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Preparation of well‐dispersed reduced graphene oxide and its mechanical reinforcement in polyvinyl alcohol fibre
Author(s) -
Li Yajun,
Sun Jun,
Wang Jianjun,
Qin Chuanxiang,
Dai Lixing
Publication year - 2016
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5151
Subject(s) - polyvinyl alcohol , graphene , materials science , composite number , oxide , vinyl alcohol , dispersant , composite material , ultimate tensile strength , dynamic mechanical analysis , dispersion (optics) , chemical engineering , polymer , nanotechnology , physics , engineering , optics , metallurgy
The current work reports the preparation and characterization of polyvinyl alcohol ( PVA ) composite fibres reinforced with graphene reduced from graphene oxide ( GO ) by using oligomeric proanthocyanidin ( OPC ) as a reductant. After reduction, most of the oxygen‐containing groups were removed from the GO and reduced graphene oxide ( rGO ) was prepared. As a result of combined OPC as a dispersant, rGO could be well dispersed in a dimethyl sulfoxide/ H 2 O mixed solvent and in PVA matrix, and the PVA / rGO dispersion was wet spun followed by hot drawing to prepare continuous PVA / rGO composite fibres. The PVA / rGO composite fibres exhibited a significant enhancement of mechanical properties at low rGO loadings; in particular the tensile strength and Young's modulus of the 2.0 wt% rGO and PVA composite fibre increased to 244% and 294% respectively relative to neat PVA fibre. Moreover, the storage modulus (−10 °C) and T g increased to 300% and 7.2 °C, respectively. © 2016 Society of Chemical Industry