2.2. Methods
2.2.1. Rice straw preparation
Rice straw was chipped into particles with lengths of 10–30 mm.To investigate the effect of high frequency heating on panel properties, the moisture content (MC) of particles was adjusted to 10,14 and 18%. In addition, five types of particles were obtained by screening. Table 1 shows the distribution of particle size deter-mined by the screening analysis.