INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Beneficial in-situincorporationofnanoclaytowaterbornePVAc/PVOH dispersion adhesivesforwoodapplications
Autor/es:
PERUZZO, P.J.; BONNEFOND, A.; REYES, Y.; FERNÁNDEZ, M.; FARE, J.; RONNE, E.; PAULIS, M.; LEIZA, J.R.
Revista:
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 48 p. 295 - 302
ISSN:
0143-7496
Resumen:
Nanoclay/polyvinyl
acetate waterborne adhesives were prepared by using a two-step polymerization
process. First, seed polymer particles containing the clay were obtained by
batch miniemulsion polymerization. Then, the clay was buried within the
particles by the addition of neat monomer in a second step. The final stable
dispersions could have up to 50 wt% of solids content. TEM images clearly
showed the presence of clay inside the polymer colloids, although not totally
exfoliated. The addition of nanoclay produced adhesives with higher water and
heat resistance judged by the water swelling behavior and thermal degradation
properties, which was also reflected in their better adhesive performance under
wet conditions (D3 tests according EN204) and high temperatures (WATT91) of the
samples containing clay with respect to the pristine dispersions.