| Issue |
Korean Chemical Engineering Research,
Vol.49, No.5, 611-616, 2011
Vol.49, No.5, 611-616, 2011
어닐링 온도에 따른 무배향 PLA 필름의 등온결정화 거동과 표면물성에 관한 연구
Study on Isothermal Crystallization Behavior and Surface Properties of Non-Oriented PLA Film with Annealing Temperature
본 연구에서는 무배향 PLA 필름의 어닐링(annealing) 단계를 통하여 온도별 PLA 필름의 avrami 결정화 속도식을 도출하고 결정화 속도상수(k)를 비교함으로써 최적화된 어닐링 온도를 제안하였다. 120, 130, 140 ℃ 온도에서 결정화된 필름의 결정화 속도상수(k)는 각각 1.64, 1.68, 1.26이었다. 필름표면에 대한 어닐링은 필름의 표면조도와 동마찰계 수에 영향을 주는데 80, 110, 120, 130, 140 ℃의 온도조건에서 표면조도(Ra)는 각각 0.006, 0.009, 0.015, 0.027, 0.029 μm로 높아졌고 동마찰계수(μk)는 0.45, 0.43, 0.33, 0.31, 0.27로 낮아졌다. 탈크를 1, 3, 5 wt%씩 첨가하는 경우 PLA 필름의 결정화 속도상수(k)는 0.58, 0.46, 0.39로 낮아졌다.
In the study, annealing temperature was optimized by comparing with avrami crystallization rate and constant (k) using non-oriented PLA film as a base film. Crystallization rate constant of PLA film was 1.64, 1.68, and 1.26 at 120 ℃, 130 ℃, and 140 ℃, respectively. Annealing temperature was mainly affected on the surface properties such as rougnness (Ra) and kinetic friction coefficient (μk). Roughness of PLA film was 0.006 μm at 80 ℃ and increased to 0.009 μm, 0.015 μm, 0.027 μm, and 0.029 μm at 110 ℃, 120 ℃, 130 ℃ and 140 ℃, respectively. Kinetic friction coefficient decreased 0.45 to 0.43, 0.33, 0.31, 0.27 as annealing temperature was at 80 ℃, 110 ℃, 120 ℃, 130 ℃, and 140 ℃, respectivly. In addition, rate constant (k) was 0.58, 0.46, and 0.39 with adding 1 wt%, 3 wt%, and 5 wt% talc, respectively.
Keywords:
Non-Oriented PLA Film; Annealing Temperature; Avrami Equation; Isothermal Crystallization Behavior; Talc
[References]
- Yoon CS, Ji DS, Text. Sci. Eng., 43(5), 235, 2006
- Kang KS, Shin BY, Korean Chem. Eng. Res., 46(1), 124, 2007
- Lee BI, Kim SH, Lee MS, Text. Sci. Eng., 45(5), 269, 2008
- Li HB, Huneault MA, Polymer, 48(23), 6855, 2007
- Harris AM, Lee EC, J. Appl. Polym. Sci., 107(4), 2246, 2008
- Xiao H, Yang L, Ren X, Jiang T, Yeh T, Polym. Compos., 1, 2010
- Yuksekkalayci C, Yilmazer U, Orbey N, Polym. Eng. Sci., 39(7), 1216, 1999
- Tsai CC, Wu RJ, Cheng HY, Li SC, Siao YY, Kong DC, Jang GW, Polym. Degrad. Stabil., 95, 1292, 2010
- Gohil RM, J. Appl. Polym. Sci., 52(7), 925, 1994
- Yu L, Liu HS, Xie FW, Chen L, Li XX, Polym. Eng. Sci., 48(4), 634, 2008
- Kim Y, Kim MS, Polym. Sci. Technol., 3(3), 185, 1992
- Fakirov S, Fischer EW, Hoffmann R, Schmidt GF, Polym., 18(11), 1121, 1977
- Rao YQ, Greener J, Avila-Orta CA, Hsiao BS, Blanton TN, Polymer, 49(10), 2507, 2008
- Park SD, Todo M, Arakawa K, J. Mater. Sci., 39(3), 1113, 2004
- Papageorgiou GZ, Achilias DS, Bikiaris DN, Karayannidis GP, Thermochim. Acta, 427(1-2), 117, 2005
- Lim LT, Auras R, Rubino M, Prog. Polym. Sci., 33, 820, 2008
- Kim HC, Lee H, Kim HY, Pak PK, Lee BO, Polym.(Korea), 23(1), 25, 1999
- Radhakrishnan S, Sonawane PS, J. Appl. Polym. Sci., 89(11), 2994, 2003
- Radhakrishnan S, Sonawane P, Pawaskar N, J. Appl. Polym. Sci., 93(2), 615, 2004
[Cited By]
- Kim MS, Kim G, Kim BW, Applied Chemistry for Engineering, 23(2), 169, 2012
- Kim GS, Kim MS, Kim BW, Korean Chemical Engineering Research, 50(3), 582, 2012
- Kim MS, Lee S, Applied Chemistry for Engineering, 26(3), 251, 2015
- Oh CS, Kim HG, Kim YH, Korean Journal of Materials Research, 26(2), 79, 2016
- Oh CS, Hong SH, Lee DK, Kim HG, Kim YH, Korean Journal of Materials Research, 27(2), 63, 2017
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.