All-lignocellulosic fiberboard from corn biomass and cellulose nanofibers

Comparison between two different pretreatment technologies of rice straw fibers prior to fiberboard manufacturing: Twin-screw extrusion and digestion plus defibration

“…In addition, a slight increase in the aspect ratio was observed with an increasing liquid/solid ratio (i.e. from 4 to 6) in the digester reactor and Waldron-Sprout defibrator, and such phenomenon was previously observed for twin-screw extrusion (Table 4) but also in the case of a steaming plus a mechanical defibration treatment (Alila et al, 2013;Flandez et al, 2012;Theng et al, 2015a). Such aspect ratio increase resulted mainly in the slight increase of the mean length of fibers, from 371 μm to 386 μm (i.e.…”

“…Several researchers have investigated the use of rice straw and other agricultural wastes as fiber source in the composite industry (El-Kassas and Mourad, 2013;Evon et al, 2012;Halvarsson et al, 2008;Li et al, 2010;Pan et al, 2010;Theng et al, 2015a;Wu et al, 2011;Zhang and Hu, 2014;Zhao et al, 2011), in particular to produce fiberboards by thermopressing, the latter being usable for furniture or in the building industry. Different methods for fiber pretreatment were tested, i.e.…”

“…Evon et al (2015Evon et al ( , 2014Evon et al ( , 2012Evon et al ( , 2010aEvon et al ( , 2010b) also produced self-bonded fiberboards from the cake generated during the biorefinery of sunflower whole plant using a twin-screw extruder. In addition, Theng et al (2015a) prepared a thermo-mechanical pulp from corn biomass by digestion plus defibration to produce binder-free fiberboards. Migneault et al (2010) produced medium-density fiberboards using thermo-mechanical pulps from different pulping processes.…”

Fiberboards Made from Corn Stalk Thermomechanical Pulp and Kraft Lignin as a Green Adhesive

“…A suspension of corn stalks was submitted to steam-water treatment by keeping the suspension at 160 °C for 15 min in a reactor, at a water-to-solid ratio of 6:1 (liters of water per kg of solid). The obtained pulp was rinsed in cold water and then submitted to mechanical defibration in a Sprout-Waldron refiner (model 105-A, Andritz, Janesville, WI, USA), which was responsible for fiber individualization (Theng et al 2015).…”

Utilization of Cellulose Nanofibrils as a Binder for Particleboard Manufacture

“…Veigel et al (2012) utilized CNF as an additive in the formulation of formaldehyde-based adhesives of particleboards and oriented strand boards to improve their mechanical properties. Some recent study has been done to use 2,2,6,6-tetramethylpiperidine-l-oxyl (TEMPO) mediated CNF as a reinforcing agent in the manufacture of fiberboards from corn thermomechanical fibers (Theng et al 2015). This paper is focused on the manufacturing of particleboard panels using CNF that is produced through a refining process as a sole binder.…”