Effect of Sugar Palm Fiber Surface on Interfacial Bonding with Natural Sago Matrix

Table 2

Composition of immersed fibers.

Element	Oxide	Green (%)	1 W (%)	2 W (%)	3 W (%)	4 W (%)
Silicon	SiO2	30.45	35.95	44.33	33.25	40.67
Aluminum	Al2O3	21.9	9.49	10.38	16.76	14.23
Sodium	Na2O	18.44	14.78	16.87	15.25	12.17
Magnesium	MgO	9	12.06	11.23	14.14	12.52
Potassium	K2O	0.71	1.73	0.3	1.23	1.07
Calcium	CaO	—	4.04	0.98	2.42	0.35
Phosphorus	P2O5	5.06	7.72	7.49	7.33	8.93
Sulfur	SO3	4.74	11.54	6.82	7.74	8.32