Feasibility of Reprocessing Natural Fiber Filled Poly(lactic acid) Composites: An In-Depth Investigation

Table 4

Relative difference in means of properties of WF/PLA composites between cycle 0 and cycle 6.

Properties	WF 30 PLA composite (%)	WF 50 PLA composite (%)
Tensile strength (MPa)	−47.34	−41.86
Tensile modulus (MPa)	−9.30	−53.96
Failure strain (%)	−71.22	29.20
Flexural strength (MPa)	−70.53	−70.12
Flexural modulus (MPa)	−28.37	−5.99
Impact resistance (J/m)	−72.18	−40.10
Heat deflection temperature (°C)	−3.43	−2.58
Storage modulus (MPa)	−10.68	−14.03
Coefficient of thermal expansion (mm/mm/°C)	175.94	−40.93
Melt flow index (g/10 min)	640.37	1364.60

Negative sign shows a decrease and a positive one shows an increase in the value of the property.