Microphase separation assisted reduction in the percolation threshold of MWCNT/block polymer composites. Topcu, G., Reinoso Arenas, D., McNally, T., & Becer, C. R. SOFT MATTER, 19(6):1109–1114, February, 2023. doi abstract bibtex Block copolymers continue to attract a great deal of interest since they allow the formation of microphase-separated domains, useful for nanopatterning/templating. Herein, we present the drastic effect of microphase separation of a diblock copolymer on the electrical properties of polymer nanocomposites. Microphase-separated poly(styrene-b-2-ethylhexyl acrylate) (P(St-b-EHA)) block copolymers having different block lengths were synthesized and utilized as templates for multi-walled carbon nanotubes (MWCNTs). The percolation threshold of the films decreased from 0.46 to 0.19 vol% with decreasing styrene phase fraction. More importantly, we observed a non-linear and unique reduction in percolation threshold with transforming the phase into lamellar structures.
@article{topcu_microphase_2023,
title = {Microphase separation assisted reduction in the percolation threshold of {MWCNT}/block polymer composites},
volume = {19},
issn = {1744-683X},
doi = {10.1039/d2sm01277d},
abstract = {Block copolymers continue to attract a great deal of interest since they allow the formation of microphase-separated domains, useful for nanopatterning/templating. Herein, we present the drastic effect of microphase separation of a diblock copolymer on the electrical properties of polymer nanocomposites. Microphase-separated poly(styrene-b-2-ethylhexyl acrylate) (P(St-b-EHA)) block copolymers having different block lengths were synthesized and utilized as templates for multi-walled carbon nanotubes (MWCNTs). The percolation threshold of the films decreased from 0.46 to 0.19 vol\% with decreasing styrene phase fraction. More importantly, we observed a non-linear and unique reduction in percolation threshold with transforming the phase into lamellar structures.},
number = {6},
urldate = {2023-02-12},
journal = {SOFT MATTER},
author = {Topcu, Gokhan and Reinoso Arenas, David and McNally, Tony and Becer, C. Remzi},
month = feb,
year = {2023},
pages = {1109--1114},
}
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