Viscoelasticity of Thermoplastic Polyurethane Silica Nanocomposites

Shanks, R 2010, 'Viscoelasticity of Thermoplastic Polyurethane Silica Nanocomposites', in Jun Tsai (ed.) Proceedings of the 7th Asian-Australian Conference on Composite Materials, Taipei, Taiwan, 15 - 18 November 2010, pp. 1-4.


Document type: Conference Paper
Collection: Conference Papers

Title Viscoelasticity of Thermoplastic Polyurethane Silica Nanocomposites
Author(s) Shanks, R
Year 2010
Conference name 7th Asian-Australian Conference on Composite Materials
Conference location Taipei, Taiwan
Conference dates 15 - 18 November 2010
Proceedings title Proceedings of the 7th Asian-Australian Conference on Composite Materials
Editor(s) Jun Tsai
Publisher Asian-Australasian Association for Composite Materials
Place of publication Taipei, Taiwan
Start page 1
End page 4
Total pages 4
Abstract Polyester and polyether urethane elastomers have been prepared as composites with fumed silica. Silicas of different particles size and titanium dioxide were used. The polyurethane elastomers were thermoplastic and consist of rubbery domains of a polyester or polyether supported by hard urethane domains. The fillers provide increased stiffness of the rubbery domains and reinforce the hard domains, which act as physical crosslinks. The composites were initially characterised using thermogravimetry and differential scanning calorimetry. Dynamic mechanical analysis was used to measure the properties with change in frequency and temperature. Activation energy for the elastomer phase glass transition was obtained from multiple frequency results and related to the interaction of polymer with filler. Creep recovery measurements showed that the filled polyurethanes provided improved elastomeric response.
Subjects Physical Chemistry of Materials
Keyword(s) Nanocomposite
thermomechanical
glass transition
thermoplastic elastomer
Copyright notice © 2010 Asian-Australasian Association for Composite Materials
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