Improved thermal stability of pyroelectric polymers by crosslinking of ferroelectric liquid crystals
2001 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 105, no 42, 10223-10227 p.Article in journal (Refereed) Published
Monofunctional ferroelectric liquid crystalline monomers and a blend of monofunctional/bifunctional ferroelectric liquid crystalline monomers were photopolymerized, yielding a side-chain liquid crystalline polymer and a cross-linked polymer, respectively. The cross-linked polymer exhibited higher thermal stability than the side-chain liquid crystalline polymer and was pyroelectric up to 170 °C, whereas the side-chain liquid crystalline polymer lost most of its pyroelectricity at 38 °C. It is shown by electrooptic and birefringence measurements that cross-linking in the unwound SmC* phase prevented the reoccurrence of the helical superstructure.
Place, publisher, year, edition, pages
2001. Vol. 105, no 42, 10223-10227 p.
IdentifiersURN: urn:nbn:se:liu:diva-49084DOI: 10.1021/jp0108972OAI: oai:DiVA.org:liu-49084DiVA: diva2:269980