Nano-mesh superstructure in single-walled carbon nanotube/polyethylene nanocomposites, and its impact on rheological, thermal and mechanical properties

Oseli, Alen (avtor), Vesel, Alenka (avtor), Mozetič, Miran (avtor), Žagar, Ema (avtor), Huskić, Miroslav (avtor), Slemenik Perše, Lidija (avtor)

The mesh formation of single-walled carbon nanotube (SWCNT) superstructure, i.e. nano-mesh, in low- and high-density polyethylene (LDPE and HDPE) matrices was observed by using plasma etching technique and SEM analysis. Nano-mesh was established by two mechanisms: i) alignment of SWCNT bundles (forming network backbone) and ii) shish-kebab induced crystallization (forming network net). The network was formed at low SWCNT content due to the high aspect ratio of nano-filler, which additionally contributed to alignment. Established nano-mesh superstructure caused confinement effect disrupting crystallization and melting kinetics, which directly affected mechanical properties. Although mechanical properties of LDPE and HDPE nanocomposites profoundly improved, i.e. Young's modulus increased for 230% and 30%, respectively, at only 1 wt% of SWCNTs, HDPE nanocomposites showed visible confinement that reduced effective reinforcement. It seems that HDPE nanocomposites cannot achieve full reinforcing potential since confinement effect restricts the crystal growth, which gradually reduces effective reinforcement in semi-dilute regime.

• Jezik: Angleški jezik
• Ključne besede: nanocomposites, nano-structures, physical properties, physical methods of analysis
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 10 str.
• Številčenje: Vol. 136, art. 105972
• PID: 20.500.12556/RUL-116530
• UDK: 620.3(045)
• ISSN pri članku: 1359-835X
• DOI: 10.1016/j.compositesa.2020.105972
• COBISS.SI-ID: 17053187
• Datum objave v RUL: 27.05.2020

Gradivo je del revije

• Naslov: Composites. Part A, Applied science and manufacturing
• Skrajšan naslov: Comp., Part A, Appl. sci. manuf.
• Založnik: Elsevier
• ISSN: 1359-835X
• COBISS.SI-ID: 39162881

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nanokompoziti, nano-strukture, fizikalne lastnosti, metode fizikalnih analiz