Table 4. Physical properties of treated specimens of each wood species

Property	Treatment	Jabon	Sengon	Mangium	Pine
WPG (%)	FA wood	86.3 (6.0)^a	30.1 (3.7)^b	19.1 (4.8)^c	15.2 (4.9)^c
Density (g/cm³)	Untreated	0.34 (0.02)^a	0.36 (0.05)^a	0.60 (0.05)^c	0.72 (0.04)^d
Density (g/cm³)	FA wood	0.64 (0.02)^c	0.46 (0.05)^b	0.73 (0.09)^d	0.83 (0.05)^e
Moisture content (%)	Untreated	12.61 (0.63)^e	11.46 (1.12)^d	11.03 (1.23)^e	9.69 (1.26)^d
Moisture content (%)	FA wood	2.11 (0.34)^a	2.65 (0.36)^ab	3.75 (0.44)^c	3.16 (0.34)^bc
Water absorption (%)	Untreated	66.9 (6.6)^f	41.2 (4.9)^e	32.3 (4.0)^d	27.5 (3.6)^c
Water absorption (%)	FA wood	5.85 (0.64)^a	6.57 (0.63)^a	7.63 (0.69)^ab	10.65 (1.02)^b
Swelling (%)	Untreated	8.01 (0.97)^d	8.01 (0.68)^d	11.08 (1.02)^f	9.75 (0.74)^e
Swelling (%)	FA wood	1.38 (0.20)^a	2.38 (0.19)^b	2.63 (0.32)^b	4.21 (0.51)^c
Anti-swelling efficiency (%)	FA wood	82.7 (2.7)	70.0 (4.4)	76.2 (2.1)	56.7 (5.3)
Shrinkage (%)	Untreated	6.89 (0.42)^e	3.18 (0.36)^c	4.15 (0.59)^d	10.40 (1.16)^f
Shrinkage (%)	FA wood	1.40 (0.27)^a	1.39 (0.23)^a	1.96 (0.20)^b	3.69 (0.60)^d
Anti-shrinkage efficiency (%)	FA wood	79.6 (4.1)	55.9 (8.7)	52.0 (6.6)	63.9 (8.3)

Values in parentheses are standard deviations.
Values followed by the same letter within a row are not statistically different based on Duncan’s multiple range test.
WPG: weight percent gain, FA: furfuryl alcohol.