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Acid‐base interactions on interfacial adhesion and mechanical responses for glass‐fiber‐reinforced low‐density polyethylene
Author(s) -
Pak S. H.,
Caze C.
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970705)65:1<143::aid-app18>3.0.co;2-4
Subject(s) - materials science , interphase , low density polyethylene , adhesion , composite material , polyethylene , polymer , fiber , glass fiber , matrix (chemical analysis) , genetics , biology
The relationship between interfacial adhesion and mechanical response in discontinuous glass‐fiber‐reinforced thermoplastics (GFTP) was investigated using low‐density polyethylene (LDPE) as a matrix. It was found that the presence of acid groups in the matrix enhances the mechanical strength as well as the interfacial adhesion, to a great extent, especially with the glass fibers (GF) treated with basic coupling agents. However, some degradation in mechanical properties of the GFTP resulted when excessive interfacial adhesion was achieved with large amounts of the acid groups. The results of diverse characterization suggest the existence of an interphase of bound polymers at the GF surface, whose physical entanglement with the matrix plays a critical role in the mechanical response of the GFTP. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 143–154, 1997