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). pp. 1503-1509.

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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.

Item ID: 31989
Item Type: Article (Research - C1)
ISSN: 1873-1945
Keywords: thermally expandable microspheres; polythiophene; conjugated polymers; graft-copolymers
Funders: Australian Research Council (ARC)
Projects and Grants: ARC DP1095404
Date Deposited: 17 Mar 2014 06:05
FoR Codes: 03 CHEMICAL SCIENCES > 0303 Macromolecular and Materials Chemistry > 030306 Synthesis of Materials @ 50%
03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis @ 50%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy @ 100%
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