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Effect of reduced graphene oxide functionalization by sulfanilic acid on the mechanical properties of poly(styrene‐ co ‐acrylonitrile)/reduced graphene oxide composites
Author(s) -
Vu Thi Diem Tuyet,
Pham Viet Hung,
Hur Seung Hyun,
Chung Jin Suk
Publication year - 2016
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.23153
Subject(s) - graphene , materials science , acrylonitrile , oxide , surface modification , sulfanilic acid , composite material , copolymer , polymer chemistry , polymer , dispersant , styrene , dynamic mechanical analysis , polyacrylonitrile , chemical engineering , organic chemistry , chemistry , dispersion (optics) , nanotechnology , engineering , metallurgy , physics , optics
The sulfonation of reduced graphene oxide (SRGO) by the aryl diazonium salt of sulfanilic acid was focused to examine the enhancement effect on the mechanical properties of poly styrene‐acrylonitrile (SAN). The SAN was prepared by surfactant‐free emulsion copolymerization using a cationic initiator. By mixing sulfonated RGO (SRGO) into the SAN polymer matrix, positively‐charged SAN particles were attracted to the negatively‐charged surfaces of SRGO sheets via electrostatic interactions. The storage modulus of SAN‐SRGO increased to 46% at 4 wt% SRGO loading. This improvement is attributed to strong interactions between sulfonated groups on the surface SRGO and the nitrile groups of SAN. POLYM. COMPOS., 44–50, 2016. © 2014 Society of Plastics Engineers