Thermoplastic starch (TPS)/luffa fiber composites were prepared using compression molding. The luffa
fiber contents ranged from 0 wt.% to 20 wt.%. The tensile strength of the TPS/luffa fiber composite with
10 wt.% of luffa fiber had a twofold increase compared to TPS. The temperature values of maximum
weight loss of the TPS/luffa fiber composites were higher than for TPS. The water absorption of the
TPS/luffa fiber composites decreased significantly when the luffa fiber contents increased. The strength
of adhesion between the luffa fiber and the TPS matrix was clearly demonstrated by their compatibility
presumably due to their similar chemical structures as shown by scanning electron microscope (SEM)
micrographs and Fourier transform infrared (FTIR) spectra.