Surface investigations of old book paper treated with hydroxyapatite nanoparticles

Ion, Rodica‐Mariana; Doncea, Sanda Maria; Ion, Mihaela-Lucia; Rădiţoiu, Valentin; Amăriuţei, Viorica

doi:10.1016/j.apsusc.2013.07.159

Cited by 24 publications

(23 citation statements)

References 4 publications

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“…Figure 14 shows two of the main chromatic parameters for all tested samples. The values obtained reveal that in this case ∆b* is less 5 and DE* is less than 2 only in the case of AuHAp, as real proofs for the stability results of old wood [12].…”

Section: Auhap Preparation and Characterizationsupporting

confidence: 52%

“…During the last decades, the nanomaterials and nanotechnologies came into force in this area of cultural heritage, new and efficient systems being created and tested on different artifacts and works of art: metallic oxides and hydroxides (ZnO, TiO 2 , Ca(OH) 2 , Mg(OH) 2 , Ba(OH) 2 , Sr(OH) 2 ) [10], metallic nanoparticles (Au, Ag, Pt) [11], and very recently, hydroxyapatite (HAp) (Ca 10 (PO 4 ) 6 (OH) 2 : Ca/P = 1.67) [12].…”

Section: Introductionmentioning

confidence: 99%

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Wood preservation with gold hydroxyapatite system

et al. 2018

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Over centuries, the external factors such as fire, low temperature, light or microbiological agents, act on the wood and induce some degradation processes, sometimes irreversible, identified by discoloration, fragility and unsightly appearance. Although there are numerous literature reports about different nanomaterials used for preservation and restoration of wood surfaces (calcium hydroxides, magnesium hydroxides, hydroxyapatite, or even organic resins as Paraloid B72), in this paper it is proposed a new system-gold hydroxyapatite (AuHAp), tested on the hazelnut wood samples (young and aged specimens), as a new solution for preservation of some wooden artifacts. This paper addresses a broad range of analytical methods: X-ray diffraction, UV-Vis spectrophotometry, Fourier transformed infrared spectroscopy, Raman spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, chromatic parameters and hardness test. Also, humidity sorption/desorption measurements are used for humidity sorption and desorption evaluation. The adsorption and desorption tests determined the hydroscopic sorption properties of the wood specimens by measuring the mass of the specimens in equilibrium with air at a specific temperature and RH. All the results concluded that after the application of the new system on the hazelnut wood surface, a well distributed and uniform layer consisting from AuHAp systems with a network aspect are observed, which covers the wood vessels and fibers, filling the voids and stopping the wood weathering process, more accentuated at aged wood than at the young species.

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Section: Auhap Preparation and Characterizationsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Wood preservation with gold hydroxyapatite system

et al. 2018

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“…The possible use of already-formed HAP nanoparticles for the conservation of ancient paper has been investigated in Reference [ 16 ]. Paper is mainly composed of cellulose fibres forming a three-dimensional structure and it may also contain hemicellulose, lignin and additives (e.g., binding materials, inorganic fillers, dyes, pigments, metal ions).…”

Section: Other Substratesmentioning

confidence: 99%

“…The use of hydroxyapatite (HAP) and calcium phosphates (CaP) was initially proposed in 2011 for the conservation of carbonate stones (i.e., marble and limestone) [ 1 , 2 , 3 , 4 ] and later explored for the conservation of additional substrates, including sandstone [ 5 , 6 ], sulphated stones [ 7 , 8 , 9 , 10 ], gypsum stuccoes [ 10 , 11 ], concrete [ 12 ], wall paintings [ 13 ], archaeological bones [ 14 , 15 ] and paper [ 16 ]. With the exception of a few cases where already-formed HAP nanoparticles were used [ 16 ], in all the other cases HAP was formed in situ from the reaction between the substrate and an aqueous phosphate solution, as schematically illustrated in Figure 1 .…”

Section: Introductionmentioning

confidence: 99%

Hydroxyapatite and Other Calcium Phosphates for the Conservation of Cultural Heritage: A Review

Sassoni

2018

Materials

106

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The present paper reviews the methods and the performance of in situ formation of calcium phosphates (CaP) for the conservation of materials belonging to cultural heritage. The core idea is to form CaP (ideally hydroxyapatite, HAP, the most stable CaP at pH > 4) by reaction between the substrate and an aqueous solution of a phosphate salt. Initially proposed for the conservation of marble and limestone, the treatment has been explored for a variety of different substrates, including sandstones, sulphated stones, gypsum stuccoes, concrete, wall paintings, archaeological bones and paper. First, the studies aimed at identifying the best treatment conditions (e.g., nature and concentration of the phosphate precursor, solution pH, treatment duration, ionic and organic additions to the phosphate solution, mineralogical composition of the new CaP phases) are summarized. Then, the treatment performance on marble and limestone is reviewed, in terms of protective and consolidating effectiveness, compatibility (aesthetic, microstructural and physical) and durability. Some pilot applications in real case studies are also reported. Recent research aimed at extending the phosphate treatment to other substrates is then illustrated. Finally, the strengths of the phosphate treatment are summarized, in comparison with alternative products, and some aspects needing future research are outlined.

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“…After a long period of exposure to environmental conditions (e.g., temperature, humidity, light), these substances accelerate chemical degradation of the paper. The global effect is the rapid decrease in the resistance to degradation of paper documents, especially on paper made since the eighteenth century [41][42][43]. There is a general consensus on the inevitable treatment of deacidification in paper preservation.…”

Section: Considerations On the Methods Of Conserving The Historical Pmentioning

confidence: 99%

Nanotechnologies in Cultural Heritage - Materials and Instruments for Diagnosis and Treatment

Ion¹,

Doncea²,

Carutiu³

2018

Novel Nanomaterials - Synthesis and Applications

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This chapter aims to evaluate the nanomaterials that can be used to diagnostic, conservation and restoration of different artifacts and monuments and that can contribute to solving the problems which could appear during weathering processes of them. The nanotechnology, as a new and revolutionary area in science, can improve the traditional methods currently used for restoration and preservation in cultural heritage and can contribute to the creation of new highly specialized methods for diagnostic and treatment of different artifacts or even monuments. With a smaller size, a higher penetrability, viscosity, thermal and magnetic properties, in comparison with the traditional materials, the nanomaterials can contribute to solve the problems deriving from specific phenomena that could appear during the intervention and to identify the potential newly formed products in the treated materials. In this chapter, some aspects about the nanomaterials used for conservation and restoration of stone and paper artifacts are evidenced and discussed.

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Surface investigations of old book paper treated with hydroxyapatite nanoparticles

Cited by 24 publications

References 4 publications

Wood preservation with gold hydroxyapatite system

Wood preservation with gold hydroxyapatite system

Hydroxyapatite and Other Calcium Phosphates for the Conservation of Cultural Heritage: A Review

Nanotechnologies in Cultural Heritage - Materials and Instruments for Diagnosis and Treatment

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