کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5185415 1381076 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-assembly behavior of hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane-capped poly(ɛ-caprolactone) in epoxy resin: Nanostructures and surface properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Self-assembly behavior of hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane-capped poly(ɛ-caprolactone) in epoxy resin: Nanostructures and surface properties
چکیده انگلیسی

The organic-inorganic amphiphile, hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane (POSS)-capped poly(ɛ-caprolactone) (POSS-capped PCL) was synthesized via the ring-opening reaction of ɛ-caprolactone, which was initiated by 3-hydroxypropylhepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane (POSS) with stannous (II) octanoate [Sn(Oct)2] as the catalyst. The organic-inorganic nanocomposites were prepared via the in situ polymerization of epoxy monomers in the presence of the POSS-capped PCL. The atomic force microscopy (AFM) shows that the organic-inorganic hybrids possess the nanostructures. In view of the miscibility of the sub-components of the organic-inorganic amphiphile [i.e., PCL chains and POSS cages] with epoxy after and before curing reaction, the formation of the nanostructures in the thermosets followed the mechanism of self-assembly. The surface properties of the organic-inorganic nanocomposites were investigated by means of static contact angle measurements and X-ray photoelectronic spectroscopy (XPS). It is demonstrated that the improvement in surface hydrophobicity was ascribed to the enrichment of the POSS cages on the surface of the materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 50, Issue 2, 16 January 2009, Pages 685-695
نویسندگان
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