 The paper aims to study the properties of Yankee pineapples leaf fibers, PALF, biophilas in composite applications by characterizing their chemical composition, surface morphology, and mechanical, crystallinity, and thermal properties, revealing that the fiber has a high thermal degradation of 340 degrees celsius, 34% yield, a rough external surface, good compatibility with matrix polymer, and a tensile strength of 420.3 mPa for a 40mm gauge length. This article was authored by M. I. Najab, M. T. H. Sultan, Yoshito Andu, and others.