Influences of aminosilanization of halloysite nanotubes on the mechanical properties of polyamide-6 nanocomposites

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 investig...

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Bibliographic Details
Published in:Polymer composites 2014-07, Vol.35 (7), p.1350-1361
Main Authors: Riza Erdogan, Ali, Kaygusuz, Ilker, Kaynak, Cevdet
Format: Article
Language:English
Subjects:
Applied sciences
Bridging
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Injection molding
Mechanical properties
Melts
Nanocomposites
Nanotubes
Polyamide resins
Polymer industry, paints, wood
Reinforcement
Technology of polymers
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Summary: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 AlOSi 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
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.22787