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Yield behavior of PP/CaC0 3 and PP/Mg(OH) 2 composites. II: Enhanced interfacial adhesion
Author(s) -
Jančář J.,
Kučera J.
Publication year - 1990
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.760301204
Subject(s) - materials science , polypropylene , adhesion , composite material , yield (engineering) , composite number , ultimate tensile strength , magnesium , calcium carbonate , hydroxide , morphology (biology) , chemical engineering , metallurgy , engineering , biology , genetics
Abstract Effects of the variation of adhesion strength σ A on the tensile yield behavior of particulate filled polypropylene (PP) were investigated. To enhance adhesion of PP toward calcium carbonate (CaCO 3 ) and magnesium hydroxide (Mg(OH) 2 ), maleated PP (MPP) was added to PP in various ratios. σ A varied from 10‐46 MPa. σ A calculated from the Leidner‐Woodhams model are in good agreement with SEM micrographs of the composite fracture surfaces. Dependences σ yc vs. σ A , at constant V f = 0.18, were investigated and analyzed in terms of existing models. Using the Turczanyi, Pukanszky, Tüdös model (TPT) for the PP/CaCO 3 composite, an effective interlayer “thickness” ( t eff ) and the yield stress of the immobilized PP (σ yi ) were calculated. Both t eff and σ yi increased with enhancing of the adhesion.