폐폴리(염화 비닐)계 고분자 블렌드의 구조 및 물성 연구(II)-폐폴리(염화 비닐)/폴리에틸렌 고분자 블렌드의 형태학 및 유변학적 거동

유영재; 박재찬; 원종찬; 최길영; 이재흥; Youngjae Yoo; Jae Chan Park; Jong Chan Won; Kil-Yeong Choi; Jae Heung Lee

Polymer(Korea), Vol.28, No.6, 460-467, November, 2004

Morphology and Mechanical Properties of Waste PVC Blends (II) - The Relationship between Rheology and Morphology of Waste PVC/PE Blends

유영재 , 박재찬 , 원종찬 , 최길영 , 이재흥 ^†

한국화학연구원 고분자나노소재연구팀

Youngjae Yoo , Jae Chan Park , Jong Chan Won , Kil-Yeong Choi , and Jae Heung Lee^†

Polymeric Nanomaterials Lab., Korea Research Institute of Chemical Technology, P. O. Box 107, Yuseong, Daejeon 305-600, Korea

E-mail:

초록

폐폴리(염화 비닐) 수지 [waste poly(vinyl chloride), RPVC]와 폐폴리에틸렌 수지 (waste polyethylene, RPE)를 용융 블렌드하여 이들의 형태학적 특성과 유변학적 성질을 관찰하였다. 대수 가감 법칙 (Log additivity rule)으로 계산된 값과 측정된 토크 변화를 비교해보면, 고분자 블렌드는 서로 비상용성을 나타내는 음의 편차 거동을 보였다. 평형판 레오미터와 모세관 레오미터를 사용하여 측정한 블렌드의 유변학적 성질은 용융 상태에서 전단 속도가 증가함에 따라 전단 점도가 감소하는 경향을 보였다. RPVC/RPE 블렌드에 상용화제를 첨가하면 단순 블렌드보다 전단 점도가 증가하였으며 이는 상용성이 증가하여 분산상 크기가 감소하는 것을 확인하였다. 전단 점도 측정 후 얻은 시료를 전자 현미경으로 관찰해 보면 전단속도가 증가함에 따라 분산상의 크기가 약간씩 커지는 것이 관찰되었고 또한, 시료의 표면층보다 내부의 분산성이 커지는 것이 관찰되었다.

The polymer blends of waste poly(vinyl chloride) (RPVC) and waste polyethylene (RPE) were prepared by melt mixing. Their morphologies and rheological properties were investigated and torque changes were also measured. Comparing the torques calculated by the log additivity rule with measured torque changes, the polymer blends showed the large negative deviation behavior (NDB) due to their incompatibility. The shear viscosities of the blends decreased with increasing shear rates, showing shear thinning behavior. The shear viscosity of the blends with compatibilizer was larger than that of the blends without compatibilizer. SEM micrographs of the strands after measurement showed that the domain size of the blends was slightly enlarged with increasing the shear rate. Also, RPVC domain size was larger in the core-sections of the strands from capillary viscometer than in the surface region.

Keywords:waste PVC;waste PE;blend;rheology;morphology

[References]

