열안정제에 의한 제전성 폴리에틸렌테레프탈레이트의 고유점도 및 수분율의 거동 변화

김문찬; 이철규

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.5, 707-710, August, 1999

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열안정제에 의한 제전성 폴리에틸렌테레프탈레이트의 고유점도 및 수분율의 거동 변화

Behavior of Intrinsic Viscosity and Moisture Content of Antistatic Polyethyleneterephthalate by Thermal Stabilizer

김문찬, 이철규

초록

제전성 폴리에틸렌테레프탈레이트(PET)에 열안정제를 첨가하여 수분율과 고유점도의 거동변화를 연구하였다. 제전 PET의 최종 수분율은 건조시간보다는 건조온도의 함수로 나타났다. 용융방사후 제전 PET의 고유점도 강하는 수분율이 증가함에 따라 증가했다. 용융방사후 제전 PET의 고유점도가 감소했는데 이것은 제전제 성분중 폴리옥시알킬렌글리콜(POAG) 성분의 열화 열분해에 의한 것이다. 열안정제로서 trimethylphosphate(TMP)를 사용하는 것보다 triphenylphosphate(TPP)를 사용한 것이 더 효과적이었다. 열안정제로서 TPP를 300ppm 사용한 것이 용융방사후 고유점도의 저하가 적었다.

Moisture content and intrinsic viscosity of antistatic polyethyleneterephthalate(PET) depending on the thermal stabilizer content was studied. The terminal moisture content of antistatic PET was a function of drying temperature rather than drying time. Intrinsic viscosity drop of antistatic PET after melt spinning increased with increasing moisture content of it. After melt spinning, intrinsic viscosity of antistatic PET was decreased due to the thermal degradation of polyoxyalkyleneglycol(POAG) component of antistatic agent. Triphenylphosphate(TPP) was more effective as a thermal stabilizer than trimethylphosphate(TMP). A little intrinsic viscosity drop after melt spinning was found in PET containing 300 ppm of TPP as a thermal stabilizer.

Keywords:Polyethyleneterephthalate;Intrinsic viscosity;Moisture content;Triphenylphosphate

[References]

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[5] Pilati F, Gostoli GC, Sarti GC, Polym. Process Eng., 4, 303 (1986)

[6] McAlea KP, Schultz JM, Gardner KH, Wignall GD, Polymer, 27, 1581 (1986)

[7] Smith WA, Barlow JW, Paul DR, J. Appl. Polym. Sci., 26, 4233 (1981)

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[9] Findlay RH, White DC, Appl. Environ. Microbiol., 45, 71 (1983)

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[11] Zimmerman H, Kim NT, Polym. Eng. Sci., 20, 680 (1980)