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Dynamic mechanical properties of poly( ε‐caprolactam)/polypropylene alloy
Author(s) -
Wippler C.
Publication year - 1993
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760330607
Subject(s) - materials science , polypropylene , extrusion , caprolactam , alloy , composite material , dynamic mechanical analysis , reactive extrusion , anisotropy , molding (decorative) , polymer , polymer chemistry , physics , quantum mechanics
The results of a round‐robin testing on the dynamic mechanical properties of a poly(ε‐caprolactam)/polypropylene PA‐6/PP compatibilized blend (an alloy) are reported. The alloy was a commercial product (Orgalloy R‐6000, from Atochem). The samples were prepared by extrusion, injection or compression molding. The greatest difficulty in comparing the data arose from the moisture content since the position of the PA‐6 transition peaks depend on the drying conditions. For the extruded specimens only minor effects could be attributed to the anisotropy introduced by the extrusion process. Overall, there was good agreement between the contributing laboratories for the frequency dependence of the transition peaks, but agreement between the measured values of the storage moduli was poor. This discrepancy is suspected to be partially due to the differences in sample geometry and in the processing conditions.