자외선 노광에 의한 태양전지 백쉬트용 폴리(에틸렌 테레프탈레이트) 필름의 광분해 현상 연구

곽영준; 서지훈; 이승우; Young Jun Kwak; Ji Hun Seo; Seung Woo Lee

Polymer(Korea), Vol.42, No.3, 456-460, May, 2018

DOI10.7317/pk.2018.42.3.456 Export Citation

자외선 노광에 의한 태양전지 백쉬트용 폴리(에틸렌 테레프탈레이트) 필름의 광분해 현상 연구

Photo-degradation Behaviors of Ultra-violet Light Irradiated Poly(ethylene terephthalate) Films for Back-sheet in Solar Cells

곽영준, 서지훈, 이승우^†

영남대학교 화학공학부

Young Jun Kwak, Ji Hun Seo, and Seung Woo Lee^†

School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea

E-mail:

초록

자외선 노광시간에 따른 PET 필름의 광분해 현상을 열중량분석기, 자외선분광분석, 적외선분광분석, 수소 핵자기공명분석 및 적외선분광 이차원 상관 분석을 통하여 연구하였다. 열중량분석을 통하여 미세한 열적 안정성의 변화를 확인하였으며, 자외선분광 분석기를 이용하여 고분자 사슬의 변화로 인해 자외선 노광된 PET 필름이 320-500 nm 파장의 빛을 흡수함을 확인하였다. 자외선 노광 전후의 PET 필름의 고분자 사슬들의 변화를 관찰하였다. 적외선분광 이차원 상관 분석을 통해 PET 필름이 광분해에 의해 에스테르, perester 및 벤조산의 세 가지 광 생성물의 형성을 유도한다는 것을 확인하였으며, 이차원 상관 분석의 결과로부터 메틸렌 그룹의 산화를 포함하는 PET 필름의 광분해 메커니즘을 확인하였다. PET 필름의 광분해 현상에서 자외선에 노광된 고분자 주사슬의 메틸렌 그룹이 먼저 분해되고 테레프탈 그룹이 분해됨을 확인하였다.

Photo-degradation behaviors of poly(ethylene terephthalate) (PET) film with 25 μm by ultra-violet light (UV) irradiation were investigated using ultraviolet.visible spectroscopy, proton nuclear magnetic resonance, Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA) and two-dimensional (2D) correlation analysis. The analysis of 2D FTIR correlation spectra led to the identification of photoproducts: esters, peresters and benzoic acids. The photo-degradation of PET film induces spectral changes of both the ester linkages and the methylene groups. In addition, the spectral changes occurred in the following sequence during the photo-degradation of PET film: methylene groups → terephthalte groups.

Keywords:poly(ethylene terephthalate);photo-degradation;two-dimensional (2D) correlation analysis;Fourier transform infrared spectroscopy;photo-degradation sequence

[References]

Kim MH, Eom HS, Byun DJ, Choi KY, Polym. Korea, 40(3), 477 (2016)
Agroui K, Maallemi A, Boumaour M, Collins G, Salama M, Sol. Energy Mater. Sol. Cells, 90(15), 2509 (2006)
Jin J, Chem S, Zhang J, Polym. Degrad. Stabil., 95, 725 (2010)
Novoa FD, Miller DC, Dauskardt RH, Sol. Energy Mater. Sol. Cells, 120, 87 (2014)
Kamer A, Larson-Smith K, Pingree LSC, Dauskardt RH, Thin Solid Films, 519(6), 1907 (2011)
Bhatnagar A, Hoffman MJ, Dauskardt RH, J. Am. Ceram. Soc., 96, 585 (2000)
Wang E, Yang HE, Yen J, Chi S, Wang C, Energy Procedia, 33, 256 (2013)
Lee CO, Chae B, Kim SB, Jung YM, Lee SW, Vib. Spectrosc., 60, 142 (2012)
Oreseki G, Wallner GM, Solar Energy, 79, 612 (2005)
Jorgensen GJ, Terwilliger KM, DelCueto JA, Glick SH, Kempe MD, Pankow JW, Pern FJ, McMahon TJ, Sol. Energy Mater. Sol. Cells, 90(16), 2739 (2006)
Kim JH, Lee DS, Park TS, Kim J, Kim KU, Polym. Korea, 19(3), 353 (1995)
Park SS, Im SS, Kim DK, Polym. Korea, 17(3), 324 (1993)
Lee SW, Ree M, Park CE, Jung YK, Park CS, Jin YS, Bae DC, Polymer, 40(25), 7137 (1999)
Lee JW, Lee SW, Lee B, Ree M, Macromol. Chem. Phys., 202, 3072 (2001)
Noda I, Ozaki Y, Two-Dimensional Correlation Spectroscopy: Applications in Vibrational Spectroscopy, John Wiley & Sons Inc, New York, 2004.
Noda I, Appl. Spectrosc., 47, 1329 (1993)
Noda I, Appl. Spectrosc., 54, 994 (2000)
Jung YM, Noda I, Appl. Spectrosc. Rev., 41, 515 (2006)
The program is available from the homepage of Professor Yukihiro Osaki (http://science. kwansei.ac.jp/?ozaki).
Fechine GJM, Rabello MS, Maior RMS, Catalani LH, Polymer, 45(7), 2303 (2004)
Grossetete T, Rivaton A, Gardette JL, Hoyle CE, Ziemer M, Fagerburg DR, Clauberg H, Polymer, 41(10), 3541 (2000)
Rivaton A, Polym. Degrad. Stabil., 41, 283 (1993)
Mohammad TH, Gardette JL, Polym. Degrad. Stabil., 14, 351 (1986)
Jung YM, Polym. Sci. Technol., 21, 55 (2010)
Jung YM, Kim SB, J. Korean Chem. Soc., 47, 447 (2003)

