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Comparison of Trimethylsilyl Cellulose-Stabilized Carbonate and Hydroxide Nanoparticles for Deacidification and Strengthening of Cellulose-Based Cultural Heritage

التفاصيل البيبلوغرافية
العنوان: Comparison of Trimethylsilyl Cellulose-Stabilized Carbonate and Hydroxide Nanoparticles for Deacidification and Strengthening of Cellulose-Based Cultural Heritage
المؤلفون: Karin Stana Kleinschek, Alenka Vesel, Rupert Kargl, Silvo Hribernik, Tamilselvan Mohan, Jasna Malešič, Matej Bračič, Lunjakorn Amornkitbamrung, Doris Bračič, Ulrich Hirn
المصدر: ACS Omega
ACS Omega, Vol 5, Iss 45, Pp 29243-29256 (2020)
سنة النشر: 2020
مصطلحات موضوعية: chemistry.chemical_classification, Hexamethyldisiloxane, Materials science, General Chemical Engineering, General Chemistry, Polymer, Accelerated aging, Folding endurance, Article, Contact angle, Chemistry, chemistry.chemical_compound, chemistry, Chemical engineering, Ultimate tensile strength, Hydroxide, Cellulose, QD1-999
الوصف: Herein, colloidal dispersions of alkaline nanoparticles (NPs: CaCO3 and Mg(OH)2) are stabilized by trimethylsilyl cellulose (TMSC) in hexamethyldisiloxane and employed to treat historical wood pulp paper by an effortless dip-coating technique. Both alkaline NPs exhibit high stability and no size and shape changes upon stabilization with the polymer, as shown by UV-vis spectroscopy and transmission electron microscopy. The long-term effect of NP/TMSC coatings is investigated in detail using accelerated aging. The results from the pH-test and back-titration of coated papers show a complete acid neutralization (pH ∼ 7.4) and introduction of adequate alkaline reserve even after prolonged accelerated aging. Scanning electron microscopy-energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and infrared and water contact angle measurements showed the introduction of a thin and smooth hydrophobic NP/TMSC coating on the paper fibers. Acid-catalyzed desilylation of TMSC was observed by declining C-Si infrared absorbance peaks upon aging. The CaCO3 coatings are superior to Mg(OH)2 with respect to a reduced yellowing and lower cellulose degradation upon aging as shown by colorimetric measurements and degree of polymerization analysis. The tensile strength and folding endurance of coated and aged papers are improved to 200-300 and 50-70% as illustrated by tensile strength and double folding endurance measurements.
تدمد: 2470-1343
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba52b9fa37fda5cc08e7dc6b8fc9c763
https://pubmed.ncbi.nlm.nih.gov/33225155
حقوق: OPEN
رقم الأكسشن: edsair.doi.dedup.....ba52b9fa37fda5cc08e7dc6b8fc9c763
قاعدة البيانات: OpenAIRE
الوصف
تدمد:24701343