TITLE:
Graphene Sheets with Modified Surface by Sodium Lauryl Sulfate Surfactant for Biomedical Applications
AUTHORS:
Zhypargul Abdullaeva, Zhazgul Kelgenbaeva, Tsushida Masayuki, Megumi Hirano, Shoji Nagaoka, Tomohiro Shirosaki
KEYWORDS:
Graphene, Synthesis, Surface Modification, Surfactant, Attenuated Total Reflection
JOURNAL NAME:
Graphene,
Vol.5 No.4,
September
29,
2016
ABSTRACT: This work describes synthesis of graphene sheets with modified surface by sodium
lauryl sulfate (SLS) surfactant using one-pot solvothermal reaction method. Effect of
sodium lauryl sulfate surfactant amount on surface modification level of graphene
sheets was investigated. Ether (-S-OR- at 762 cm-1 - 863 cm-1), thiocarbonyl (=C=S
at 1050 cm-1- 1176 cm-1) and sulfoxide (S-O, Vs and Vas at 1030 cm-1 - 1450 cm-1)
functional groups released from sodium lauryl sulfate (SLS) surfactant during solvothermal
reaction and attached on the surface of graphene sheets were detected by
(attenuated total reflectance-fast Fourier infrared) ATR-FTIR spectroscopy. (Atomic
force microscope) AFM observations revealed apparent surface of graphene sheets
modified by surfactant molecules with an average multiple profile of graphene nanosheets
≈ 4.8 nm high. This synthesis way of surface modified graphene sheets can
be considered as easy, one-step and cheap method for manufacturing of novel biosurface
with graphene, as reinforcement for biopolymer coatings such as ultra-high
molecular weight polypropylene (UHMWPE), metallic biomaterials (Ti and Ti alloys)
and bioceramics as hydroxyapatite (HA).