc oxide (ZnO), MWCNTs decorated with hydroxyapatite (HAp) and MWCNTs decorated with silver (Ag) nanoparticles dispersed in PHBHV solution are proposed for improving sound oak wood properties. We hypothesize that the solutions containing decorated MWCNTs will be more efficient as wood consolidants, not only because of the improved mechanical properties of the treated wood but also because of the hydrophobic layer created on the wood surface. In order to test these hypotheses, the treatments’ potential was investigated by a number of complex methods, such as colorimetric parameter measurements, water absorption tests, mechanical tests, artificial aging and antifungal tests. The data confirm that the treated wood materials have moderate stability, and the color differences are not perceived with the naked eye. A significant improvement of the treated samples was observed by water absorption, humidity and mechanical tests compared to untreated wood. The best results were obtained for samples treated by brushing with solutions based on decorated CNTs, which confirms that a uniform and thicker layer is needed on the surface to ensure better protection. The wood behavior with accelerated aging revealed that the control sample degraded faster compared to the other treated samples. Antifungal tests showed that higher growth inhibition was obtained for samples treated with 0.2% MWCNTs_ZnO + PHBHV. Considering all of the obtained results, it can be concluded that the most effective treatment was MWCNTs_ZnO + PHBHV at a nanocomposite concentration of 0.2%, applied by brushing. Thus, wood protection against mold and fungi will be achieved, simultaneously ensuring improved mechanical strength and water barrier properties and therefore maintaining the structural integrity of sound oak wood over time.

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“…Wood is an organic material that is continuously subject to damage through various processes encountered in nature (heat, frost, the presence of various organisms, etc.). The most used wood in the manufacture of artifacts is poplar, lime and spruce [30,31]. In the case of the wood, several factors that affect its integrity have been identified: extreme temperatures, that lead to the loss of the structural strength of the wood [1]; biological attack (insects and fungi) which makes the wood becomes soft and fragile [32,33]; relative high humidity, that can cause severe alteration of the wood substrate [30].…”

Section: Types Of Consolidating Materials and Substratesmentioning

confidence: 99%

“…The most used wood in the manufacture of artifacts is poplar, lime and spruce [30,31]. In the case of the wood, several factors that affect its integrity have been identified: extreme temperatures, that lead to the loss of the structural strength of the wood [1]; biological attack (insects and fungi) which makes the wood becomes soft and fragile [32,33]; relative high humidity, that can cause severe alteration of the wood substrate [30]. Thus, the consolidation of fragile and degraded wood becomes a serious problem worldwide.…”

Section: Types Of Consolidating Materials and Substratesmentioning

confidence: 99%

Nanomaterials Used in Conservation and Restoration of Cultural Heritage: An Up-to-Date Overview

et al. 2020

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In the last few years, the preservation of cultural heritage has become an important issue globally, due to the fact that artifacts and monuments are continually threatened by degradation. It is thus very important to find adequate consolidators that are capable of saving and maintaining the natural aspect of these objects. This study aims to provide an updated survey of the main nanomaterials used for the conservation and restoration of cultural heritage. In the last few years, besides the classic nanomaterials used in this field, such as metal nanoparticles (copper and silver) and metal oxides (zinc and aluminum), hydroxyapatite and carbonated derivatives, tubular nanomaterials (such as carbon nanotubes) have been used as a potential consolidate material of cultural heritage. Tubular nanomaterials have attracted attention for use in different fields due to their structures, as well as their ability to present multiple walls. These nanotubes have the necessary properties in preserving cultural heritage, such as superior mechanical and elastic strength (even higher than steel), high hydrophobicity (with a contact angle up to 140°), optical properties (high photodegradation protection), large specific surface area (from 50 to 1315 m2/g, depending on the number of walls) for absorption of other nanomaterials and relatively good biocompatibility.

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SEM‐EDX, water absorption, and wetting capability studies on evaluation of the influence of nano‐zinc oxide as additive to paraloid B72 solutions used for wooden artifacts consolidation

Cited by 21 publications

References 23 publications

The role of substrates on the structural, optical, and morphological properties of zno nanotubes prepared by spray pyrolysis

The role of substrates on the structural, optical, and morphological properties of zno nanotubes prepared by spray pyrolysis

Wood Surface Modification with Hybrid Materials Based on Multi-Walled Carbon Nanotubes

Nanomaterials Used in Conservation and Restoration of Cultural Heritage: An Up-to-Date Overview

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