상호에스테르 교환반응 촉매가 Poly(ethylene naphthalate)/Poly(ε-caprolactone) 블렌드의 반응 용융기공에 미치는 영향

강호종

Polymer(Korea), Vol.22, No.3, 416-423, May, 1998

The Effect of Transesterification Catalyst on the Reactive Melt Blending of Poly(ethylene naphthalate)/Poly(ε-caprolactone)

강호종

초록

Poly(ethylene naphthalate) (PEN)/poly(ε-caprolactone) (PCL) 용융 블렌딩시 발생하는 상호에스테르 교환반응을 조절하기 위하여 Zn-acetate와 Sb₂O₃를 에스테르 교환반응 촉매로 사용하여 PEN/PCL 블렌드를 제조하고 이들 촉매가 PEN/PCL 블렌드의 상호에스테르 교환반응 및 열적 특성에 미치는 영향을 살펴보았다. Zn-acetate는 저온 반응가공시 효과적인 상호에스테르 교환반응 촉매로 확인되었으며, Sb₂O₃는 고온에서 우수한 촉매 역할을 함을 알 수 있었다. 블렌드의 열적 특성은 상호에스테르 교환반응이 증가할수록 선형적으로 감소함을 확인할 수 있었으며 촉매 존재 유무, 반응 은도 등에 의하여 이러한 열적 성질의 감소 경향이 달라짐을 알 수 있었다.

Zn-acetate and Sb₂O₃ were used as the catalyst to control the transesterification in reactive melt blending of PEN/PCL. The effect of catalysts on the transesterification and the thermal properties of PEN/PCL blends were investigated. It was found that Zn-acetate is effective on transesterification at low processing temperature, but on the other hand it is relatively less effective than Sb₂O₃ at high processing temperature. The thermal properties of PEN/PCL blends decrease linearly with increasing transesterification level. This linear relationship is dependent upon the existence of catalyst, the reaction temperature, and reaction time.

[References]

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[1] Wang LH, Yang LM, Poter RS, J. Macromol. Sci.-Phys., B29, 476 (1990)

[2] Poter RS, Jonza JM, Kimura M, Desper CR, George ER, Polym. Eng. Sci., 29, 55 (1989)

[3] Montaudo G, Montaudo MS, Scamporrino E, Vitalini D, Macromolecules, 25, 5099 (1992)

[4] Devaux J, Godard P, Mercier JP, Polym. Eng. Sci., 22, 229 (1982)

[5] Stewart ME, Cox AJ, Nayor DM, Polymer, 34, 4060 (1993)

[6] Kotliar AM, Am. Chem. Soc. Polym. Prepr., 21, 180 (1980)

[7] Kumagai Y, Doi Y, Polym. Degrad. Stabil., 35, 87 (1992)

[8] Gada M, Gross RA, McCarthy SP, "Biodegradable Plastics and Polymers," p. 177, Y. Doi and K. Fukuda Eds., Elsevier Sci., New York (1994)

[9] Tokiwa Y, Iwamoto A, "Biodegradable Plastics and Polymers," p. 190, Y. Doi and K. Fukuda Eds., Elsevier Sci., New York (1994)

[10] Jun HS, Kim BO, Kim YC, Chang HN, Woo SI, "Biodegradable Plastics and Polymers," p. 498, Y. Doi and K. Fukuda Eds., Elsevier Sci., New York (1994)

[11] Han K, Kang HJ, Polym.(Korea), 20(2), 224 (1996)

[12] Han K, Kang HJ, Polym.(Korea), submitted

[13] Wang LH, Lu M, Yang X, Poter RS, J. Macromol. Sci.-Phys., B29, 171 (1990)

[14] Hovenkamp SG, J. Polym. Sci. A: Polym. Chem., 9, 3617 (1971)

[15] Cheung MF, Golovoy A, Cater RO, van Oene H, Ind. Eng. Chem. Res., 28, 476 (1989)

[16] Carduner KR, Cater RO, Cheung MF, Golovoy A, Van Oene H, J. Appl. Polym. Sci., 40, 963 (1990)

[17] Cheung MF, Golovoy A, Cater RO, van Oene H, J. Appl. Polym. Sci., 40, 977 (1990)

[18] Kenney JF, Polym. Eng. Sci., 8, 216 (1968)