This research is to study the properties of pineapple leaf fiber reinforced polycarbonate composites (PC/
PALF). Surface of pineapple leaf fiber (PALF) was pre-treated with sodium hydroxide (PALF/NaOH) and
modified with two different functionalities such as c-aminopropyl trimethoxy silane (PALF/Z-6011)
and c-methacryloxy propyl trimethoxy silane (PALF/Z-6030). The effects of PALF content and chemical
treatment were investigated by Fourier transform infrared spectroscopy, scanning electron microscopy
and mechanical testing. The modified pineapple leaf fibers composite also produces enhanced mechanical
properties. Young’s modulus is the highest in the case of the PALF/NaOH composites. The PALF/Z-
6011 composites showed the highest tensile strength and impact strength. In thermal property, the
results from thermogravimetric analysis showed that thermal stability of the composites is lower than
that of neat polycarbonate resin and thermal stability decreased with increasing pineapple leaf fiber
content.