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The study of using of nanofillers in polyolefinic matrix - DSpace UTB

The study of using of nanofillers in polyolefinic matrix - DSpace UTB

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Tomas Bata University <strong>in</strong> Zlín, Faculty <strong>of</strong> Technology<br />

<strong>The</strong> Japanese scientists prepared nanocomposites <strong>in</strong> two steps as first. <strong>The</strong> first step is based<br />

on compound<strong>in</strong>g <strong>of</strong> maleated polypropylene and clay m<strong>in</strong>eral. This step is necessary for better<br />

compatibility between polymer <strong>matrix</strong> and nan<strong>of</strong>iller. <strong>The</strong> second step is the compound<strong>in</strong>g <strong>of</strong><br />

polymer <strong>matrix</strong> and blend.<br />

<strong>The</strong> suitable compound<strong>in</strong>g device is very important for preparation. Better distribution and<br />

dispergation were reached when the nanocomposites were prepared by two screw extruder or<br />

kneader. [49]<br />

<strong>The</strong> conditions <strong>of</strong> preparation can <strong>in</strong>fluence f<strong>in</strong>al properties <strong>of</strong> nanocomposites too. <strong>The</strong><br />

temperature <strong>of</strong> process<strong>in</strong>g must be higher than melt<strong>in</strong>g temperature; however, there is the<br />

possibility <strong>of</strong> degradation <strong>of</strong> polymeric materials or nan<strong>of</strong>iller modifier. This is the reason<br />

why the preparation <strong>of</strong> blend or nanocomposite is very complicated. Time <strong>of</strong> compound<strong>in</strong>g<br />

and speed <strong>of</strong> rotation <strong>of</strong> kneaders can <strong>in</strong>fluence f<strong>in</strong>al properties <strong>of</strong> nanocomposites too. [41]<br />

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