کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1696374 | 1011897 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Organovermiculite nanofillers in polypropylene Organovermiculite nanofillers in polypropylene](/preview/png/1696374.png)
Vermiculite (VER) was exfoliated to be used as organovermiculite nanofiller (ODA/VER) for polypropylene (PP)/VER nanocomposites. We used three procedures. P1: low-temperature intercalation of melted octadecylamine (ODA) led to the regular bilayer arrangement of organic molecules in the interlayer space. P2: mechanical exfoliation of ODA/VER by jet milling decreased the crystallite size. P3: chemical exfoliation using an oxidizing agent potassium persulfate and subsequent intercalation with ODA created a mixture of monolayer and bilayer arrangements of organic cations in the interlayer. The thermal compounding of the organovermiculites (4 wt.%) with maleated PP at 30 and 50 rpm caused the partial deintercalation of the organovermiculite and organovermiculite pretreated with the oxidizing agent. The jet milled ODA/VER was very well dispersed within PP matrix. Thermal stability of PP and PP/VER nanocomposites with differently exfoliated ODA/VER nanofillers was evaluated by thermogravimetric analysis.
Journal: Applied Clay Science - Volume 43, Issue 1, January 2009, Pages 108–112