Stress-strain properties of composites based on bio-based polyamide 1010 filled with cut fibers

In recent decades short fiber reinforced composites have found a widespread application in automotive industry, where the use of petrochemical plastics is more common. The recent development of bio-based plastics offers the opportunity to replace petroleum-based plastics. Owing to this statement, the ability of reinforcing bio-based polyamide 10.10 (PA 1010) by short fibers has been investigated. Traditional fillers, like glass and carbon fibers, have been generally used to achieve high mechanical properties for lightweight structures. A possible combination with man-made cellulose fibers can be an alternative to increase bio-based content in the composite and to save appropriate mechanical properties. Twin screw extrusion and injection molding have been performed to produce granules and test specimens, respectively. Characterization of mechanical properties, such as impact strength, tensile strength and tensile elongation, has been provided. Fiber breakage in glass fiber reinforced composites during the twin screw extrusion process is estimated.