Synthesis and properties of poly(3-n-dodecylthiophene) modified thermally expandable microspheres

Vamvounis, George, Jonsson, Magnus, Malmström, Eva and Hult, Anders (2013) Synthesis and properties of poly(3-n-dodecylthiophene) modified thermally expandable microspheres. European Polymer Journal, 49 6: 1503-1509. doi:10.1016/j.eurpolymj.2013.01.010


Author Vamvounis, George
Jonsson, Magnus
Malmström, Eva
Hult, Anders
Title Synthesis and properties of poly(3-n-dodecylthiophene) modified thermally expandable microspheres
Formatted title
Synthesis and properties of poly(3-n-dodecylthiophene) modified thermally expandable microspheres
Journal name European Polymer Journal   Check publisher's open access policy
ISSN 0014-3057
1873-1945
Publication date 2013-06
Sub-type Article (original research)
DOI 10.1016/j.eurpolymj.2013.01.010
Volume 49
Issue 6
Start page 1503
End page 1509
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2014
Language eng
Formatted abstract
Functionalization of thermally expandable microspheres (TEMs) with a conjugated polymer is explored. These functionalized thermally expandable microspheres were prepared by grafting 3-n-dodecylthiophene via oxidative polymerization from a thiophene modified TEM. The thiophene modified TEM to 3-n-dodecylthiophene ratio was varied during grafting and the resulting poly(3-n-dodecylthiophene) grafted TEM were characterized by FT-IR spectroscopy, Thermal Gravimetric Analysis, Scanning Electron Microscopy, Thermo-Mechanical Analysis and X-ray diffraction. The particles were approximately 30 μm in diameter and upon heating, the functionalized microspheres expanded up to 50 times. This expansion property was related to the poly(3-n-dodecylthiophene) content, where the increase in poly(3-n-dodecylthiophene) on microsphere decreased the thermal expansion. The X-ray diffraction shows a sharpening of the poly(3-n-dodecylthiophene) (1 0 0) diffraction peak upon expansion. Grafting conjugated polymers to thermally expandable microspheres provides robust functional photo- and electro-active TEMs.

Highlights ► Functionalization of thermally expandable microspheres with a polythiophene was performed. ► The particles were ~30 μm and upon heating, the functionalized microspheres expanded up to 50 times. ► The increase in polythiophene content on microsphere decreased the thermal expansion property. ► An increase in the crystallinity of the poly(3-n-dodecylthiophene) was observed with expansion.
Keyword Thermally expandable microspheres
Polythiophene
Conjugated polymers
Graft-copolymers
Particles
Polymer
Q-Index Code C1
Q-Index Status Confirmed Code
Funding Body ARC
Grant ID DP1095404
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Fri, 12 Jul 2013, 11:06:12 EST by George Vamvounis on behalf of School of Chemistry & Molecular Biosciences