2. Thermal analysis of the olive powders A and C shows that no significant
changes on the thermal degradation temperature occurred
which might means that the different mechanical processing of
olive pits applied for the preparation in a powder formdoes not affect
the thermal behavior. This is consistent with the processing temperatures
of biocomposites.
3. With filler loading, an increase in the tensilemodulus on the order of
18% and 16% for PLA/olive pit powders A and B was achieved at
wt.% = 20 and 13% for PLA/olive pit powder C at wt.% = 5.
4. A small decrease in tensile strength with filler volume fraction was
observed.
Milled olive pits can be used as reinforcements in PLA so that a full
bio-based composite is produced. The flexural strength reduction may
be due to the poor interfacial bonding between olive pit powder and
PLA. Froma general point of view this is the main disadvantage encountered
during the incorporation of natural lignocellulosic materials into
polymers. Therefore suggestions to achieve a better interfacial bonding
are reported in literature