Polystyrenes with macro-intercalated organoclay. Part I. Compounding and characterization
Nanocomposites of polystyrene (PS) were prepared using a melt compounding or co-solvent method. Two commercial PS were used, and two organoclays—one prepared in this laboratory (COPS), and the other commercial Cloisite ® 10A (C10A). The COPS is a product of clay intercalation with a copolymer of sty...
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Veröffentlicht in: | Polymer (Guilford) 2005-11, Vol.46 (25), p.11557-11568 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Nanocomposites of polystyrene (PS) were prepared using a melt compounding or co-solvent method. Two commercial PS were used, and two organoclays—one prepared in this laboratory (COPS), and the other commercial Cloisite
® 10A (C10A). The COPS is a product of clay intercalation with a copolymer of styrene and vinyl benzyl tri-methyl ammonium chloride. According to the XRD diffraction data, the clay platelets in COPS and its PNC with PS were relatively well dispersed, i.e. with the interlayer spacings of
d
001=7–8
nm. By contrast,
d
001 in PNC prepared with C10A was only 4
nm. However, the number of clay platelets per stack in PS/COPS was found to be significantly larger than that in PS/C10A, viz.
m=3–12, compared to
m=2–6. The scanning and transmission electron microscopy indicated that in the PS matrix COPS existed in form of large, immiscible domains. |
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ISSN: | 0032-3861 1873-2291 |
DOI: | 10.1016/j.polymer.2005.10.014 |