Abstract
Costa Rica has extensive areas of tropical forests that, managed with care and knowledge, can provide renewable raw materials and conserve biodiversity. Here we characterize the branches, leaves and bark of the “Mora Tree”, Maclura tinctoria. We manufactured composite polymeric materials and applied infrared spectrometry, liquid chromatography, optical microscopy, and the analysis of thermal and mechanical properties. We found polyphenols in all parts of the tree. The natural substrate increases crystallization temperature and reduces the crystallinity of low density polyethylene (LDPE). The elasticity modulus is higher for the composite material than for the LDPE. The fibers of this species are a promissing alternative for new products and to reduce the environmental impact of traditional polymeric materials.
Highlights
RESUMEN: Costa Rica cuenta con extensas áreas de bosques tropicales, las cuales deben ser manejadas con cuidado y con el conocimiento adecuado, para lograr conservar la biodiversidad y proporcionar materias primas renovables
The elasticity modulus is higher for the composite material than for the low density polyethylene (LDPE)
Es así como un posible candidato de la naturaleza para ser incorporado como refuerzo o relleno de materiales poliméricos es el árbol Maclura tinctoria conocido popularmente en Costa Rica como árbol de mora
Summary
RESUMEN: Costa Rica cuenta con extensas áreas de bosques tropicales, las cuales deben ser manejadas con cuidado y con el conocimiento adecuado, para lograr conservar la biodiversidad y proporcionar materias primas renovables. Palabras clave: Maclura tinctoria, materiales poliméricos compuestos, fibras de árbol de mora, polietileno de baja densidad PEBD, caracterización. Preparación del material compuesto: Como matriz polimérica se empleó polietileno de baja densidad (PEBD) grado 15803-020 fabricado por JSC “ Nefte Him Sevilen”en Kazan (Rusia), y como material de relleno o refuerzo la mezcla molida de las hojas, tallos y cáscaras del Maclura tinctoria (figura 2A).
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