TY - JOUR

T1 - Graphite Fïber-Epoxy Interphase Modification by Electrodeposition of Poly (Styrene-Co-Maleic Anhydride) and Its Influence on Composite Properties

AU - Subramanian, R. V.

AU - Sanadi, A. R.

AU - Crasto, A.

AU - Crasto, A.

N1 - Funding Information: Acknowledgements We would like to acknowledge the Electron Microscopy Center and Christine Davitt for their assistance in scanning electron microscopy, and Scott Cornelius for assistance in electron microprobe analysis. This research was partially supported by a sub-contract from Battelle Columbus Laboratories, Advanced Materials Center for Commercial of

PY - 1990

Y1 - 1990

N2 - An electrodeposition technique has been used for the modification of the fiber-matrix interphase in graphite fiber-epoxy composites. A coating of poly(styrene-co-maleic anhydride) (SMA) polymer was electrodeposited from an aqueous solution on AU graphite fibers used as electrodes in an electrolytic cell. Different electrocoating parameters were initially used to establish the optimum conditions to achieve thin uniform coatings suitable for functioning as interphases in composites reinforced by the coated fibers. The interfacial shear strength (IFSS), evaluated by a single-fiber composite technique, showed that the SMA coating resulted in an improvement of about 50% in IFSS compared with the commercially treated fibers (AS). This was achieved without sacrificing impact strength. Evidence of good epoxy penetration into the coating was obtained by the use of electron microprobe line scans for bromine across the diameter of a filament in a single fiber composite—the bromine introduced through the use of a brominated epoxy resin. The observed improvement in the fiber-matrix interfacial shear strengths is dependent on the co-monomer ratio in electrodeposited SMA.

AB - An electrodeposition technique has been used for the modification of the fiber-matrix interphase in graphite fiber-epoxy composites. A coating of poly(styrene-co-maleic anhydride) (SMA) polymer was electrodeposited from an aqueous solution on AU graphite fibers used as electrodes in an electrolytic cell. Different electrocoating parameters were initially used to establish the optimum conditions to achieve thin uniform coatings suitable for functioning as interphases in composites reinforced by the coated fibers. The interfacial shear strength (IFSS), evaluated by a single-fiber composite technique, showed that the SMA coating resulted in an improvement of about 50% in IFSS compared with the commercially treated fibers (AS). This was achieved without sacrificing impact strength. Evidence of good epoxy penetration into the coating was obtained by the use of electron microprobe line scans for bromine across the diameter of a filament in a single fiber composite—the bromine introduced through the use of a brominated epoxy resin. The observed improvement in the fiber-matrix interfacial shear strengths is dependent on the co-monomer ratio in electrodeposited SMA.

KW - electrodeposition

KW - fiber-matrix interphase

KW - Graphite composite

KW - maleic anhydride copolymers

UR - http://www.scopus.com/inward/record.url?scp=23044450311&partnerID=8YFLogxK

U2 - 10.1163/156856190X00711

DO - 10.1163/156856190X00711

M3 - Journal article

AN - SCOPUS:23044450311

VL - 4

SP - 829

EP - 846

JO - Journal of Adhesion Science and Technology

JF - Journal of Adhesion Science and Technology

SN - 0169-4243

IS - 1

ER -