Utracki LA, "Polymer Alloys and Blends", Hanser Publishers, New York (1992)
Favis BD, J. Appl. Polym. Sci., 39, 285 (1990)
Minsker KS, Polym. Sci. Ser. B, 42(1), 44 (2000)
Sakata Y, Uddin MA, Koizumi K, Murata K, Polym. Degrad. Stabil., 53, 111 (1996)
Ghaffar A, Scott G, Crowther P, Eur. Polym. J., 14, 631 (1976)
Paul DR, Vinson CE, Locke CE, Polym. Eng. Sci., 12, 157 (1972)
Park JC, Won JC, Choi KY, Cho SM, Kim MK, Lee JH, Polym.(Korea), 26, 1 (2001)
Gong YD, Lee JH, Chemworld, 41, 46 (2001)
Harada H, Plastics(Japan), 49(9), 18 (1998)
Akovali G, Bernardo CA, Leidner J, Utracki LA, Xanthos M, "Frontiers in the Science and Technology of Polymer Recycling", Chap. 4, Kluwer Academic Publishers, Dordrecht (1998)
Peixin H, Weidong X, Shiqiang H, Shiyuan C, J. Appl. Polym. Sci., 64, 2535 (1997)
Ghaffar A, Sadrmohaghegh C, Scott G, Eur. Polym. J., 17, 941 (1981)
Hajian M, Sadrmohaghegh C, Scott G, Eur. Polym. J., 20, 135 (1984)
Bataille P, Jolicoeur C, Schreiber HP, J. Vinyl. Tech., 2(4), 218 (1980)
Ajji A, Polym. Eng. Sci., 35(1), 64 (1995)
Francis J, George KE, J. Elastomer Plast., 24, 151 (1992)
Locke CE, Paul DR, J. Appl. Polym. Sci., 17, 2597 (1973)
Paul DR, Locke CE, Vison CE, Polym. Eng. Sci., 13, 202 (1973)
White JL, Min K, "Polymer Blends and Mixtures", Martinus Nijhoff, Dordrecht, The Netherlands (1984)
Roland CM, J. Polym. Sci. Part B: Polym. Sci., 26, 839 (1988)
Rezanova NM, Tsebrenko MV, Kampoz. Polym. Materials, 11, 47 (1981)
Darby R, "Viscoelastic Fluids: An Introduction to Their Properties and Behavior", Chap. 2, Marcel Dekker, Inc., New York and Basel (1976)

[Related Articles]

[1] Utracki LA, "Polymer Alloys and Blends", Hanser Publishers, New York (1992)

[2] Favis BD, J. Appl. Polym. Sci., 39, 285 (1990)

[3] Minsker KS, Polym. Sci. Ser. B, 42(1), 44 (2000)

[4] Sakata Y, Uddin MA, Koizumi K, Murata K, Polym. Degrad. Stabil., 53, 111 (1996)

[5] Ghaffar A, Scott G, Crowther P, Eur. Polym. J., 14, 631 (1976)

[6] Paul DR, Vinson CE, Locke CE, Polym. Eng. Sci., 12, 157 (1972)

[7] Park JC, Won JC, Choi KY, Cho SM, Kim MK, Lee JH, Polym.(Korea), 26, 1 (2001)

[8] Gong YD, Lee JH, Chemworld, 41, 46 (2001)

[9] Harada H, Plastics(Japan), 49(9), 18 (1998)

[10] Akovali G, Bernardo CA, Leidner J, Utracki LA, Xanthos M, "Frontiers in the Science and Technology of Polymer Recycling", Chap. 4, Kluwer Academic Publishers, Dordrecht (1998)

[11] Peixin H, Weidong X, Shiqiang H, Shiyuan C, J. Appl. Polym. Sci., 64, 2535 (1997)

[12] Ghaffar A, Sadrmohaghegh C, Scott G, Eur. Polym. J., 17, 941 (1981)

[13] Hajian M, Sadrmohaghegh C, Scott G, Eur. Polym. J., 20, 135 (1984)

[14] Bataille P, Jolicoeur C, Schreiber HP, J. Vinyl. Tech., 2(4), 218 (1980)

[15] Ajji A, Polym. Eng. Sci., 35(1), 64 (1995)

[16] Francis J, George KE, J. Elastomer Plast., 24, 151 (1992)

[17] Locke CE, Paul DR, J. Appl. Polym. Sci., 17, 2597 (1973)

[18] Paul DR, Locke CE, Vison CE, Polym. Eng. Sci., 13, 202 (1973)

[19] White JL, Min K, "Polymer Blends and Mixtures", Martinus Nijhoff, Dordrecht, The Netherlands (1984)

[20] Roland CM, J. Polym. Sci. Part B: Polym. Sci., 26, 839 (1988)

[21] Rezanova NM, Tsebrenko MV, Kampoz. Polym. Materials, 11, 47 (1981)

[22] Darby R, "Viscoelastic Fluids: An Introduction to Their Properties and Behavior", Chap. 2, Marcel Dekker, Inc., New York and Basel (1976)