TY - JOUR
T1 - Influence of X-ray opaque BaSO4 nanoparticles on the mechanical, thermal and rheological properties of polyoxymethylene nanocomposites
AU - Romero-Ibarra, Issis C.
AU - Bonilla-Blancas, Elizabeth
AU - Sánchez-Solís, Antonio
AU - Manero, Octavio
N1 - Funding Information:
I.C. Romero-Ibarra thanks the CONACyT for the scholarship (no. 181930) and the PAPIIT UNAM project IN-116510/22. The authors acknowledge the contributions from O. Novelo, C. Flores, E. Fregoso, F. Calderas, R. Cedillo and I. Vazquez in the SEM, TEM, thermal analysis, rheological measurements and radio-opacity determinations, respectively. M.F. Garcí a-S á nchez is also acknowledged for the fruitful discussions.
PY - 2012/8
Y1 - 2012/8
N2 - This work evaluates the influence of a radiopaque reinforcement, barium sulfate (BaSO4), on the mechanical, rheological and thermal properties of polyoxymethylene (POM). Nanocomposites of POM containing spherical nanoparticles of BaSO4 (0, 1,2, 3 phr) were obtained by melt extrusion in a twin-screw equipment followed by injection molding. The mechanical, thermal and rheological properties of these nanocomposites and the dispersion state of the particles were investigated. Scanning and transmission electron microscopy revealed the morphology of the products. The main objective of this work is the production of nanocomposites with sulfate concentration enough to acquire radiopaque properties while maintaining the mechanical properties of the matrix. In this regard, mechanical and rheological properties were found similar to those of the polymer matrix, but radiopaque contrast tests revealed the influence of the nanoparticles concentration on the optical properties of the composites. The production of these nanocomposites suggests potential applications in the biomedical sector given their unique radioopacity properties.
AB - This work evaluates the influence of a radiopaque reinforcement, barium sulfate (BaSO4), on the mechanical, rheological and thermal properties of polyoxymethylene (POM). Nanocomposites of POM containing spherical nanoparticles of BaSO4 (0, 1,2, 3 phr) were obtained by melt extrusion in a twin-screw equipment followed by injection molding. The mechanical, thermal and rheological properties of these nanocomposites and the dispersion state of the particles were investigated. Scanning and transmission electron microscopy revealed the morphology of the products. The main objective of this work is the production of nanocomposites with sulfate concentration enough to acquire radiopaque properties while maintaining the mechanical properties of the matrix. In this regard, mechanical and rheological properties were found similar to those of the polymer matrix, but radiopaque contrast tests revealed the influence of the nanoparticles concentration on the optical properties of the composites. The production of these nanocomposites suggests potential applications in the biomedical sector given their unique radioopacity properties.
KW - BaSO
KW - Nanocomposites
KW - Nanoparticles
KW - Polyoxymethylene
KW - Radio-opacity
UR - http://www.scopus.com/inward/record.url?scp=84869471865&partnerID=8YFLogxK
U2 - 10.1515/polyeng-2011-0135
DO - 10.1515/polyeng-2011-0135
M3 - Artículo
AN - SCOPUS:84869471865
SN - 0334-6447
VL - 32
SP - 319
EP - 326
JO - Journal of Polymer Engineering
JF - Journal of Polymer Engineering
IS - 4-5
ER -