Nastanek omrežja ogljikovih nanocevk v polietilenu ter njegov vpliv na fizikalne lastnosti nanokompozitov : doktorsko delo

slovenian

doktorska dela

2021

carbon nanotubes   dissertations   mechanisms of network formation   network morphology   physical properties   polymer nanocomposites

Univerza v Ljubljani, Fakulteta za strojništvo
(Obvezni izvod spletne publikacije)

Due to their inherent properties, carbon nanotubes (CNT) present a superior functional filler (mechanical reinforcement, electrical conductivity, etc.) in so-called polymer nanocomposites. The results of the PhD thesis showed that during precessing, CNT disentangle in the form of bundles (secondary agglomerates), which can be considered as Brownian (thermally and hydrodynamically driven) rod-like particles. At critical volume fraction (fi) v,crit ((beta)(approximately symbol) 30), those rods establish randomly connected network in the polymeric material (following a reptation theory of rod-like systems). The established network changes the morphological picture, which is mainly connected to the skeletal molecular structure of matrix material and directly affects the mechanical behavior of CNT nanocomposites (mechanical reinforcement, time-dependence, an/isotropy, etc.).

15.05.2023