Effect of Linear Chain Carboxylic Acid Anhydrides on Physical and Mechanical Properties of Rubber (Hevea brasiliensis), Acacia, (Acacia spp.), and Oil Palm (Tinnera spp.) Woods
Table 2
The results of correlation test between the basic properties of modified wood.
Properties
PU (%)
WG (%)
BC
Rubber wood
Density (after modification)
−0.37Ns
0.53*
−0.53*
Density (increment)
0.49Ns
0.83**
−0.65**
Void volume (after modification)
0.38Ns
−0.53*
0.53*
Void volume changes
−0.32Ns
−0.81**
0.59*
Acacia spp.
Density (after modification)
0.14Ns
0.13Ns
0.07Ns
Density (increment)
0.52Ns
0.55Ns
0.34Ns
Void volume (after modification)
−0.15Ns
−0.13Ns
−0.07Ns
Void volume changes
−0.32Ns
−0.43Ns
−0.5Ns
Oil palm
Density (after modification)
−0.71**
0.69**
−0.19Ns
Density (increment)
−0.11Ns
0.96**
−0.54*
Void volume (after modification)
0.71**
−0.69**
0.19Ns
Void volume changes
0.39Ns
−0.93**
0.38Ns
PU: percentage uptake, WG: weight gain, BC: bulking coefficient. Ns: not significant, significant at the 0.05 level, andsignificant at the 0.01 level.