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Environmental stress cracking ( ESC ) resistance of polycarbonate/ S i O 2 nanocomposites in different media
Author(s) -
Nomai Jiraporn,
Schlarb Alois K.
Publication year - 2017
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.45451
Subject(s) - materials science , polycarbonate , environmental stress cracking , ultimate tensile strength , nanocomposite , composite material , cracking , stress corrosion cracking , corrosion
Polycarbonate (PC) nanocomposites containing different nano‐SiO 2 contents were prepared using a twin‐screw extruder followed by injection molding. The mechanical behavior and environmental stress cracking (ESC) resistance of the nanocomposites were investigated. Compared to neat PC, the incorporation of nanofiller leads to a slight improvement in Young's modulus, tensile strength, and notched impact strength properties. Interestingly, the nanofiller enhanced the environmental stress cracking resistance of PC in different fluids (isopropanol, methanol, aqueous urea solution, and deionized water) vastly. The correlation of the mode I critical stress intensity factor with the Hansen solubility parameter shows a very good agreement for different fluids and thus allows the prediction of the stress cracking behavior as a function of the filler content for different stress‐cracking agents. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45451.