Title: MECHANICAL CHARACTERISATION OF POLYURETHANE/CLAY NANOCOMPOSITES
Page Range: p.647-652
Author(s): Rihayat T; Saari M; Mahmood M H; Yunus W M Z W; Suraya A R; Dahlan K Z H M; Sapuan S M
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 15
Issue No: No.8
Abstract
Polyurethane/clay nanocomposites were synthesised from renewable sources. A polyether polyol, prepared from palm oil-based oleic acid and glycerol, was used to produce a polyurethane by treatment with an isocyanate with dodecylbenzenesulphonic acid as a catalyst and emulsifier. An unmodified clay (kunipia-F) was treated with cetyltrimethylammonium bromide (CTAB-mont) or octadodecylamine (ODA-mont). The d-spacings in CTAB-mont and ODA-mont were 1.571 and 1.798 nm, respectively. The organoclays were intercalated in the polyurethane, as confirmed by a wide angle x-ray diffraction studies. Addition of 1-5 wt% of organoclay produced the most significant improvements in tensile properties and glass transition temperature. 19 refs.
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