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Mechanical properties and flammability of polycarbonate alloys containing nanosize additives
Author(s) -
Zhang Zhiyi,
Liu Yaqing,
Zhao Guizhe
Publication year - 2009
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.30503
Subject(s) - materials science , polycarbonate , composite material , composite number , flammability , ultimate tensile strength , methyl methacrylate , acrylate , nanocomposite , char , emulsion polymerization , silsesquioxane , polymer , polymerization , chemical engineering , pyrolysis , monomer , engineering
Different organic–inorganic composite particles [montmorillonite/poly(butyl acrylate) (PBA)/poly(methyl methacrylate) (PMMA), SiO 2 /PBA/PMMA, and CaCO 3 /PBA/PMMA] were synthesized by emulsion polymerization. Furthermore, polycarbonate (PC) alloys were prepared via the doping of these composite particles into PC with a twin‐screw extruder. The structure, mechanical properties, and flammability of the PC alloys were studied in detail. Although the tensile modulus of PC decreased a little, the flexibility and impact resistance were improved by the addition of these composite particles. This result was attributed to the fact that the composite particles were well dispersed in the PC matrix, with a cocontinuous phase formed between the particles and PC. In addition, the combustion behavior of the PC alloys, compared with that of the pure PC, resulted from a ceramic‐like char that formed on the surface of the PC alloys during burning. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009