Synthetic Ni-talc as filler for producing polyurethane nanocomposites

EINLOFT SANDRA; MANOELA ARGENTON PRADO; GUILHERME DIAS; CARLOS CARONE; ROSANE LIGABUE; ANGELA DUMAS; CHRISTOPHE LE ROUX; PIERRE MICOUD; FRANÇOIS MARTIN

JOURNAL OF APPLIED POLYMER SCIENCE

JOHN WILEY & SONS INC

Lugar: New York; Año: 2015 vol. 132

0021-8995

New synthetic Ni-talc was used as filler in the synthesis of PU nanocomposites by in situ polymerization and compared to natural talc in order to emphasize the contribution of the new material. Good dispersion of Ni-talc was supported by homogeneous green coloration observed in the polymer matrix. The XRD analyses indicate the intercalation of the polymeric matrix into the filler layers by the increase in d001-spacing value of the Ni-talc for the nanocomposites when compared to the pristine filler. The nanocomposites obtained with synthetic talc showed an improvement in the crystallization temperature as well as in thermal stability when compared to pure PU and the composite obtained with natural talc.The young modulus of PU/talc materials containing both Ni-talc and natural talc were slight higher than pure PU. As shown by SEM Ni-talc fillers were well dispersed into the polymeric matrix probably due to the good compatibility of both phases filler/polymer mainly achieved by the filler OH interaction with the urethane group of the polymeric chain.