การศึกษาวิเคราะห์ผลระยะยาวของวัสดุเคลือบอนุภาคนาโนแคลเซียมคาร์บอเนตและเซลลูโลสพอลิเมอร์ต่อสมบัติและการเสื่อมสภาพของกระดาษด้วยการบวนการเร่งอายุ
Article Sidebar
Main Article Content
บทคัดย่อ
Paper has been used as main writing and printing carrier for storing human history and knowledge. However, paper deteriorates overtime due to the generated acidity. Cellulose chains are depolymerized by acid-hydrolysis and the consequences are yellowing and massive loss of mechanical strength of paper. In this project, an organic solvent-based process using a polysaccharide derivative and alkaline nanoparticles for the simultaneous deacidification and strengthening of paper has been developed. Colloidal dispersion of CaCO3 nanoparticles (size ca. 100 nm) stabilized by ethyl cellulose in ethanol was employed to reduce acidity and strengthen the paper. The treatment was performed impregnating the old acidic papers with the dispersion. Various techniques of analysis showed a good distribution of CaCO3 nanoparticles on cellulosic fiber of papers. The papers were successfully neutralized from pH of 5 to pH of 7, inhibiting the degradation of papers. Moreover, the mechanical properties of papers were improved due to the surface coating of ethyl cellulose polymer. Lastly, aging test confirmed that the degradation of papers could be delayed by treatment with the developed process.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
ผลงานที่ได้รับการตีพิมพ์ ถือเป็นลิขสิทธิ์ของวารสารฯ
References
Baty, J. W.; Maitland, C. L.; Minter, W.; Hubbe, M. A.; Jordan-Mowery, S. K., “Deacidification for the Conservation and Preservation of Paper-Based Works: A Review”, BioResources 2010, 5, 1955-2023.
Chamberlain, D., “Anion Mediation of Aluminium-Cata-lysed Degradation of Paper”, Polym Degradation Stab 2007, 92, 1417-1420.
Moiseev, Y. V.; Khalturinskii, N. A.; Zaikov, G. E., “The Mechanism of the Acid-Catalysed Hydrolysis of Gluco-sides”, Carbohydr. Res. 1976, 51, 23-37.
Poggi, G.; Toccafondi, N.; Melita, L. N.; Knowles, J. C.; Bozec, L.; Giorgi, R.; Baglioni, P., “Calcium Hydroxide Nanoparticles for the Conservation of Cultural Heritage: New Formulations for the Deacidification of Cellulose-Based Artifacts”, Applied Physics A: Materials Science and Processing 2013, 1-9.
Giorgi, R.; Dei, L.; Ceccato, M.; Schettino, C.; Baglioni, P., “Nanotechnologies for Conservation of CulturalHeritage: Paper and Canvas Deacidification”, Langmuir 2002, 18, 8198-8203.
Rodriguez-Navarro, C.; Suzuki, A.; Ruiz-Agudo, E., “Alcohol Dispersions of Calcium Hydroxide Nanoparticles for Stone Conservation”, Langmuir 2013, 29, 11457-11470.
Amornkitbamrung, L.; Mohan, T.; Hribernik, S.; Reichel, V.; Faivre, D.; Gregorova, A.; Engel, P.; Kargl, R.; Ribitsch, V., “Polysaccharide Stabilized Nanoparticles for Deacidification and Strengthening of Paper”, RSC Adv. 2015, 5, 32950-32961.
Amornkitbamrung, L.; Marnul, M.; Thirvengadam, P.; Hribernik, S.; Kovalcik, A.; Kargl, R.; Stana- Kleinschek, K.; Mohan, T., “Strengthening of Paper by Treatment with a Suspension of Alkaline Nanoparticles Stabilized by Trimethylsilyl Cellulose”, Nano-Structures & Nano-Objects 2018, 16, 363-370.
Abdel-Halim, E. S., “Chemical Modification of Cellulose Extracted from Sugarcane Bagasse: Preparation of Hydroxyethyl Cellulose”, Arabian Journal of Chemistry 2013.
Rodriguez-Navarro, C.; Suzuki, A.; Ruiz-Agudo, E., “Alcohol Dispersions of Calcium Hydroxide Nanoparticles for Stone Conservation”, Langmuir 2013, 29, 11457-11470.
Poggi, G.; Giorgi, R.; Toccafondi, N.; Katzur, V.; Baglioni, P., “Hydroxide Nanoparticles for Deacidification and Concomitant Inhibition of Iron-Gall Ink Corrosion of Paper”, Langmuir 2010, 26, 19084-1909.