Effect of aspect ratio of graphene oxide on properties of poly (vinyl alcohol) nanocomposites

Autor:	Seira Morimune-Moriya, Takuya Goto, Takashi Nishino
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	graphene oxide poly (vinyl alcohol) aspect ratio mechanical properties thermal properties barrier properties reinforcement effect Materials of engineering and construction. Mechanics of materials TA401-492 Polymers and polymer manufacture TP1080-1185
Zdroj:	Nanocomposites, Vol 5, Iss 3, Pp 84-93 (2019)
Druh dokumentu:	article
ISSN:	2055-0332 20550324
DOI:	10.1080/20550324.2019.1647688
Popis:	In this study, the effect of aspect ratio of graphene oxide (GO) on the properties of poly (vinyl alcohol) (PVA) nanocomposites were investigated. The PVA/GO nanocomposites were prepared by a simple solution casting method. GO with 3 different lateral sizes, 0.5, 1.5 and 3 µm were used. The higher the aspect ratio, the higher the Young’s modulus obtained. The effect of aspect ratio on Young’s modulus was in agreement with the Halpin-Tsai model, especially when GO was highly aligned in uniaxially drawn nanocomposites. Similar to the Young’s modulus, the barrier properties increased with increasing GO aspect ratio. On the other hand, the highest glass transition temperature as well as the highest thermal decomposition temperature was achieved for the GO of the lowest aspect ratio.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/8c5b42134ca74a2d9652aebb02a0130f Zobrazit plný text záznamu View record in DOAJ