Morphology and properties of thermoplastic polyurethane composites incorporating hydrophobic layered silicates

Finnigan, Bradley, Martin, Darren, Halley, Peter, Truss, Rowan and Campbell, Kayleen (2005) Morphology and properties of thermoplastic polyurethane composites incorporating hydrophobic layered silicates. Journal Of Applied Polymer Science, 97 1: 300-309. doi:10.1002/app.21718


Author Finnigan, Bradley
Martin, Darren
Halley, Peter
Truss, Rowan
Campbell, Kayleen
Title Morphology and properties of thermoplastic polyurethane composites incorporating hydrophobic layered silicates
Journal name Journal Of Applied Polymer Science   Check publisher's open access policy
ISSN 0021-8995
Publication date 2005
Sub-type Article (original research)
DOI 10.1002/app.21718
Volume 97
Issue 1
Start page 300
End page 309
Total pages 10
Editor Anne Hiltner
Eric Baer
Place of publication Hoboken, N.J. USA
Publisher John Wiley & Sons
Collection year 2005
Language eng
Subject C1
290600 Chemical Engineering
670705 Plastic products (incl. construction materials)
0904 Chemical Engineering
Formatted abstract
Polyurethane (PU) composites incorporating Cloisite 15A (15A) were prepared via melt compounding and solvent casting. The melt-compounded composites had better dispersion and a smaller silicate stack size as a result of the higher shear forces associated with twin-screw extrusion. The PU microphase separation and hard domain order were greater in the melt-processed materials. At the concentrations of 15A employed in this study (≤7 wt %), the filler did not have an observable effect on the microphase texture of either the solvent- or melt-processed PU. The tensile properties of the melt-compounded materials were lower than those of their solvent-cast counterparts because of thermal degradation. The solvent-cast composite containing a 3 wt % loading of 15A displayed improved tensile strength and elongation, primarily because of plasticization by the silicate organic treatment. The addition of layered silicates with high aspect ratios increased the hysteresis and permanent set of this PU elastomer. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 300-309, 2005.
Keyword Polymer Science
Nanocomposites
Polyurethanes
Processing
Saxs
Structure-property Relations
Polymer Melt Intercalation
Soft Segment Length
Thermal-degradation
Block Copolymers
6/clay Nanocomposites
6/clay Nanocomposites
Mechanical-properties
Processing Conditions
Glass-transition
Saxs-dsc
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 06:13:09 EST