Contact
    Start Publications Property enhancement in polypropylene ternary blend ...
    ←  Publication Finder
    Attension

    Property enhancement in polypropylene ternary blend nanocomposites via a novel poly(ethylene oxide)-grafted polystyrene-block-poly(ethylene/butylene)-block-polystyrene toughener-compatibilizer system

    Year: 2018

    Journal: Polym. Int., Volume 67, OCT, page 1445–1455

    Authors: Tekay, Emre; Baskir, Serap; Nugay, Nihan; Nugay, Turgut; Ortac, Bulend; Sen, Sinan

    Organizations: Scientific Research Projects Coordination Departments of Yalova University [2017/DR/0003]

    Keywords: polypropylene nanocomposites; mechanical properties; elastomeric compatibilizer; silica nanotube; creep; wettability

    Synthesis and characterization of a novel toughener-compatibilizer for polypropylene (PP)-montmorillonite (MMT) nanocomposites were conducted to provide enhanced mechanical and thermal properties. Poly(ethylene oxide) (PEO) blocks were synthetically grafted onto maleic anhydride-grafted polystyrene-block-poly(ethylene/butylene)-block-polystyrene (SEBS-g-MA). Special attention was paid to emphasize the effect of PEO-grafted SEBS (SEBS-g-PEO) against SEBS-g-MA on morphology, static/dynamic mechanical properties and surface hydrophilicity of the resultant blends and nanocomposites. It was found that the silicate layers of neat MMT are well separated by PEO chains chemically bonded to nonpolar SEBS polymer without needing any organophilic modification of the clay as confirmed by X-ray diffraction and transmission electron microscopy analyses. From scanning electron microscopy analyses, elastomeric domains interacting with MMT layers via PEO sites were found to be distributed in the PP matrix with higher number and smaller sizes than the corresponding blend. As a benefit of PEO grafting, SEBS-g-PEO-containing nanocomposite exhibited not only higher toughness/impact strength but also increased creep recovery, as compared to corresponding SEBS-g-MA-containing nanocomposite and neat PP. The damping parameter of the same nanocomposite was also found to be high in a broad range of temperatures as another advantage of the SEBS-g-PEO toughener-compatibilizer. The water contact angles of the blends and nanocomposites were found to be lower than that of neat hydrophobic PP which is desirable for finishing processes such as dyeing and coating. (c) 2018 Society of Chemical Industry
    View publication