Synthesis and properties of poly(3-n-dodecylthiophene) modified thermally expandable microspheres
2013 (English)In: European Polymer Journal, ISSN 0014-3057, E-ISSN 1873-1945, Vol. 49, no 6, 1503-1509 p.Article in journal (Refereed) Published
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 pm 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) (I 0 0) diffraction peak upon expansion. Grafting conjugated polymers to thermally expandable microspheres provides robust functional photo- and electro-active TEMs.
Place, publisher, year, edition, pages
2013. Vol. 49, no 6, 1503-1509 p.
Thermally expandable microspheres, Polythiophene, Conjugated polymers, Graft-copolymers
IdentifiersURN: urn:nbn:se:kth:diva-126897DOI: 10.1016/j.eurpolymj.2013.01.010ISI: 000321228200033ScopusID: 2-s2.0-84878744008OAI: oai:DiVA.org:kth-126897DiVA: diva2:642862
FunderSwedish Research Council
QC 201308232013-08-232013-08-222013-08-23Bibliographically approved