Technological properties of particleboards produced using mixture of pines and bamboo

Abstract

This paper aimed to evaluate the technological properties of particleboards produced with particles of unconventional species, bamboo of the species Phyllostachys edulis, and of the genus traditionally used by the sector for the production of the particulate panels in Brazil, Pinus spp.The bamboo splints of 3 years old were collected in Frei Rogério, Santa Catarina, being transformed into particles in a mill hammer, while the particles of Pinus spp. were collected from the industrial process of MDP production in Bonet Madeiras e Papéis Ltda Company in Santa Cecília, Santa Catarina. The company used eight-year-old logs of P. taeda and P. elliottii from the thinning process, without distinction of the species. The experiment was composed of five compositions with mixing the bamboo and wood particles in different proportions ((T1)100:0%; (T2)75:25%; (T3)50:50%; (T4)25:75%; (T5)0:100%). The panels were produced nominal density of 700 kg / m³ and pressing cycle of 160ºC and 40 kgf/cm² for 8 minutes. Results reporting physical and mechanical properties of panels were evaluated through Analysis of Variance and Tukey´s Test at 95% probability. The results evidenced that bamboo particles presented potential for the production of particleboard. The most promising results were presented with the addition of 50% of bamboo in the panel composition (T3), mainly by means observed for dimensional stability, as for strength and stiffness. Values of internal bond presented significantly lower averages with the addition of more than 25% of bamboo.

Propriedades físicas de painéis de alta densidade (HDP) de pinus, bambu e coparticipação de erva-mate

“…Os teores de umidade variaram entre 8,79% (mistura bambu e erva-mate) até 10,86% (pinus puro), sendo que todos os tipos de painéis apresentaram valores inferiores ao de equilíbrio da madeira serrada, em idênticas condições de climatização. A justificativa para a reduzida higroscopicidade pode estar associada a perda de água de constituição, devido ao processo termomecânico (elevada temperatura e pressão) aplicado, aliado à adição de resina e aditivos (Cunha et al, 2019;Weber & Iwakiri, 2015).…”

Wood fibre recapture from process water during wet-forming of fiberboard: Process modelling with environmental and economic assessment

“…Second, it prevents the accumulation of wood waste and the formation of landfills. Third, recycling fibre means reusing it, and if it is recycled efficiently (under market conditions), it brings both economic and environmental benefits (DaCunha et al 2016;Viger-Gravel et al 2017;Ihnat et al 2018;Zeng et al 2018).…”

“…One method to recover wood fibre and reuse it in the core production of fibreboards, paper, and cardboard is by recapturing it directly from white water (Michanickl 1996;Miao et al 2013;DaCunha et al 2016;Grossmann and Zelm 2016;Viger-Gravel et al 2017;Ihnat et al 2018Ihnat et al , 2020Zeng et al 2018;Hernandez et al 2021).The most widely used methods of recapturing fibre from wastewater involve sedimentation flotation with subsequent dehydration by various methods (Hubbe et al 2016;Voinov et al 2022).…”