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Flame retardation of polypropylene: Effect of organoantimony compounds on the structural and mechanical properties
Author(s) -
Bajaj P.,
Jha N. K.,
Maurya P. L.,
Misra A. C.
Publication year - 1987
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/app.1987.070340502
Subject(s) - crystallinity , fire retardant , polypropylene , materials science , ultimate tensile strength , scanning electron microscope , crystallite , differential scanning calorimetry , composite material , crystallization , differential thermal analysis , chemical engineering , diffraction , metallurgy , physics , optics , engineering , thermodynamics
Structural properties of polypropylene (PP) filled with flame‐retardant (FR) organoantimony compounds, viz., triphenylstibinedibromide and triphenylantimony (V) derivatives of tribromotrichloro‐, and pentachlorophenols at 5–20 phr additive loading, were investigated through differential thermal analysis (DTA), and X‐ray diffraction (XRD) studies. Incorporation of flame retardant in PP has decreased the melting temperature ( T m ) and heat of fusion (Δ H f ) of PP. Crystallization peak and the onset temperature, crystallization rate and crystallite size are also influenced by the addition of these compounds. The percent crystallinity obtained by XRD is in good agreement with that obtained by DTA. The tensile properties of the flame‐retardant‐filled PP are also studied, and an attempt has been made to correlate the tensile properties with that of structural changes in polypropylene. Fracture mechanism of flame‐retardant‐filled PP has been investigated with the help of a scanning electron microscope.