[Referenced By]

[1] Kim MH, Eom HS, Byun DJ, Choi KY, Polym. Korea, 40(3), 477 (2016)

[2] Agroui K, Maallemi A, Boumaour M, Collins G, Salama M, Sol. Energy Mater. Sol. Cells, 90(15), 2509 (2006)

[3] Jin J, Chem S, Zhang J, Polym. Degrad. Stabil., 95, 725 (2010)

[4] Novoa FD, Miller DC, Dauskardt RH, Sol. Energy Mater. Sol. Cells, 120, 87 (2014)

[5] Kamer A, Larson-Smith K, Pingree LSC, Dauskardt RH, Thin Solid Films, 519(6), 1907 (2011)

[6] Bhatnagar A, Hoffman MJ, Dauskardt RH, J. Am. Ceram. Soc., 96, 585 (2000)

[7] Wang E, Yang HE, Yen J, Chi S, Wang C, Energy Procedia, 33, 256 (2013)

[8] Lee CO, Chae B, Kim SB, Jung YM, Lee SW, Vib. Spectrosc., 60, 142 (2012)

[9] Oreseki G, Wallner GM, Solar Energy, 79, 612 (2005)

[10] Jorgensen GJ, Terwilliger KM, DelCueto JA, Glick SH, Kempe MD, Pankow JW, Pern FJ, McMahon TJ, Sol. Energy Mater. Sol. Cells, 90(16), 2739 (2006)

[11] Kim JH, Lee DS, Park TS, Kim J, Kim KU, Polym. Korea, 19(3), 353 (1995)

[12] Park SS, Im SS, Kim DK, Polym. Korea, 17(3), 324 (1993)

[13] Lee SW, Ree M, Park CE, Jung YK, Park CS, Jin YS, Bae DC, Polymer, 40(25), 7137 (1999)

[14] Lee JW, Lee SW, Lee B, Ree M, Macromol. Chem. Phys., 202, 3072 (2001)

[15] Noda I, Ozaki Y, Two-Dimensional Correlation Spectroscopy: Applications in Vibrational Spectroscopy, John Wiley & Sons Inc, New York, 2004.

[16] Noda I, Appl. Spectrosc., 47, 1329 (1993)

[17] Noda I, Appl. Spectrosc., 54, 994 (2000)

[18] Jung YM, Noda I, Appl. Spectrosc. Rev., 41, 515 (2006)

[19] The program is available from the homepage of Professor Yukihiro Osaki (http://science. kwansei.ac.jp/?ozaki).

[20] Fechine GJM, Rabello MS, Maior RMS, Catalani LH, Polymer, 45(7), 2303 (2004)

[21] Grossetete T, Rivaton A, Gardette JL, Hoyle CE, Ziemer M, Fagerburg DR, Clauberg H, Polymer, 41(10), 3541 (2000)

[22] Rivaton A, Polym. Degrad. Stabil., 41, 283 (1993)

[23] Mohammad TH, Gardette JL, Polym. Degrad. Stabil., 14, 351 (1986)

[24] Jung YM, Polym. Sci. Technol., 21, 55 (2010)

[25] Jung YM, Kim SB, J. Korean Chem. Soc., 47, 447 (2003)