Rice Husk Filled Polymer Composites

Table 2

(a) Chemical and (b) physical properties of typical RHA fillers [34].

Property	WRHA	BRHA
(a) Chemical composition (%)
CaO	0.360	0.120
MgO	0.160	0.078
Fe2O3	0.041	0.022
K2O	0.690	0.950
Na2O	0.034	0.018
Al2O3	0.025	0.023
P2O5	0.570	0.270
SiO2 (silica)	92.200	53.880
Loss of ignition (LOI)	1.620	44.480
(b) Physical properties
Particle size (μm)	6.60	19.50
Surface area (m^2/g)	1.40	26.80
Density (g/cm^3)	2.20	1.80