Abstract
A monolayer blown film, based on low-density polyethylene (LDPE)/polyamide 6(PA6)/nanoclay composite, is developed with enhanced barrier and mechanical properties. This is an attempt to develop specific monolayer film with comparable performance properties as that of multilayer packaging film, which poses considerable environmental challenge in terms of recycling. Blown film processability of neat PA6 is difficult due to its low melt strength characteristics. In order to mitigate this processing difficulty, LDPE was used as the matrix and PA6 as the minor phase. Two base compositions 80/20 and 65/35 (LDPE:PA6) with a constant 0.5 phr compatibilizer were used in this study. Based on these two base compositions, nanocomposites having 0.5, 1, 2 and 4 phr nanoclay were prepared for blown film processing. The nanocomposites were characterized by melt flow index (MFI), differential scanning calorimetry, small angle X-ray scattering (SAXS), wide-angle X-ray diffraction and scanning electron microscopy. Nanoclay helped in improving the compatibility of both the polymers. Morphological characterization of blends indicated predominantly exfoliated structure formation. In order to understand the effect of critical parameters, optimization was carried out using Taguchi method with the help of a L16 orthogonal array, considering four input parameters, such as, base compositions, nanoclay concentrations, nip roll speeds and blow up ratio. The parametric optimization study was performed against oxygen transmission rate, water vapour transmission rate and tensile strength of blown films. It was found that the barrier and mechanical property of the films are greatly affected by nip roll speed. Corresponding seal strength and transparency of prepared film showed values that are suitable for packaging application.
Similar content being viewed by others
References
Wagner J 2009 Multilayer flexible packaging: technology and applications for the food, personal care, and over-the-counter pharmaceutical industries. (Oxford: Elsevier Science) 1
Ganpule H K and Khomami B 1999 J. Nonnewton Fluid Mech. 81 27
Morris B A 2013 J. Plast Film Sheeting 29 189
Tartakowski Z 2010 Resour. Conserv. Recycl. 55 409
Mallick S, Kar P and Khatua B B 2012 J. Appl. Polym. Sci. 123 1801
Brydson J A 1999 Plastics materials, 7th ed. (Oxford: Elsevier) 7 p 1
Liesl K Massey 2003 Permeability properties of plastics and elastomers (Plastic Design Library, New York) 2nd ed. p. 1
Huang C-H, Wu J-S and Huang C-C 2004 Polym. Int. 53 2099
Ghaneh-Fard A 1999 J. Plast. Film Sheeting 15 194
Fatahi S, Ajji A and Lafleur P G 2005 J. Plast. Film Sheeting 21 281
Auksornkul S, Soontaranon S, Kaewhan C and Prasassarakich P 2018 J. Plast Film Sheeting 34 27
La Mantia F P, Canfora L and Dintcheva N T 2005 Polym. Eng. Sci. 45 1297
Lopez-Barron C R, Robledo-Ortiz J R, Rodrigue D and Gonzalez Nunez R 2007 J. Plast Film Sheeting 23 149
Kamal M R, Jinnah I A and Utracki L A 1984 Polym. Eng. Sci. 24 1337
Adame D and Beall G W 2009 Appl. Clay Sci. 42 545
Hemmati M, Shariatpanahi H, Fereidoon A, Aalaie J and Ahangari M G 2012 Polym. Plast Technol. Eng. 51 1186
Ammala A, Pas S J, Lawrence K A, Stark R, Webb R and Hill A J 2008 J. Mater. Chem. 18 911
Chen H Y, Bishop M T, Landes B G and Chum S P 2006 J. Appl. Polym. Sci. 101 898
Butler T I and Patel R 1993 J. Plast Film Sheeting 9 121
Maalihan R D and Pajarito B B 2016 J. Plast Film Sheeting 32 124
Galooyak S S, Dabir B, Nazarbeygi A E, Moeini A and Berahman B 2011 Pet Sci. Technol. 29 1110
Li T, Turng L-S, Gong S and Erlacher K 2006 Polym. Eng. Sci. 46 1419
Mohan T P and Kanny K 2013 J. Mater. Sci. 48 8292
Kashyap M J and Ghosh A K 2013 J. Plast Film Sheeting 29 228
Devaux E, Bourbigot S and El Achari A 2002 J. Appl. Polym. Sci. 86 2416
Miri V, Elkoun S, Peurton F, Vanmansart C, Lefebvre J M, Krawczak P et al 2008 Macromolecules 41 9234
Ma C C M, Kuo C T, Kuan H C, Vanmansarat C, Lefebvre J M, Krawcrzah P et al 2003 J. Appl. Polym. Sci. 88 1
Aït-Kadi A, Marchal P, Choplin L, Chrissemant A S and Bousmina M 2002 Can. J. Chem. Eng. 80 1166
Singh P and Ghosh A K 2014 Mater. Des. 55 137
Fereydoon M, Tabatabaei S H and Ajji A 2015 J. Plast Film Sheeting 31 45
Fasihi M and Abolghasemi M R 2012 J. Appl. Polym. Sci. 125 E2
Dadbin S, Noferesti M and Frounchi M 2008 Macromol. Symp. 274 22
Garofalo E, Fariello M L and Di Maio L 2013 Eur. Polym. J. 49 80
Acknowledgements
We thank the Ministry of Human Resource Development (MHRD), India, for providing financial assistance to Purkayastha S. We thank IIT Delhi for providing the laboratory facilities. We would also like to thank Indian Institute of Packaging, Mumbai, for providing the characterization facilities.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Purkayastha, S., Dutta, A., Ghosh, A.K. et al. Processability and performance property correlation for LDPE/PA6-based nanocomposite and its monolayer blown film for packaging application. Bull Mater Sci 45, 47 (2022). https://doi.org/10.1007/s12034-021-02627-8
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s12034-021-02627-8