Fabrication of PBAT/polyethylene blends mulching film via blown film extrusion process

Jung Gu Han; Seung Joon Park

Korea-Australia Rheology Journal, Vol.32, No.1, 79-86, February, 2020

DOI10.1007/s13367-020-0009-2 Export Citation

Fabrication of PBAT/polyethylene blends mulching film via blown film extrusion process

Jung Gu Han^{1, 2}, and Seung Joon Park^{3, †}

¹Graduate School of Knowledge-Based Technology & Energy, Korea Polytechnic University, Siheung 15073, Republic of Korea
²Au Co. Ltd., Pyeongtaek 17800, Republic of Korea
³Department of Chemical Engineering and Biotechnololgy, Korea Polytechnic University, Siheung 15073, Republic of Korea

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To extend the period of decomposition and property degradation of polybutylene adipate terephthalate (PBAT) mulching film for long-term use, PBAT was compounded with polyethylene mixture (LDPE: LLDPE = 15:85), calcium carbonate, and illite. PBAT mulching films were prepared using a blown film extrusion process with 80 mm diameter blowing die. To improve mechanical properties and processability of the film, crosslinking agent di-(t-butylperoxy isopropyl) benzene (BIBP) was added to PBAT compound and the effect of BIBP content on compatibility enhancement of PBAT and PE was investigated. Rheological measurements through dynamic oscillatory frequency sweep showed that the storage modulus of PBAT compound increased with the addition of BIBP and the slope of it decreased in the low frequency region because of crosslinking increase of PBAT and PE. Melt flow index of PBAT compounds decreased with increasing BIBP content. In the blown film extrusion process, the temperature of the heating zones in the extruder increased and the flow rate of the cooling air decreased with increasing content of BIBP. The highest output rate and a uniform surface morphology of mulching film were obtained because of a stable bubble with a tubular shape even at high extrusion speed with 800 ppm of BIBP. In addition, tensile strengths of both machine and transverse directions were the highest among all PBAT compounds. When the content of BIBP was higher than 800 ppm, the surface inhomogeneity of the film increased, resulting in decrease of the tensile strength in machine and transverse directions due to increased chemical crosslinking of PE and PBAT.

Keywords:mulching film;PBAT blend;compatibility;blown film extrusion;tensile strength

[References]

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[2] Chiellini E, Corti A, D’Antone S, Baciu R, Polym. Degrad. Stabil., 91, 2739 (2006)

[3] Ferreira FV, Cividanes LS, Gouveia RF, Lona LMF, Polym. Eng. Sci., 59, E7 (2019)

[4] Formela K, Zedler L, Hejna A, Tercjak A, eXPRESS Polym. Lett., 12, 24 (2018)

[5] Francesca S, Boggioni A, Righetti MC, Rond CE, Bronco S, Ciardelli F, Macromol. Mater. Eng., 300, 153 (2201)

[6] Hadad D, Geresh S, Sivan A, J. Appl. Microbiol., 98(5), 1093 (2005)

[7] Hadi NHNA, Abidin MFZ, Shuib RK, J. Eng. Sci., 14, 61 (2018)

[8] Hamada K, Kaseema M, Ko YG, Deri F, Polym. Sci. Ser. A, 56, 812 (2014)

[9] Hongdilokkul P, Keeratipinit K, Chawthai S, Hararak B, Seadan M, Suttiruengwong S, IOP Conf. Ser. Mater. Sci. Eng., 87, 012112 (2015)

[10] Hsu YC, Weir MP, Truss RW, Garvey CJ, Nicholson TM, Halley PJ, Polymer, 53(12), 2385 (2012)

[11] Kasirajan S, Ngouajio M, Agron. Sustain. Dev., 32, 501 (2012)

[12] Kijchavengkul T, Design of Biodegradable Aliphatic Aromatic Polyester Films For Agricultural Applications Using Response Surface Methodology, Ph.D. Dissertation, Michigan State University 2010.

[13] Kim TJ, Kim TH, Kim SG, Seo KH, Polym.-Korea, 40, 371 (2016)

[14] Koitabashi M, Noguchi MT, Sameshima-Yamashita Y, Hiradate S, Suzuki K, Yoshida S, Watanabe T, Shinozaki Y, Tsushima S, Kitamoto H, AMB Express, 2, 40 (2012)

[15] Kyrikou I, Briassoulis D, J. Polym. Environ., 15, 125 (2007)

[16] Lee S, Lee JW, Korea-Aust. Rheol. J., 17(2), 71 (2005)

[17] Madhu G, Bhunia H, Bajpai PK, Polym. Eng. Sci., 54(9), 2155 (2014)

[18] Muthuraj R, Misra M, Mohanty AK, J. Appl. Polym. Sci., 135, 45726 (2018)

[19] Nakayama D, Wu F, Mohanty AK, Hirai S, Misra M, ACS Omega, 3, 12412 (2018)

[20] Nishida M, Ichihara H, Watanabe H, Fukuda N, Ito H, Eng. Trans., 60, 171 (2012)

[21] Rattana A, Hemsri S, Proceedings of the Pure and Applied Chemistry International Conference, Bangkok, Thailand, 95-100 2019.

[22] Trongsatitkul T, Chaiwong S, Polym. Int., 66, 1456 (2017)

[23] Vytejckova S, Vapenka L, Hradecky J, Dobias J, Hajslova C, Vannini L, Poustka J, Polym. Test, 60, 357 (2017)

[24] Wang X, Peng S, Chen H, Yu X, Zhao X, Compos. Pt B-Eng., 173, 107028 (2019)

[25] Wiphanurat C, Hanthanon P, Kaisone T, Magaraphan R, Nampitch T, Appl. Mech. Mater., 873, 101 (2017)

[26] Yashchuk O, Portillob FS, Hermidaa EB, Proc. Mater. Sci., 1, 439 (2012)

[27] Zeng JB, Li KA, Du AK, RSC Adv., 5, 32546 (2015)

[28] Zhang R, Cai C, Liu Q, Hu S, J. Polym. Environ., 25, 1335 (2017)