Abstract
A detailed birefringence analysis of the effect of strong dc electric fields on the order–disorder transition temperature (TODT) of lamella forming block copolymers is reported. The setup presented here enabled the measurement of the TODT with high temperature resolution while the birefringence measurements were nondestructive and straightforward compared to alternative methods. A downward shift in the transition temperature was found for all samples upon application of the electric field. The data indicate that the dominating parameter that evokes the mixing of block copolymers when exposed to electric fields is the difference in dielectric permittivity Δϵ between the block copolymer constituents. The extent to which the TODT is shifted is furthermore influenced by the degree of polymerization N. Shifts in the transition temperature of up to 7 °C were found upon application of an electric field of 5 kV/mm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
