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Mechanical properties of polyamide 6 reinforced microfibrilar composites
Author(s) -
Dencheva Nadya V.,
Oliveira Maria J.,
Pouzada Antonio S.,
Kearns Mark P.,
Denchev Zlatan Z.
Publication year - 2011
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.21056
Subject(s) - materials science , composite material , high density polyethylene , polyamide , ultimate tensile strength , flexural strength , flexural modulus , composite number , izod impact strength test , polyethylene , reinforcement , stiffness , modulus
The mechanical behavior of microfibrilar composites (MFC), consisting of a matrix of high‐density polyethylene (HDPE) and reinforcement of polyamide 6 (PA6) fibrils, with and without compatibilization, was studied. The composites were produced by conventional processing techniques with various shape and arrangement of the PA6 reinforcing entities: long, unidirectional, or crossed bundles of fibrils (UDP and CPC, respectively), middle‐length, randomly oriented bristles (MRB), or non‐oriented micrometric PA6 spheres (NOM). The tensile, flexural, and impact properties of the MFC materials (UDP, CPC, and MRB) were determined as a function of the PA6 reinforcement shape, alignment and content, and compared with those of NOM, the non‐fibrous composite. It was concluded that the in‐situ MFC materials based on HDPE/PA6 blends display improvements in the mechanical behavior when compared with the neat HDPE matrix, e.g., up to 33% for the Young modulus, up to 119% for the ultimate tensile strength, and up to 80% for the flexural stiffness. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers