Mass Deacidification of Papers and Books III: Study of a Paper Strengthening and Deacidification Process with Amino Alkyl Alkoxy Silanes

Ipert, Stéphane; Rousset, Eliane; Cheradame, Hervé

doi:10.1515/rest.2005.250

Cited by 12 publications

(29 citation statements)

References 4 publications

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“…possibly through covalent bonds [2]. The protective efficiency does not seem to be solvent dependent.…”

Section: Biological Activity Of the Aaasmentioning

confidence: 89%

“…The treatment process has been extensively described elsewhere [2] and the main characteristics are recalled here. The items are impregnated for 10 min by immersion in a 10% (wt/wt) solution of AAAS in a silicone based solvent, at room temperature.…”

Section: Deacidification Treatment Solutions and Methodologymentioning

confidence: 99%

“…However, it can be noted that while folding endurance improved, the tensile resistance was unmodified. In the various experiments carried out, it was observed that the increase of tensile resistance, and tensile energy absorption (TEA), was to be attributed mainly to the nature of the AAAS [2], and to some extent also to the ageing state of the papers [3]. From the experiments reported here, and according to previous work carried out [2,3], it is clear that the deacidification treatment, besides alkaline buffer deposition, paper strengthening and a significant resistance to ageing, was also able to confer fungistatic properties to the treated papers.…”

Section: Effect Of Amdes Treatment On the Mechanical Properties Of Papermentioning

confidence: 99%

“…The need for a deacidification technique that would solve the acidity problem of aged items printed on paper by neutralisation and alkaline reserve deposition, as well as introduce physical strengthening is undeniable. For this reason a novel process based on impregnation with aminoalkylalkoxysilanes (AAAS) was recently developed [2,3]. This technique, in which aminoalkylalkoxysilanes dissolved in an appropriate solvent are deposited onto the cellulosic fibres where they can react and polycondensate, was shown to produce paper with enhanced mechanical resistance.…”

Section: Introduction and Research Aimsmentioning

confidence: 99%

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Mass deacidification of papers and books: V. Fungistatic properties of papers treated with aminoalkylalkoxysilanes

Rakotonirainy

Dupont

Lavédrine

et al. 2008

Journal of Cultural Heritage

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International audienceA new process using aminoalkylalkoxysilanes (AAAS) was developed recently for paper and book mass deacidification. This process is entirely novel in that, besides deacidifying, it also improves the mechanical properties of paper. In the present article, the properties of inhibition of fungal growth of the treated papers are investigated. It was found that the AAAS tested acted as surface-active antifungal agents when introduced in the paper, significantly reducing the growth of Aspergillus niger and Paecilomyces variotii, two fungal species commonly found in storage areas of libraries and archives. The AAAS which seemed the most efficient in preventing the fungal development was 3-aminopropylmethyldi-methoxysilane (AMDES), functionalised with a primary amine. The effect was significant in the different papers tested which demonstrated the protection against the proliferation of filamentous fungi in vitro for papers treated with AMDES. The higher concentration of AMDES inside the paper proved to be the most effective. The highest efficiency was reached for AAAS uptakes around 6%. At this concentration the sporulation of the two strains was inhibited and the development of A. niger mycelia was highly reduced

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“…possibly through covalent bonds [2]. The protective efficiency does not seem to be solvent dependent.…”

Section: Biological Activity Of the Aaasmentioning

confidence: 89%

Section: Deacidification Treatment Solutions and Methodologymentioning

confidence: 99%

Section: Effect Of Amdes Treatment On the Mechanical Properties Of Papermentioning

confidence: 99%

Section: Introduction and Research Aimsmentioning

confidence: 99%

See 2 more Smart Citations

Mass deacidification of papers and books: V. Fungistatic properties of papers treated with aminoalkylalkoxysilanes

Rakotonirainy

Dupont

Lavédrine

et al. 2008

Journal of Cultural Heritage

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“…In previous publications, a multifunctional solvent phase process based on various polysiloxanes with amine functionality (aminoalkylalkoxysilanes) was studied as an alternative for libraries and archives (Ipert et al 2005(Ipert et al , 2006Dupont et al 2010;Souguir et al 2011Souguir et al , 2012. Deacidification is ensured by the amine function and reinforcement is effected by in situ polymerization in the paper of the polysiloxane in ambient conditions.…”

Section: Introductionmentioning

confidence: 99%

Paper strengthening by polyaminoalkylalkoxysilane copolymer networks applied by spray or immersion: a model study

et al. 2013

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Two di-alkoxysilanes, with (AMDES, aminopropylmethyldiethoxysilane) or without (DMDES, dimethyldiethoxysilane) an amine function, and a trialkoxy aminosilane (APTES, aminopropyltriethoxysilane) as well as their mixtures were introduced in paper as fiber strengthening agents. The polymerization and copolymerization of these polysiloxanes in the paper were investigated. In all the cases where APTES was present, the formation of networks was established by measuring the soluble fraction amount extracted from the treated papers. A slight decrease of the opacity of the paper sheets when AMDES was part of the treatment was noted. The presence of APTES reduced this opacity loss. The study of the physicochemical properties of the treated paper (mechanical strength and alkalinity) demonstrated that, besides the required deacidification feature, the different treatments allowed an efficient strengthening of the cellulose fibers to various extents. Contact angle measurements indicated a decrease of the hydrophilic character of papers treated with the mixture APTES/AMDES and the occurrence of a hydrophobic character of the papers treated with APTES alone. These results were consistently obtained for both spray and immersion treatment processes.

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Condensation of alkoxysilanes in alcoholic media: I. Oligomerization of dimethyldiethoxysilane

Bennevault‐Celton¹,

Maciejak²,

Desmazières

et al. 2009

Polymer International

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In the context of the preservation of cultural heritage, the treatment of paper by an aminoalkylalkoxysilane, or its mixture with dimethyldiethoxysilane, has given encouraging results. Diluting the monomer bearing the amino function could contribute to obtaining a flexible network interpenetrating the fibre network. Due to the complexity of the system, the work presented here begins with a study of dimethyldiethoxysilane condensation under the conditions used for the paper deacidification (alcoholic medium, neutral condition, etc.). No detectable exchange reaction with ethanol was observed in anhydrous systems of dimethyldiethoxysilane for 24 h, but in the presence of water, hydrolysis and exchange were observed, the rate constant of the former being higher than that of the latter by one order of magnitude. In methanol, in the presence of water, condensation leading to dimerization was observed within less than three days, with polycondensation requiring a much longer time. From the rate constant measurements, in the presence of water, it appears that the condensation reaction is the slowest reaction. It can be concluded that with freshly prepared dimethyldiethoxysilane solutions in ethanol, this monomer cannot homopolymerize. The next step will be to determine to what extent it can be integrated into the network formed by the polycondensation of aminoalkylalkoxysilane.www.soci.org V Bennevault-Celton et al.material, i.e. inside paper. The next step of this research is to investigate the behaviour of mixtures of DMDES with an AAAS under the same conditions.

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Mass Deacidification of Papers and Books III: Study of a Paper Strengthening and Deacidification Process with Amino Alkyl Alkoxy Silanes

Cited by 12 publications

References 4 publications

Mass deacidification of papers and books: V. Fungistatic properties of papers treated with aminoalkylalkoxysilanes

Mass deacidification of papers and books: V. Fungistatic properties of papers treated with aminoalkylalkoxysilanes

Paper strengthening by polyaminoalkylalkoxysilane copolymer networks applied by spray or immersion: a model study

Condensation of alkoxysilanes in alcoholic media: I. Oligomerization of dimethyldiethoxysilane

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