회석액내에서 서로 다른 길리의 분지를 가진 빗모양의 고분자 분자의 점탄성 거동에 관한 연구

서용석; 황승상; 김광웅

Korean Journal of Rheology, Vol.3, No.2, 148-155, October, 1991

Export Citation

회석액내에서 서로 다른 길리의 분지를 가진 빗모양의 고분자 분자의 점탄성 거동에 관한 연구

A Study on the Viscoelastic Behavior of Dilute Solutions of Comb-Shaped Non-equal-Length Branched Polymers

서용석, 황승상, 김광웅

초록

본 연구에서는 빗모양의 고분자분자가 희석용액 상태에 있을 때의 점탄성 거동을 이론적으로 해석하였다. 수치해석 방법으로는 Osaki 등이 제안한 방법을 따랐다. 고분자분자의 이완시간은 Eigenvalue equation을 풀어서 구하였으며 고분자분자와 용매간의 역학은 Zimm-Kilb model을 적용하였다. 본 연구에서는 분지쇄의 길이가 다른 경우 이들이 분자쇄 거동에 미치는 영향을 고찰하였으며 높은 진동수에서의 현상을 해석하였다.

ln this study, viscoelastic behaviour of comb-shaped polymer molecule in dilute solution was theoretically investigated. Adopted numerical scheme follows that of Osaki et at's rrlethod. Relaxation time spectrum was calculated by solving the eigenvalue equation which came from Zimm-Kilb theory for the interaction between the polymer molecule and solvent. Based on the numerical results, the effect of branch length and polymer molecule's behavior at high frequency were discussed.

Keywords:Non-equal length branched polymers;Viscoelastic behavior;High frequency;Bead-springs model.

[References]

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Struglinski MJ, Graessley WW, Macromolecules, 18, 2630 (1985)
Watanable H, Kotaka T, Macromolecules, 17, 2316 (1984)

[1] Roovers J, Toporowski PM, Macromolecules, 20, 2300 (1987)

[2] Roovers J, Graessley WW, Macromolecules, 14, 766 (1981)

[3] Bailey RT, North AM, Pethrick RA, "Molecular Motion in High Polymers," Clarendon Press, Oxford (1981)

[4] Osaki K, Mitsuda Y, Shrag JL, Ferry JD, Trans. Soc. Rheol., 18, 395 (1974)

[5] Zimm BH, Kilb RW, J. Polym. Sci., 37, 19 (1969)

[6] Lodge AS, Wu YJ, Rheol. Acta, 10, 539 (1971)

[7] Ferry JD, "Viscoelastic Properties of Polymers," 3rd edn., John Wiley & Sons, Inc., New York (1980)

[8] Larson RG, "Constitutive Equations for Polymer Melts and Solutions," Butterworths, Boston (1988)

[9] Struglinski MJ, Graessley WW, Macromolecules, 18, 2630 (1985)

[10] Watanable H, Kotaka T, Macromolecules, 17, 2316 (1984)