2026-04-13T13:30:20Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/252102024-10-29T21:03:38Zcom_2072_452955com_2072_2054col_2072_453062

00925njm 22002777a 4500 dc Balea, Ana author Monte, M. Concepcion author Fuente González, Elena de la author Sanchez-Salvador, José Luis author Tarrés Farrés, Joaquim Agustí author Mutjé Pujol, Pere author Delgado Aguilar, Marc author Negro Álvarez, Carlos author 2023-09-11 The cost-effective implementation of nanofibrillated cellulose (CNF) at industrial scale requires optimizing the quality of the nanofibers according to their final application. Therefore, a portfolio of CNFs with different qualities is necessary, as well as further knowledge about how to obtain each of the main qualities. This paper presents the influence of various production techniques on the morphological characteristics and properties of CNFs produced from a mixture of recycled fibers. Five different pretreatments have been investigated: a mechanical pretreatment (PFI refining), two enzymatic hydrolysis strategies, and TEMPO-mediated oxidation under two different NaClO concentrations. For each pretreatment, five high-pressure homogenization (HPH) conditions have been considered. Our results show that the pretreatment determines the yield and the potential of HPH to enhance fibrillation and, therefore, the final CNF properties. These results enable one to select the most effective production method with the highest yield of produced CNFs from recovered paper for the desired CNF quality in diverse applications The authors are grateful for the financial support by the Spanish Ministry of Science and Innovation to the projects CTQ20217-85654-C2-1-R and CTQ2017-85654-C2-2-R (NANOPROSOST) and PID2020-113850RB-C21 and PID2020-113850RB-C22 (CON-FUTURO-ES) and the Community of Madrid (project S2018/EMT-4459 “RETOPROSOST2-CM”) 9 http://hdl.handle.net/10256/25210 Nanofibres Nanofibers Paper vell -- Reciclatge Waste paper -- Recycling Fit-for-Use Nanofibrillated Cellulose from Recovered Paper