Determination of the Molecular Weight Distributions from Rheological Properties of Viscoelastic Polymers

Nam Jeong Kim; Jeong Hwan Bang; Sang Won Choi; Eung Ryul Kim

Journal of Industrial and Engineering Chemistry, Vol.2, No.2, 97-105, November, 1996

Nam Jeong Kim, Jeong Hwan Bang¹, Sang Won Choi², and Eung Ryul Kim³

Department of Chemistry, Korean Sahmyook University, Seoul 139-742, Korea
¹Department of Chemistry, Seonam University, Chonbuk 590-170, Korea
²Department of Chemical Engineering, Yosu National Fisheries University, Chonnam 550-749, Korea
³Department of Chemistry, Hanyang University, Seoul 133-791, Korea

Relaxation spectra in polydisperse polymers were calculated by viscoelastic functions of stress relaxation following sudden straining. Inversion of these function provides an accurate way to estimate the molecular weight distribution of viscoelastic poymers. This theoretical treatment of the relationship between relaxation spectrum and molecular weight distribution is useful for determination of molecular weight distribution of insoluble or otherwise intractable polymers. The molecular weight distributions of nylon 6, polyacrylonitrile, undrawn PET and drawn PET filament fibers were obtained from the theoretical relationship between the relaxation spectra and the molecular weight distributions. We will describe the development of the molecular viscoelastic theory of polymers, and show the possibility of using the theory to correlate the molecular weight distribution and the relaxation spectrum from stress relaxation curves.

[References]

Gotz S, Sille W, Strobl G, Macromolecules, 26, 1520 (1993)
Izuka A, Winter HH, Macromolecules, 25, 2422 (1992)
Grossiord JL, Couarraze G, Leclerc B, Rheol. Acta, 27, 487 (1988)
Gloor WE, J. Appl. Polym. Sci., 22, 1177 (1978)
VanKrevenlen DW, Hoftyzer PJ, "Properties of Polymers," Elsevier Sci. Publishing Co. (1980)
Kim NJ, Kim ER, Hahn SJ, Bull. Korean Chem. Soc., 12, 468 (1991)
Kim NJ, Kim ER, Hahn SJ, Bull. Korean Chem. Soc., 13, 413 (1992)
Yu WC, Grassley WW, Macromolecules, 4, 458 (1971)
Thomas DP, Polym. Eng. Sci., 11, 305 (1971)
Nishida N, Salladay DG, White JL, J. Appl. Polym. Sci., 15, 1181 (1971)
Menefee E, J. Appl. Polym. Sci., 16, 2215 (1972)
Peticolas WL, J. Chem. Phys., 39, 3392 (1963)
Menefee E, Peticolas WL, J. Chem. Phys., 35, 946 (1961)
Kunugi T, Isobe I, Kimura K, J. Appl. Polym. Sci., 24, 923 (1979)
Ree T, Eyring H, J. Appl. Phys., 26, 793 (1955)
Eyring H, J. Chem. Phys., 4, 283 (1936)
Kim CH, Ree T, Bull. Korean Chem. Soc., 2, 96 (1981)
Fox TG, Gratch S, Loshaek S, "Rheology," ; Vol. 1, F.R. Eirich, Ed., Academic Press, New York (1956)
Manabe S, Sakoda A, Katda K, Takayanage M, Mem. Fac. Eng. Kyushu Univ., 28, 23 (1969)

[1] Gotz S, Sille W, Strobl G, Macromolecules, 26, 1520 (1993)

[2] Izuka A, Winter HH, Macromolecules, 25, 2422 (1992)

[3] Grossiord JL, Couarraze G, Leclerc B, Rheol. Acta, 27, 487 (1988)

[4] Gloor WE, J. Appl. Polym. Sci., 22, 1177 (1978)

[5] VanKrevenlen DW, Hoftyzer PJ, "Properties of Polymers," Elsevier Sci. Publishing Co. (1980)

[6] Kim NJ, Kim ER, Hahn SJ, Bull. Korean Chem. Soc., 12, 468 (1991)

[7] Kim NJ, Kim ER, Hahn SJ, Bull. Korean Chem. Soc., 13, 413 (1992)

[8] Yu WC, Grassley WW, Macromolecules, 4, 458 (1971)

[9] Thomas DP, Polym. Eng. Sci., 11, 305 (1971)

[10] Nishida N, Salladay DG, White JL, J. Appl. Polym. Sci., 15, 1181 (1971)

[11] Menefee E, J. Appl. Polym. Sci., 16, 2215 (1972)

[12] Peticolas WL, J. Chem. Phys., 39, 3392 (1963)

[13] Menefee E, Peticolas WL, J. Chem. Phys., 35, 946 (1961)

[14] Kunugi T, Isobe I, Kimura K, J. Appl. Polym. Sci., 24, 923 (1979)

[15] Ree T, Eyring H, J. Appl. Phys., 26, 793 (1955)

[16] Eyring H, J. Chem. Phys., 4, 283 (1936)

[17] Kim CH, Ree T, Bull. Korean Chem. Soc., 2, 96 (1981)

[18] Fox TG, Gratch S, Loshaek S, "Rheology," ; Vol. 1, F.R. Eirich, Ed., Academic Press, New York (1956)

[19] Manabe S, Sakoda A, Katda K, Takayanage M, Mem. Fac. Eng. Kyushu Univ., 28, 23 (1969)