Study of thermal stability of (3-aminopropyl)trimethoxy silane-grafted titanate nanotubes for application as nanofillers in polymers (CROSBI ID 207834)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Plodinec, Milivoj ; Gajović, Andreja ; Iveković, Damir ; Tomašić, Nenad ; Zimmerman, Boris ; Macan, Jelena ; Haramina, Tatjana ; Su, DangSeng ; Willinger, Marc
engleski
Study of thermal stability of (3-aminopropyl)trimethoxy silane-grafted titanate nanotubes for application as nanofillers in polymers
Protonated titanate nanotubes (TiNT-H) were surface-modified with (3-aminopropyl)trimethoxy silane (APTMS) by novel method suitable for syntheses of large amounts of materials with low costs. Usage of prepared nanotubes for polymer reinforcement was studied. Since the thermal stability of nanofiller was important to preserve their functional properties, stability was studied by in situ high temperature measurements. The most temperature stable sample, 20 min silanized nanotubes, were used for preparation of epoxy- based nanocomposites. This nanofiller form smaller (few hundreds of nm) and larger (few μm) aggregates in polymer, where the amount of aggregates increase with addition of nanofillers. All the APTMS modified titanate nanotubes in agregates were bond well with the epoxy matrix since amine groups on the TiNTs surface can react with epoxy group to form covalent bonds between the matrix and the nanofiller. Very small addition (0.19 – 1.52 wt%) of nanotubes significantly increased the glass transition temperature and the modulus in rubbery state of the epoxy based polymer. A smaller amount of added nanofiller provide larger increase in these parameters and therefore better dynamic mechanical properties due to the smaller amount of large aggregates. In this work APTMS modified tianate nanotubes were proved as promising nanofiller in epoxy based nanocomposits.
titanate nanotubes surface modified by (3-aminopropyl)trimethoxy silane ; thermal stability ; epoxy-based nanocomposites
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Podaci o izdanju
25 (43)
2014.
435601
13
objavljeno
0957-4484
1361-6528
10.1088/0957-4484/25/43/435601
Povezanost rada
Fizika, Kemija, Kemijsko inženjerstvo