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|標題:||Crystalline forms in melt-crystallized syndiotactic polystyrene/clay nanocomposites||作者:||Wu, T.M.
|關鍵字:||layered silicate nanocomposites;axial correlation lengths;paracrystalline distortion;polymorphic behavior;h-1-nmr relaxation;polymer;intercalation;conformation;morphology;samples||Project:||Polymer Engineering and Science||期刊/報告no：:||Polymer Engineering and Science, Volume 42, Issue 12, Page(s) 2295-2305.||摘要:||
X-ray diffraction methods and polarized optical microscopy have been used to investigate the structural change of syndiotactic polystyrene/clay nanocomposites. The nanocomposite has prepared by mixing an sPS polymer solution with organically modified montmorillonite. Both X-ray diffraction and transmission electron microscopy results indicate that most of the swellable silicate layers are exfoliated and randomly dispersed into the sPS matrix. The X-ray diffraction data also show the presence of polymorphism in sPS/clay nanocomposites, which is strongly dependent on the thermal history of the nanocomposites from the melt and on the content of clay. In this study, the effect of premelting temperatures and crystallization temperatures of sPS and sPS/clay nanocomposites on their crystalline phases is discussed.
|Appears in Collections:||化學工程學系所|
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