Biodegradable poly(lactic acid)-based hybrid coating materials for food packaging films with gas barrier properties

Gree Bang; Seong Woo Kim

Journal of Industrial and Engineering Chemistry, Vol.18, No.3, 1063-1068, May, 2012

DOI10.1016/j.jiec.2011.12.004 Export Citation

Biodegradable poly(lactic acid)-based hybrid coating materials for food packaging films with gas barrier properties

Gree Bang, and Seong Woo Kim^†

Department of Chemical Engineering, Kyonggi University, 94-6 Yiui-dong Yeongtong-gu, Suwon, Kyonggi-do 443-760, South Korea

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The inclusion of biodegradable poly(lactic acid) (PLA) as an organic component into the inorganic silica networks was attempted to prepare environmentally friendly hybrid coating materials with improved gas barrier properties by using sol-gel method. The PLA film obtained by melt extrusion casting process was used as a substrate for coating with prepared PLA/SiO2 hybrids. Interfacial attraction between the organic and the inorganic phases in the hybrid was promoted by employing 3-isocyanatopropyltriethoxysilane (IPTES) as a silane coupling agent. Phase interaction, morphologies, crystallization behavior, and optical transparencies for the prepared hybrids were investigated not only to evaluate the phase compatibility, but also to present an evidence for the gas permeation behavior through the hybrid coated PLA film. The incorporation of the silica component at appropriate level of content substantially increased the resistance to gas permeation. The films retained high transparency, with optical transmittance of over 92%, and showed oxygen and water vapor barrier properties improved by 69.7% and 45.7%, respectively, over those of neat PLA film. Aging process improved the barrier properties of the hybrid coatings due to created dense network structures.

Keywords:Biodegradable PLA;Sol-gel;Hybrid;Coating;Barrier properties

[References]

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Hwang T, Pu L, Kim SW, Oh YS, Nam JD, J. Membr. Sci., 345(1-2), 90 (2009)
Nam JD, Kim SW, J. Appl. Polym. Sci., 115(3), 1663 (2010)
Wu DF, Wu L, Wu LF, Xu B, Zhang YS, Zhang M, J. Polym. Sci. B: Polym. Phys., 45(9), 1100 (2007)
Chow WS, Lok SK, J. Therm. Anal. Calorim., 95, 627 (2009)
Lee JH, Park TG, Park SH, Lee DS, Lee YK, Yoon SC, Nam JD, Biomaterials., 24, 2773 (2003)
Lewitus D, McCarthy S, Ophir A, Kenig S, J. Polym. Environ., 14, 171 (2006)
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[Referenced By]

[Related Articles]

[1] Rhim J, Food Sci. Biotechnol., 16, 691 (2007)

[2] Lohfink GW, Kamal MR, Polym. Eng. Sci., 33, 1404 (1993)

[3] Blackwell AL, in: Finlayson KM (Ed.), Plastic Film Technology: High Barrier Plastic Films for Packaging, Technomic, Pennsylvania, 41 (1989)

[4] Botros MG, J. Plast. Film Sheet., 12, 195 (1996)

[5] Sorrentino A, Gorrasi G, Vittoria V, Trends Food Sci. Technol., 18, 84 (2007)

[6] Lilichenko N, Marksimov RD, Zicans J, Meri RM, Plume E, Mech. Compos.Mater., 44, 45 (2008)

[7] Amass W, Amass A, Tighe B, Polym. Int., 47, 89 (1998)

[8] Singh S, Ray SS, J. Nanosci. Nanotechnol., 7, 2596 (2007)

[9] Martin O, Averous L, Polymer, 42(14), 6209 (2001)

[10] Lin LH, Liu HJ, Yu NK, J. Appl. Polym. Sci., 106(1), 260 (2007)

[11] Iotti M, Fabbri P, Messori M, Pilati F, Fava P, J. Polym. Environ., 17, 10 (2009)

[12] Ray SS, Yanada K, Okamato M, Ueda K, J. Nanosci. Nanotechnol., 3, 503 (2003)

[13] Chang J, An YU, Sur GS, J. Polym. Sci. B: Polym. Phys., 41, 94 (2002)

[14] Yang KK, Wang XL, Wang YZ, J. Ind. Eng. Chem., 13(4), 485 (2007)

[15] Cho TW, Kim SW, J. Appl. Polym. Sci., 121, 1622 (2011)

[16] Kim SW, Korean J. Chem. Eng., 25(5), 1195 (2008)

[17] Azuta K, Tadanaga K, Minami T, J. Ceram. Soc. Jpn., 107, 293 (1999)

[18] Hwang T, Pu L, Kim SW, Oh YS, Nam JD, J. Membr. Sci., 345(1-2), 90 (2009)

[19] Nam JD, Kim SW, J. Appl. Polym. Sci., 115(3), 1663 (2010)

[20] Wu DF, Wu L, Wu LF, Xu B, Zhang YS, Zhang M, J. Polym. Sci. B: Polym. Phys., 45(9), 1100 (2007)

[21] Chow WS, Lok SK, J. Therm. Anal. Calorim., 95, 627 (2009)

[22] Lee JH, Park TG, Park SH, Lee DS, Lee YK, Yoon SC, Nam JD, Biomaterials., 24, 2773 (2003)

[23] Lewitus D, McCarthy S, Ophir A, Kenig S, J. Polym. Environ., 14, 171 (2006)

[24] Yasuniwa M, Tsubakihara S, Iura K, Ono Y, Dan Y, Takahashi K, Polymer, 47(21), 7554 (2006)

[25] SchwabHoffmann SAM, Burger A, J. Sol-Gel Sci. Technol., 19, 125 (2000)