분자량 분포와 사슬구조가 엉킨 유연성 고분자의 점탄성에 미치는 영향

최광식; 김희영; 정인재

Korean Journal of Rheology, Vol.2, No.2, 45-55, December, 1990

Export Citation

분자량 분포와 사슬구조가 엉킨 유연성 고분자의 점탄성에 미치는 영향

Effect of Large-scale Molecular Structure on the Viscoelastic Properties of Entangled Flexible Polymers

최광식, 김희영, 정인재

초록

분자량이 큰 고분자의 구조가 점탄성에 미치는 엉향을 설명하기 위해 선형-선형 고분차 블랜드에 적용되었던 equivalent primitive chain 모델을 블렌드의 긴 완화시간을 갖는 사슬이 엉킴이 중요한 star 고분자를 포함하는 고농도 용액에까지 확장한다. 긴 완화시간을 갖는 사슬의 완화현상에서 이 사슬의 국부에서 주의 사슬들의 제약이 해제되므로서 일어나는 현상을 고려하여 분자량과 사슬구조는 다르나 화학적 성질은 같은 이성분계 고분자 블랜드의 유변학적 거동을 설명한다.

In order to describe the effects of large-scale molecular structure on viscoelastic properties, the equivalent primitive chain model previously suggested for linear-linear blends is extended to star-containing blends especially in concentrated region where the entanglements between higher relaxation-time components are prominent. Taking into account the significance of the tube renewal by the local constraint release for the relaxation process of a model chain with higher relaxation time, consider, the inhomogeneous binary blend composed of different chain structures on large-scale but chemically identical species as a homogeneous blend consisted of same structures with different effective molecular sizes.

Keywords:Melt rheology;Equivalent Primitive Chain model;Linear-Star blends;Relaxation process

[References]

Ferry JD, "Viscoelastic Prope ties of Polymers," 3rd ed., Wiley, New York (1980)
Rocherfort WE, Smith GG, Rachapudy H, Raju VR, Graessley WW, J. Polym. Sci. B: Polym. Phys., 17, 1197 (1979)
Graessley WW, Roovers J, Macromolecules, 12, 959 (1979)
Graessley WW, Accounts Chem. Res., 10, 332 (1977)
Roovers J, Polymer, 26, 1092 (1985)
de Gennes PG, J. Chem. Phys., 55, 572 (1971)
de Gennes PG, J. Phys., 36, 1199 (1975)
Bartels CR, Crist B, Fetters LJ, Graessley WW, Macromolecules, 19, 785 (1986)
Klein J, Macromolecules, 11, 852 (1978)
Graessley WW, Adv. Polym. Sci., 47, 67 (1982)
Struglinski MJ, Graessley WW, Macromolecules, 18, 2630 (1985)
Struglinski MJ, Graessley WW, Macromolecules, 18, 1754 (1986)
Klein J, Macromolecules, 19, 105 (1986)
Doi M, Graessley WW, Helfand E, Pearson DS, Macromolecules, 20, 1900 (1987)
Kim HY, Chung IJ, J. Polym. Sci. B: Polym. Phys., 25, 2039 (1987)
Struglinski MJ, Graessley WW, Fetters LJ, Macromolecules, 21, 783 (1988)
Doi M, J. Polym. Sci. B: Polym. Phys., 18, 1005 (1980)
Lin YH, Macromolecules, 17, 2846 (1984)
Viovy JL, J. Polym. Sci. B: Polym. Phys., 23, 2423 (1985)
Doi M, Edwards SF, J. Chem. Soc.-Faraday Trans., 74, 1802 (1978)
Doi M, Kuzuu NY, J. Polym. Sci. C: Polym. Lett., 18, 775 (1980)
Pearson DS, Helfand E, Macromolecules, 17, 888 (1984)
Roovers J, Macromolecules, 20, 148 (1987)
Doi M, Edwards SF, J. Chem. Soc.-Faraday Trans., 74, 1818 (1978)
Montfort JP, Marin C, Monge P, Macromolecules, 17, 1551 (1984)
Watanabe H, Sakamoto T, Kotaka T, Macromolecules, 18, 1008 (1985)

[Referenced By]

[1] Ferry JD, "Viscoelastic Prope ties of Polymers," 3rd ed., Wiley, New York (1980)

[2] Rocherfort WE, Smith GG, Rachapudy H, Raju VR, Graessley WW, J. Polym. Sci. B: Polym. Phys., 17, 1197 (1979)

[3] Graessley WW, Roovers J, Macromolecules, 12, 959 (1979)

[4] Graessley WW, Accounts Chem. Res., 10, 332 (1977)

[5] Roovers J, Polymer, 26, 1092 (1985)

[6] de Gennes PG, J. Chem. Phys., 55, 572 (1971)

[7] de Gennes PG, J. Phys., 36, 1199 (1975)

[8] Bartels CR, Crist B, Fetters LJ, Graessley WW, Macromolecules, 19, 785 (1986)

[9] Klein J, Macromolecules, 11, 852 (1978)

[10] Graessley WW, Adv. Polym. Sci., 47, 67 (1982)

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

[12] Struglinski MJ, Graessley WW, Macromolecules, 18, 1754 (1986)

[13] Klein J, Macromolecules, 19, 105 (1986)

[14] Doi M, Graessley WW, Helfand E, Pearson DS, Macromolecules, 20, 1900 (1987)

[15] Kim HY, Chung IJ, J. Polym. Sci. B: Polym. Phys., 25, 2039 (1987)

[16] Struglinski MJ, Graessley WW, Fetters LJ, Macromolecules, 21, 783 (1988)

[17] Doi M, J. Polym. Sci. B: Polym. Phys., 18, 1005 (1980)

[18] Lin YH, Macromolecules, 17, 2846 (1984)

[19] Viovy JL, J. Polym. Sci. B: Polym. Phys., 23, 2423 (1985)

[20] Doi M, Edwards SF, J. Chem. Soc.-Faraday Trans., 74, 1802 (1978)

[21] Doi M, Kuzuu NY, J. Polym. Sci. C: Polym. Lett., 18, 775 (1980)

[22] Pearson DS, Helfand E, Macromolecules, 17, 888 (1984)

[23] Roovers J, Macromolecules, 20, 148 (1987)

[24] Doi M, Edwards SF, J. Chem. Soc.-Faraday Trans., 74, 1818 (1978)

[25] Montfort JP, Marin C, Monge P, Macromolecules, 17, 1551 (1984)

[26] Watanabe H, Sakamoto T, Kotaka T, Macromolecules, 18, 1008 (1985)