Compósitos de matriz termofixa fenólica reforçada com fibras vegetais

Published on Dec 1, 1999in Polimeros-ciencia E Tecnologia1
· DOI :10.1590/S0104-14281999000400028
Jane Maria Faulstich de Paiva9
Estimated H-index: 9
Jane Maria Faulstich de Paiva16
Estimated H-index: 16
+ 0 AuthorsElisabete Frollini38
Estimated H-index: 38
In this work phenolics pre-polymer (resol type) and pre-polymer lignin-phenol (40% w/w sugar cane bagasse lignin) were synthesized. These pre-polymers were used to prepare matrice of several composites reinforced with bagasse fibers, sisal fibers and curaua fibers. The bagasse and sisal fibers were extracted with cyclohexane/ethanol. The improvement in impact strength was small for sugar cane bagasse reinforced composites and it was very significant for sisal reinforced composites. The curaua fibers were submitted to the same extration above mentioned and then treated with a 10% solution of NaOH. The composites containing treated curaua fibers also presented improvement in the impact strength.
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