2026-06-27T10:30:56Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/178332025-03-18T14:22:15Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Campano Tiedra, Cristina
author
Miranda Carreño, Rubén
author
Merayo, Noemí
author
Negro Álvarez, Carlos Manuel
author
Blanco Suárez, María Ángeles
2023-06-17T21:56:56Z
2023-06-17T21:56:56Z
2017
Campano, Cristina, et al. «Direct Production of Cellulose Nanocrystals from Old Newspapers and Recycled Newsprint». Carbohydrate Polymers, vol. 173, octubre de 2017, pp. 489-96. DOI.org (Crossref), https://doi.org/10.1016/j.carbpol.2017.05.073.
0144-8617
10.1016/j.carbpol.2017.05.073
https://hdl.handle.net/20.500.14352/17833
https://doi.org/10.1016/j.carbpol.2017.05.073.
Cellulose nanocrystals (CNC) are high added value products which can be used in many applications. In this research, CNC were directly produced from two recycled papers: old newspapers (ONP) and 100% recycled newsprint (NP). CNC were also obtained from NP by previously isolating the cellulose particles by alkali and bleaching treatments. CNC yield and quality was assessed through lignin and ash determination, X-ray diffraction analysis, atomic force microscopy and thermogravimetric analysis. Not only crystallinities resulted similar (92-95%), but also aspect ratios (L/d) (each in the range of 50-120). However, different CNC purities and hydrolysis and process yields were obtained. Thus, CNC purity decreased from 93 to 77%, hydrolysis yield was reduced from 64 to 58% but process yield strongly improved from 35 to 60% when no pretreatment was used. Therefore, this study proves the viability of the direct production of CNC from recycled papers.
eng
Direct Production of Cellulose Nanocrystals from Old
Newspapers and Recycled Newsprints
journal article
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Direct production of Cellulose Nanocrystals from old newspapers and recycled newsprints.pdf.txt
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Direct_production_of_Cellulose_Nanocrystals.pdf.txt