20.500.12556/RUL-126692 Mechanisms of single-walled carbon nanotube network formation and its configuration in polymer-based nanocomposites The reinforcing and conductive performance of carbon nanotube polymer-based nanocomposites depends on the established network and its configuration. Within this study, we report on the underlying mechanisms of such network formation utilizing single-walled carbon nanotubes (SWCNTs) in low- and high-density polyethylene matrices. Mechanisms were theoretically evaluated through Doi-Edwards theory and experimentally confirmed through plasma etching coupled with electron microscopy as well as rheological flow tests. Results showed that the established network is constructed from SWCNT bundles, which geometrically entangle at a critical volume fraction [phi]v,crit (number of rods: [beta approximately equal to] 30). Below [phi]v,crit, the bundles behave as individual units and may align in the flow direction. Above [phi]v,crit, the rotation of bundles is constrained by neighboring units, leading to a random network configuration. Moreover, the theory successfully explains SWCNT bundle behavior as a Brownian entity and predicts network formation through diminishing thermo- and hydro-dynamically driven diffusion, which can be manipulated during the production to enhance reinforcing/conductive functionality of such materials. nanocomposites single-walled carbon nanotubes network formation molecular dynamics Doi-Edwards theory nanokompoziti eno-stenske ogljikove nano-cevke nastanek omrežja molekularna dinamika Doi-Edwards teorija true false true Angleški jezik Slovenski jezik Članek v reviji 2021-05-04 14:26:08 2021-05-04 14:26:10 2025-03-14 11:15:56 0000-00-00 00:00:00 2021 0 0 Str. 3334-3346 iss. 7 Vol. 54 Apr. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2021-03-04 0000-00-00 2021-04-13 2022-04-13 620.168(045) 0024-9297 10.1021/acs.macromol.0c02763 58206467 RAZ_Oseli_Alen_2021.pdf RAZ_Oseli_Alen_2021.pdf 1 24BB7B5B8F53F4A9C26CE864699825E6 bd2fc488c1448937087c10022a4435c4e787b8e8743017ecd7f417b5532d5fc1 7a8cbc02-acd4-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142752 https://pubs.acs.org/doi/10.1021/acs.macromol.0c02763# 1 e48b385f-acd3-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142751 Fakulteta za strojništvo 0 0 0