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Preparation of hybrid graphene oxide/nano‐silica nanofillers and their application in poly(vinyl alcohol) composites
Author(s) -
Xu XianLing,
Wang XiongFei,
Li JiaLe,
Yang JingHui,
Wang Yong,
Zhou ZuoWan
Publication year - 2017
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23808
Subject(s) - materials science , vinyl alcohol , composite material , graphene , exfoliation joint , composite number , oxide , ultimate tensile strength , dispersion (optics) , hybrid material , nanoparticle , nanocomposite , polymer , glass transition , nanotechnology , physics , optics , metallurgy
We described the preparation of the hybrid graphene oxide (GO)/nano‐silica (SiO 2 ) nanofillers through the simple solution mixing method and their potential application in preparing poly(vinyl alcohol) (PVA) composites. SiO 2 nanoparticles were absorbed on the surface of GO sheets, which resulted in the exfoliation and dispersion of GO on one hand. On the other hand, well‐dispersed SiO 2 particles were also achieved. The hybrid GO@SiO 2 nanofillers modified PVA composite was prepared by dissolving the hybrid nanofillers into water followed by mixing with PVA. It was found that the hybrid GO@SiO 2 nanofillers exhibited much better dispersion in PVA matrix compared with neat SiO 2 and neat GO nanofillers. The hybrid GO@SiO 2 nanofillers exhibited good interaction with PVA matrix, which resulted in the apparent change of the glass transition of PVA matrix. With the addition of only 1 wt% GO@SiO 2 nanofillers, the PVA/GO@SiO 2 composite exhibited apparently enhanced tensile strength and fracture energy, which demonstrated the simultaneous strengthening and toughening effects of the hybrid GO@SiO 2 nanofillers. This work provided an alternative method to strengthen and toughen polymers simultaneously at very low content of hybrid nanofillers. POLYM. COMPOS., 38:E89–E97, 2017. © 2015 Society of Plastics Engineers