RT Journal Article
T1 Comparison Of Mechanical And Chemical Nanocellulose As Additives To Reinforce Recycled Cardboard
A1 Sánchez Salvador, José Luis
A1 Balea Martín, Ana
A1 Monte Lara, M. Concepción
A1 Negro Álvarez, Carlos Manuel
A1 Miller, Meaghan
A1 Olson, James
A1 Blanco Suárez, Ángeles
AB Recycling cycles cause a decrease in mechanical paper properties due to cellulose fiber degradation. The use of cellulose micro/nanofibers (CMF/CNF) to reinforce paper strength has been well studied, although it has been found to have negative effects on drainage. However, the application of CMF/CNF as paper reinforcement is affected by the nanocellulose type. Thus in this study mechanical and chemical treatments in CNF production were compared. Old corrugated container (OCC) pulp used to produce recycled cartonboard was reinforced with 1) CMF from never-dried northern bleached softwood kraft pulp (NBSK) highly refined in a 16-inch low consistency refiner at 1200 rpm and 25 kW of net power; and 2) CNF from NBSK pulp treated by TEMPO-mediated oxidation and homogenization at 600 bars. CMF/CNF and OCC were pulped at the same time and handsheets formed with cationic starch (CS) as retention system. Mechanical, drainage and flocculation properties were evaluated and compared. Data were also compared with other sources of TEMPO CNF. Results show an improvement in mechanical properties, drainage and flocculation when OCC is reinforced with CMF obtained with LCR. Therefore, high fibrillation was not necessary to improve mechanical paper or cardboard properties.
PB Nature
SN 2045-2322
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/7214
UL https://hdl.handle.net/20.500.14352/7214
LA eng
NO Ministerio de Economía y Competitividad
NO Universidad Complutense de Madrid y Banco de Santander
DS Docta Complutense
RD 1 may 2024