Jonoobi, M., Grami, M., Ashori, A., & Ebrahimi, G.

Measurement 94: 451–455.

2016

The main objective of this study was to investigate the applied properties of particleboard panels made
from bagasse, which were either treated or not treated with gaseous ozone (O3). Variable parameters
were ozone exposure time (1–3 min) at 9 ppm and storage period (1–5 months). Other parameters such
as resin content (12 wt%), hardener content (1 wt%), type of hardener (NH4Cl), press closing time (5 mm/
s), board density (0.70 g/cm3), and press pressure (30 kg/m2) were held constant. The experimental panels
were tested for their mechanical properties including modulus of elasticity (MOE), modulus of rupture
(MOR); and internal bonding strength (IBS) and physical properties in terms of water absorption (WA)
and thickness swelling (TS) according to the procedures defined by EN standards. Overall results showed
that all panels made from treated bagasse exceeded the EN standards for MOE, MOR, and IBS. However,
WA and TS values decreased after ozone pretreatment compared to the un-treated (control) panels.
Application of Duncan’s Multiple Range Test for the mean values of the results showed that the effects
of both variables, except their interactions, on the mechanical and physical properties were highly significant
(p 6 0.01%). All the mechanical properties of the panels decreased when the treatment duration
increased from 1 to 5 months.