Caros amigos leitores,

Hoje recebi a notícia do aceite de um novo artigo do meu grupo de pesquisa. Esse artigo é intitulado “Photostabilization of polystyrene/montmorillonite nanocomposite. A Factorial Experimental Design”, será publicado na revista Journal of Applied Polymer Science. O resumo do artigo está a seguir:

The weathering behaviour of PS and PS/MMT nanocomposite with and without addition of UV absorber and/or antioxidant was investigated. Samples were exposed to UV radiation in the laboratory for periods of up to ~12 weeks. The samples were exposed for various irradiation intervals, and their tensile and impact strength was monitored through a Factorial Experimental Design 24. The molecular weight, yellowness and fracture surface were also monitored. The results generated by ANOVA Table showed that UV absorber and exposure time had the most important effects positive and negative, respectively. These results could be seen for neat PS and PS/MMT nanocomposite. The presence of antioxidant alone did not have any significant effect but when mixed with UV absorber presented a small synergism. These results corroborate with molecular weight, yellowing and fracture surface of tensile and impact samples.

Até o próximo post!