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Influences of aminosilanization of halloysite nanotubes on the mechanical properties of polyamide‐6 nanocomposites
Author(s) -
Riza Erdogan Ali,
Kaygusuz Ilker,
Kaynak Cevdet
Publication year - 2014
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22787
Subject(s) - silanization , materials science , halloysite , composite material , silane , nanocomposite , polyamide , fourier transform infrared spectroscopy , scanning electron microscope , chemical engineering , engineering
The main purpose of this study was to explore effects of silanization of halloysite nanotubes (HNT) on the mechanical properties of polyamide 6 by using aminopropyltriethoxysilane. Effects of two silanization parameters; “initial silane concentration” and “pH of reaction solution” were also investigated. Nanocomposites were compounded via melt mixing method in a twin‐screw extruder, while specimens were shaped by injection molding. Formation of aminosilane molecules on the edges and defected surfaces of HNTs were revealed mainly by Fourier‐Transform infrared spectroscopy. Scanning electron microscopy and mechanical tests indicated that even the use of unmodified HNTs could be homogenously distributed in the matrix leading to increased mechanical properties as much as more than 30%. Aminosilanization of HNTs with optimum silanization parameters resulted in effective amounts of AlOSi bridging bonds between the matrix and reinforcement, making composite strengthening mechanisms more operative. In this condition, increases in the mechanical properties were as much as more than 50%. POLYM. COMPOS., 35:1350–1361, 2014. © 2013 Society of Plastics Engineers