In this section
@article{Thielmann:2005,
author = {Thielmann, F and Burnett, D and Bismarck, A},
journal = {International SAMPE Symposium and Exhibition Proceedings},
pages = {1551--1558},
title = {Measuring adhesion phenomena between carbon fibers and model polymer matrices},
volume = {50},
year = {2005}
}
TY - JOUR
AB - The interaction between carbon fibers with different surface treatments and thermoplastic polymer matrices were investigated through thermodynamic, work of adhesion calculations and mechanical, practical adhesion measurements. The works of adhesion between carbon fiber and polymer were done by measuring the dispersive and specific surface energetics of the individual components using Inverse Gas Chromatography (IGC). The mechanical adhesion measurements were performed by measuring the interfacial shear stress of the carbon fiber imbedded into the polymer through single fiber pull-out testing. The PAN-based carbon fibers under investigation were an untreated (CA), an oxidized (AS4) and an oxidized and epoxy-sized (AS4-GP) material. The polymer matrices studied were polycarbonate, polysulfone, and polyetherimide. The IGC surface energy experiments revealed a much higher dispersive surface energy for the AS4 sample compared to the CA sample, indicating that oxidation creates a more active surface. The sized, AS4-GP, sample had the lowest dispersive surface energy due to the passivation of the surface from the epoxy-based sizing agent. Specific interactions showed a decrease in the basicity from the untreated to oxidized samples, while the acidity increases. Works of adhesion calculated from the surface energetics correlated well with the interfacial shear stress values. For all three polymers there was an increase in both the work of adhesion and shear strength values by oxidizing the carbon fiber. The sizing material does not significantly increase the shear strength despite a higher work of adhesion value, which may be caused by the polymers and epoxy-based sizing agent not being compatible.
AU - Thielmann,F
AU - Burnett,D
AU - Bismarck,A
EP - 1558
PY - 2005///
SN - 0891-0138
SP - 1551
TI - Measuring adhesion phenomena between carbon fibers and model polymer matrices
T2 - International SAMPE Symposium and Exhibition Proceedings
VL - 50
ER -
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