Research Article

Micro- and Nanofibrillated Cellulose (MNFC) from Pineapple (Ananas comosus) Stems and Their Application on Polyvinyl Acetate (PVAc) and Urea-Formaldehyde (UF) Wood Adhesives

Table 2

Activation energy and entropy factor for the decomposition kinetics of PVAc and UF wood adhesives (with different concentrations of MNFC), and pure MNFC.

AdhesiveReactionMNFC (%)Activation energy (kJ mol-1)Entropy factor (s-1)Correlation coefficient ()

PVAc10.0211.450.95
0.5212.590.95
1.0212.670.95
20.090.100.93
0.570.490.90
1.083.900.93

UF10.0336.910.94
0.5345.640.94
1.0323.270.94
20.0118.710.94
0.5117.030.94
1.0115.420.94

Reaction
Pure MNFC124.360.78
2130.420.93
315.200.91