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Mechanical and Thermo‐Mechanical Properties of Discontinuously and Continuously Processed Biogenic Wood‐Plastic Composites from Polyamide 11 and Chemically Modified Beech Particles
Author(s) -
Zierdt Patrick,
Kulkarni Gaurav,
Theumer Torsten
Publication year - 2017
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201600118
Subject(s) - materials science , composite material , molding (decorative) , plastics extrusion , polyamide , ultimate tensile strength , wood plastic composite , dynamic mechanical analysis , glass transition , injection moulding , wood flour , polymer , composite number
Summary The resulting mechanical and thermo‐mechanical properties of discontinuously and continuously processed biogenic wood‐plastic composites (bio‐WPC) from polyamide 11 and chemically modified beech particles are investigated. It is found that continuous processing with a twin‐screw extruder (TSE) and subsequent industrial scale injection molding leads to a lower elastic modulus, an equal tensile strength, a higher strain at break and a lower glass transition temperature as compared to discontinuous processing with an internal mixer (IM) and subsequent laboratory scale injection molding. This is attributed to a more distinctive beech particle size reduction and shear stress induced chain scission during TSE processing and subsequent injection molding.