폴리에틸렌과 나일론6의 비상용 블렌드의 유변학적·형태학적 특성에 관한 연구

최수명; 홍성일

Korean Journal of Rheology, Vol.5, No.1, 23-33, June, 1993

Export Citation

폴리에틸렌과 나일론6의 비상용 블렌드의 유변학적·형태학적 특성에 관한 연구

A Study on the Rheological and Morphological Properties for Immiscible Blends of Polyethylene and Nylon 6

최수명, 홍성일

초록

저밀도폴리에틸렌과 나일론6의 블렌드가 용융압출기의 사용에 의해 제조되었다. 제조된 비상용 블렌드의 유변학적, 형태학적 분석을 통하여 이들 사이의 상관관계를 조사하였다. 전단속도, 계면장력, 용융점도, 분산상의 농도들에 대한 분산상의 크기의 의존성을 평가하였다. 한편, 신장유동에 의한 모폴로지 변화를 조사하기 위하여 기제조된 블렌드를 사용하여 용융방사를 하였다. 이러한 방사실험으로부터 본 연구에 사용된 저밀도 폴리에틸렌과 나일론6는 분산상과 연속상의 신장점도의 상대적 크기와 무관하게 피브릴화가 되어, 방사 연신비의 증가에 의해 매우 가는 분산된 피브릴을 얻을 수 있었다.

Blends of low density polyethylene and nylon 6 were prepared in a screw extruder combined with a static mixer These immiscible binary blends were investigated considering the rheological properties and phase morphology. The effect of hydrodynamic conditions such as shear rate, interfacial tension, viscosity, and dispersed phase concentration on the number average size of the dispersed phase was studied. In order to study morphological changes in the fiber cross-section during the attenuation process of the fiber, an experiment by a lab-scale melt spinning equipment was carried out. The dispersed fibrils of nylon 6 or LDPE could be made much thinner by increasing the stretch ratio, irrespective of elongational viscosity ratio of the dispersed to continuous phases

Keywords:Dispersed phase;Continuous phase;Shear viscosity;Interfacial tension;Elongational viscosity;Fibrillation

[References]

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Taylor GI, Proc. Roy. Soc. London A, 138, 41 (1932)
Bartok W, Mason SG, J. Colloid Sci., 13, 293 (1958)
Bartok W, Mason SG, J. Colloid Sci., 14, 13 (1959)
Rumscheidt FD, Mason SG, J. Colloid Sci., 16, 210 (1961)
Rumscheidt FD, Mason SG, J. Colloid Sci., 16, 238 (1961)
Karam HJ, Bellinger JC, Ind. Eng. Chem. Fundam., 7, 576 (1968)
Grace HP, Chem. Eng. Commun., 14, 225 (1982)
Choi SJ, Schowalter WR, Phys. Fluids, 18, 420 (1975)
Flumerfelt RW, Ind. Eng. Chem. Fundam., 11, 312 (1972)
Tavgac T, Ph.D. Dissertation, Univ. of Houston, Houston, Texas (1972)
Chin HB, Han CD, J. Rheol., 23, 557 (1979)
Chin HB, Han CD, J. Rheol., 24, 1 (1980)
Wu S, Polym. Eng. Sci., 27, 335 (1987)
Serpe G, Jarrin J, Dawans F, Polym. Eng. Sci., 30, 553 (1990)
Miles IS, Zurek A, Polym. Eng. Sci., 28, 796 (1988)
Bird RB, Armstrong RC, Hassager O, "Dynamics of Polymeric Liquids," Vol. 1, John Wiley & Sons, New York (1977)
Favis BD, Chalifoux JP, Polymer, 29, 1761 (1988)
Elmendorp JJ, DeVos G, Polym. Eng. Sci., 26, 415 (1986)
Lee WK, Ph.D. Dissertation, Univ. of Houston, Houston, Texas (1972)
Acierno D, Dalton JN, Rodriguez JM, White JL, J. Appl. Polym. Sci., 15, 2395 (1971)
Shimizu J, Okui N, Yamamoto T, Ishii M, Takaku A, Sen-I Gakkaishi, 38, T1 (1982)
Han CD, Kim YW, J. Appl. Polym. Sci., 18, 2589 (1974)
Barnes HA, Hutton JF, Walters K, "An Introduction to Rheology," Elsevier (1989)
Ide Y, White JL, J. Appl. Polym. Sci., 22, 1061 (1978)

[1] Taylor GI, Proc. Roy. Soc. London A, 146, 501 (1934)

[2] Taylor GI, Proc. Roy. Soc. London A, 138, 41 (1932)

[3] Bartok W, Mason SG, J. Colloid Sci., 13, 293 (1958)

[4] Bartok W, Mason SG, J. Colloid Sci., 14, 13 (1959)

[5] Rumscheidt FD, Mason SG, J. Colloid Sci., 16, 210 (1961)

[6] Rumscheidt FD, Mason SG, J. Colloid Sci., 16, 238 (1961)

[7] Karam HJ, Bellinger JC, Ind. Eng. Chem. Fundam., 7, 576 (1968)

[8] Grace HP, Chem. Eng. Commun., 14, 225 (1982)

[9] Choi SJ, Schowalter WR, Phys. Fluids, 18, 420 (1975)

[10] Flumerfelt RW, Ind. Eng. Chem. Fundam., 11, 312 (1972)

[11] Tavgac T, Ph.D. Dissertation, Univ. of Houston, Houston, Texas (1972)

[12] Chin HB, Han CD, J. Rheol., 23, 557 (1979)

[13] Chin HB, Han CD, J. Rheol., 24, 1 (1980)

[14] Wu S, Polym. Eng. Sci., 27, 335 (1987)

[15] Serpe G, Jarrin J, Dawans F, Polym. Eng. Sci., 30, 553 (1990)

[16] Miles IS, Zurek A, Polym. Eng. Sci., 28, 796 (1988)

[17] Bird RB, Armstrong RC, Hassager O, "Dynamics of Polymeric Liquids," Vol. 1, John Wiley & Sons, New York (1977)

[18] Favis BD, Chalifoux JP, Polymer, 29, 1761 (1988)

[19] Elmendorp JJ, DeVos G, Polym. Eng. Sci., 26, 415 (1986)

[20] Lee WK, Ph.D. Dissertation, Univ. of Houston, Houston, Texas (1972)

[21] Acierno D, Dalton JN, Rodriguez JM, White JL, J. Appl. Polym. Sci., 15, 2395 (1971)

[22] Shimizu J, Okui N, Yamamoto T, Ishii M, Takaku A, Sen-I Gakkaishi, 38, T1 (1982)

[23] Han CD, Kim YW, J. Appl. Polym. Sci., 18, 2589 (1974)

[24] Barnes HA, Hutton JF, Walters K, "An Introduction to Rheology," Elsevier (1989)

[25] Ide Y, White JL, J. Appl. Polym. Sci., 22, 1061 (1978)