|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Metal and Polymer Matrix Composites II
||The Role of Titania Surface on the Degradation Behavior of LLDPE Composites
||Hamilton M Viana, Patrícia Negrini Poveda, Leonardo Andrade Silva
|On-Site Speaker (Planned)
||Hamilton M Viana
Titania has been applied as white pigment in polymeric composites. Some opposite effects have been reported due to Titania in polymer when undergoes weather ageing, mainly UV ageing. It is not clear which specific factor causes protection or degradation.
This study has intended to verify influence of these Titania factors:
a) Particle size;
b) Surface treatment;
Two Titania particle sizes were applied: 50 nm and 0.01 mm diameter and it were surface treated with organosilane. A part of it was irradiated with electron beam. LLDPE composites were prepared with a thermokinetic mixer, hot pressed, and specimens were cut. Part of specimens was aged on a UV chamber. Aged and non-aged composites specimens were evaluated by: mechanical tensile tests, DSC, FTIR, SEM, XRD and wettability. Obtained results allow to conclude that there is a specific factor, related to Titania, that plays an important rule on the UV polymer degradation.
||Planned: A print-only volume