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Microstructure, thermal stability, and mechanical properties of modified polycarbonate with polyolefin and silica nanoparticles
Author(s) -
Taraghi Iman,
Fereidoon Abdolhossein,
Paszkiewicz Sandra,
Szymczyk Anna,
Chylinska Renata,
Kochmanska Agnieszka,
Roslaniec Zbigniew
Publication year - 2017
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4064
Subject(s) - materials science , polycarbonate , composite material , izod impact strength test , dynamic mechanical analysis , thermal stability , fourier transform infrared spectroscopy , elastomer , nanocomposite , glass transition , polyolefin , microstructure , polymer , chemical engineering , ultimate tensile strength , layer (electronics) , engineering
In this manuscript, the supramolecular structure and dynamic mechanical thermal behavior of the polycarbonate (PC)/ethylene propylene copolymer (EPC)/silica (SiO 2 ) nanocomposites (NCs) have been studied. The morphological analysis of the fractured Izod impact surfaces revealed the mechanism of energy absorption for the elastomeric particle in front of the crack growth. The cracks growth and deformation of voids around the EPC phase are the main factors for energy absorption during the notched‐Izod impact test. The presence of the SiO 2 nanoparticles (NPs) in the PC phase causes the increase in the values of the impact strength for the NCs specimens. No new peaks and bonds were observed in the Fourier transform infrared (FTIR) spectra, and consequently, the phase behavior of the PC/EPC blends did not change significantly upon SiO 2 addition. The dynamic mechanical thermal analysis result confirms the existence of two glass transitions temperatures and independence of all components in the system. Examination of the interfacial studies revealed that the SiO 2 NPs do not exist at the interface of PC and EPC. In addition, applying SiO 2 NPs into the blends improved the storage modulus ( E ′) and thermal stability of the PC/EPC/SiO 2 NCs. Copyright © 2017 John Wiley & Sons, Ltd.