TY - JOUR
T1 - Studies on mechanical interfacial properties of oxy-fluorinated carbon fibers-reinforced composites
AU - Park, Soo Jin
AU - Seo, Min Kang
AU - Rhee, Kyong Yop
PY - 2003/9/15
Y1 - 2003/9/15
N2 - In this work, the effect of oxy-fluorination on physicochemical properties of polyacrylonitrile (PAN)-based carbon fibers has been investigated. The chemical composition of the oxy-fluorinated carbon fibers is determined by X-ray photoelectron spectroscopy (XPS) measurement. Mechanical interfacial properties, such as interlaminar shear strength (ILSS), fracture toughness (KIC), work of fracture (Wf) and fracture energy (GIC) of the composites are also studied in terms of oxy-fluorination conditions. From the surface analysis, it is found that oxy-fluorination led to an introducing of the fluorine and oxygen functional groups on carbon fiber surfaces, which are more efficient and reactive to undergo an interfacial reaction to matrix materials. Moreover, the formation of CFx physical bonding of the carbon fibers with fluorine increases the surface polarity of the fibers, resulting in increased ILSS, KIC, Wf and GIC of the composites, due to the improvement of interfacial adhesion between fibers and matrix resins.
AB - In this work, the effect of oxy-fluorination on physicochemical properties of polyacrylonitrile (PAN)-based carbon fibers has been investigated. The chemical composition of the oxy-fluorinated carbon fibers is determined by X-ray photoelectron spectroscopy (XPS) measurement. Mechanical interfacial properties, such as interlaminar shear strength (ILSS), fracture toughness (KIC), work of fracture (Wf) and fracture energy (GIC) of the composites are also studied in terms of oxy-fluorination conditions. From the surface analysis, it is found that oxy-fluorination led to an introducing of the fluorine and oxygen functional groups on carbon fiber surfaces, which are more efficient and reactive to undergo an interfacial reaction to matrix materials. Moreover, the formation of CFx physical bonding of the carbon fibers with fluorine increases the surface polarity of the fibers, resulting in increased ILSS, KIC, Wf and GIC of the composites, due to the improvement of interfacial adhesion between fibers and matrix resins.
KW - Mechanical interfacial properties
KW - Oxy-fluorination
KW - PAN-based carbon fibers
KW - Surface polarity
UR - http://www.scopus.com/inward/record.url?scp=0042974223&partnerID=8YFLogxK
U2 - 10.1016/S0921-5093(03)00134-5
DO - 10.1016/S0921-5093(03)00134-5
M3 - Article
AN - SCOPUS:0042974223
SN - 0921-5093
VL - 356
SP - 219
EP - 226
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 1-2
ER -