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Effects of γ-aminopropyltriethoxylsilane on morphological characteristics of hybrid nylon-66-based membranes before electron beam irradiation

Authors

  • C.P. Leo,

    1. School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan,14300 Nibong Tebal, S.P.S., Penang, Malaysia
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  • A. Linggawati,

    1. Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
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  • A. W. Mohammad,

    Corresponding author
    1. Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
    • Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
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  • Z. Ghazali

    1. Radiation Processing Division, Malaysian Institute for Nuclear Technology Research (MINT), 43000 Kajang, Selangor, Malaysia
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Abstract

Nylon-66 is a typical semicrystalline polymer that can be crosslinked using crosslinking agents and electron beam irradiation. Hybrid nylon-66-based membranes are more porous but denser compared to the pure nylon-66 membrane. Besides that, hybrid nylon-66 membranes exhibit higher water uptake and severe swelling in water. Si/nylon-66 membranes were prepared by adding γ-aminopropyltriethoxylsilane (APTEOS). Crosslinked silica in nylon-66 membranes is confirmed with high gel content and Fourier transform infrared peaks, but XRD results showed that there is a low crystalline degree in these membranes. The thermal stability of hybrid nylon-66 membranes is also less affected by APTEOS. The crosslinking agent only improves storage modulus in hybrid nylon-66 membranes. After irradiation, it is learned that APTEOS improves separation performance of nylon-66 membranes. However, excessive APTEOS causes the ratio of effective thickness over porosity (Δx/Ak) reduces significantly resulting a lower permeability membrane. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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