Journal of Nanomaterials / 2015 / Article / Tab 4

Research Article

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

Table 4

Moisture content and percentage of wood failure in shear test of PVAc and UF wood adhesive adding different concentrations of MWCNTs-OH.

SpeciesMWCNTs (wt.%)Moisture content (%)Percentage of wood failure
PVAc adhesiveUF adhesivePVAc adhesiveUF adhesive
DryWetDryWetDryWetDryWet

Acacia mangium0.0011.5A32.6A12.4A35.7A72.7A4.3A32.2A19.5A
0.0511.7A32.8A12.4A31.7B26.3B0.0A36.5B34.0B
0.1012.1A31.6A12.4A31.7B31.4B27.3B43.0C34.0B

Cedrela odorata0.0010.8A31.0A12.7A28.0A66.5A0.0A30.7A27.8A
0.0511.5A32.0A12.6A29.3A70.3A0.0A27.8A6.7B
0.1012.5A30.9A12.3A29.8A68.3A8.3B49.1B9.4B

Cordia alliodora0.0010.5A32.5A12.7A32.8A81.3A1.5A38.9A31.0A
0.0511.4A26.9B11.7A33.0A68.5B6.9B41.9A32.7A
0.109.9A25.7B12.1A31.3A68.5B15.4C61.9B32.6A

Enterolobium cyclocarpum0.0010.8A40.4A11.7A41.4A76.6A84.8A59.6A41.0A
0.0510.4A42.3A11.4A42.4A97.7B37.8B55.7A55.0B
0.1010.3A41.6A11.3A42.3A89.0C54.8C53.3A52.7B

Gmelina arborea0.0010.0A20.5A12.3A26.1A52.6A9.1A2.6A3.6A
0.0510.0A21.6A11.9A23.4B4.8B1.0B1.3A2.1A
0.1010.7A22.0A11.5A22.5B0.0B0.2B0.8A2.0A

Goethalsia meiantha0.009.8A38.1A12.3A39.1A37.5A15.4A55.7A60.6A
0.059.7A38.8A11.8A38.5A93.3B75.5B41.8B33.2B
0.1010.5A39.2A11.7A37.0A96.0B69.2B19.0C52.2C

Ochroma pyramidale0.0010.8A65.1A12.2A57.1A99.6A1.3A68.2A48.8A
0.0511.3A58.0B11.0A58.8A44.0B44.0B68.7A52.4A
0.1011.7A58.5B11.8A50.7B69.9C14.2B73.2A80.8B

Tectona grandis0.0010.9A23.1A12.0A26.0A16.7A0.0A8.0A10.1A
0.0511.9A25.1A12.2A26.1A27.7B0.0A12.1B10.0A
0.1011.9A24.0A12.0A27.0A21.6B0.0A13.5B9.7A

Vochysia ferruginea0.0010.2A32.7A11.7A32.1A38.5A50.0A53.5A37.3A
0.0510.5A30.9A10.6A33.5A55.0B81.3B79.1B36.0A
0.1011.7A32.1A10.8A32.5A56.3B78.7B76.9B56.6A