Abstract
Surface free energy of various carbon fibers was determined by tensiometric method in three different procedures. The dispersiveγ d s and the nondispersiveγ p s components were separately determined by contact angle measurements in two-phase system, formamide-n-alkanes. Theγ p s increased by oxidation and decreased by hydrogen reduction, while theγ d s remained almost constant.Theγ p s value determined from contact angle of water/ethyleneglycol solution tended to become higher. The critical surface free energy was in harmony with the total free energy determined from formamide-n-alkanes system as long as liquids were properly selected. The formation of oxygen-containing functional groups was evidenced by ESCA, and the surface [O]/[C] ratio was related linearly to the surface polarity defined byγ p s [γ d s +γ p s ] Oxidation in liquid phase resulted in the formation of both hydroxyls and carboxyls, while only hydroxyls were formed in gas phase. The interfacial shear strength of the fiber-epoxy resin could be closely correlated with thermodynamical work of adhesion calculated on the basis of surface free energy and its component.
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References
Schonhorn H, Frisch HL (1973) J Polym Sci 11:1005
Schultz J, Gent AN (1973) J Chim Phys 70:708
Kaelble DH (1974) J Appl Polym Sci 18:1869
Gledhill RA, Kinloch AJ (1974) J Adhesion 6:315
Schonhorn H (1979) J Appl Polym Sci 23:687
Gledhil RA, Kinloch AJ, Shaw SJ (1977) J Adhesion 9:81
Carre C, Schultz J (1983) J Adhesion 15:151
Absolom DR, Neuman AW (1987) J Adhesion 22:329
Schultz J, Lavielle L, Martin C (1987) J Chim Phys 84:231
Vukov AJ, Gray DK (1988) Langmuir 4:743
Kaelble DH (1970) Physical Chemistry of Adhesion. Wiley-Interscience, New York, p 149
Schultz J, Tsutsumi K, Donnet JB (1977) J Colloid Interface Sci 59:272
Schultz J, Tsutsumi K, Donnet JB (1977) J Colloid Interface Sci 59:277
Miller B (1977) In: Schick MJ (ed) Surface Characteristics of Fibers and Textiles. Marcel Dekker Inc, New York, p 417
Bayramili E, Van de Ven TGM, Mason SG (1981) Colloids & Surfaces 3:131
Schultz J, Cazeneuve M, Shanahan MER, Donnet JB (1981) J Adhesion 12:221
Donnet JB, Brendre M, Dhami TL, Bahl OP (1986) Carbon 24:757
Tsutsumi K, Abe Y (1989) Colloid Polym Sci 267:637
Kammath YK (1984) J Appl Polym Sci 29:1011
Scofield JH (1976) J Electron Spectrosc 8:129
Hammer GE, Drzal LT (1980) Appl Surface Sci 4:340
Hagiwara S, Tsutsumi K, Takahashi H (1978) Carbon 16:89
Zisman WA (1964) In: Gould RF (ed) Adv Chem Ser 43, Am Chem Soc, Washington, p 1
Gordon JL (1963) J Phys Chem 67:1935
Donnet JB, Voet A (1976) Carbob Black. Marcel Dekker, Inc, New York, p 127
Donnet JB, Bansal RC (1984) Carbon Fibers. Marcel Dekker Inc, New York, p 115
Procter A, Sherwood PMA (1982) J Electron Spectroscopy & Related Phenomena 27:39
Denison P, Jones FR, Watts JF (1985) J Mat Sci 20:4647
Denison P, Jones FR, Watts JF (1986) Surface & Interface Anal 9:431
Dilks A (1981) In: Brundle CR, Baker AD (eds) Electron Spectroscopy: Theory, Technique and Applications, vol 4. Academic Press, New York, p 277
Schultz J, Lavielle L, Martin C (1987) J Adhesion 23:45
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Tsutsumi, K., Ishida, S. & Shibata, K. Determination of the surface free energy of modified carbon fibers and its relation to the work of adhesion. Colloid & Polymer Sci 268, 31–37 (1990). https://doi.org/10.1007/BF01410420
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DOI: https://doi.org/10.1007/BF01410420