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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

 
: Zierdt, P.; Kulkarni, G.; Theumer, T.

:

Macromolecular symposia 373 (2017), No.1, Art.1600118, 8 pp.
ISSN: 0258-0322
ISSN: 1022-1360
English
Journal Article
Fraunhofer IMWS ()

Abstract
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.

: http://publica.fraunhofer.de/documents/N-455822.html