Journal of Nanomaterials / 2015 / Article / Tab 3

Research Article

Effects of Adding Multiwall Carbon Nanotubes on Performance of Polyvinyl Acetate and Urea-Formaldehyde Adhesives in Tropical Timber Species

Table 3

Values of entropy factor, activation energy, degree of the function of decomposition, and correlation coefficient of kinetics of decomposition of PVAc and UF adhesives adding different concentrations of MWCNTs-OH.

AdhesiveReactionMWCNTs concentration (%)Entropy factor ( in S−1)Activation energy ( in kJ mol−1)Degree of the function of decomposition ()Correlation coefficient ()

PVAcFirst0.00 
0.05 
0.10
4.33 × 1015
5.35 × 1016
6.53 × 1018
189.34 
204.67 
227.28
2.0 
2.1 
2.3
0.77 
0.83 
0.82
Second0.00 
0.05 
0.10
6.76 × 1037
4.38 × 1020
6.69 × 1023
403.94 
232.27 
323.01
4.6 
2.3 
2.9
0.75 
0.83 
0.71

UF0.00 
0.05 
0.10
2.03 × 1023
2.72 × 1033
1.01 × 1041
237.6 
333.16 
414.63
6.83 
9.7 
10.8
0.98 
0.95 
0.96