Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.1590/0104-1428.20230059
Polímeros: Ciência e Tecnologia
Original Article

Effect of process parameters on the properties of LDPE/sepiolite composites

Priscila da Silva e Souza; Ana Maria Furtado de Sousa; Ana Lúcia Nazareth da Silva

http://dx.doi.org/10.1590/0104-1428.20230059 Polímeros: Ciência e Tecnologia, vol.34, n2, e20240015, 2024
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Abstract

This study examines the effect of processing parameters and reactive extrusion on the mechanical, thermal, morphological, and rheological properties of low-density polyethylene (LDPE) and sepiolite composites (LDPE/sepiolite: 95/5 wt/wt) produced by in situ reactive extrusion in a twin-screw extruder. Using a design of experiments, the contribution of the factors reverse mixing elements (RE), maleic anhydride (MA), and dicumyl peroxide (DCP) was determined. The results showed that a better interaction between LDPE and sepiolite phases occurred when reactive extrusion was carried out, leading to a satisfactory balance between mechanical properties and thermal stability behavior. The rheology analysis revealed that a more pronounced solid-like behavior was achieved in the composite prepared by reactive extrusion and in the presence of the filler. The SEM micrographs showed the appearance of a network-like morphology in the composite processed in the presence of additives and sepiolite filler.

 

Keywords

low density polyethylene, sepiolite, cross-linking, reactive extrusion, composites

References

1 Dintcheva, N. T., Alessi, S., Arrigo, R., Przybytniak, G., & Spadaro, G. (2012). Influence of the e-beam irradiation and photo-oxidation aging on the structure and properties of LDPE-OMMT nanocomposite films. Radiation Physics and Chemistry, 81(4), 432-436. http://doi.org/10.1016/j.radphyschem.2011.12.018.

2 Liang, J. (2019). Melt strength and drawability of HDPE, LDPE and HDPE/LDPE blends. Polymer Testing, 73, 433-438. http://doi.org/10.1016/j.polymertesting.2018.12.007.

3 Zhang, Q., Li, S., Hu, X., Wang, P., Zeng, J., Wang, X., & Wang, Y. (2017). Structure, morphology, and properties of LDPE/sepiolite nanofiber nanocomposite. Polymers for Advanced Technologies, 28(8), 958-964. http://doi.org/10.1002/pat.3703.

4 Anh, T. T., Fréchette, M., David, É., Veillette, R., & Moraille, P. (2018). Effect of POSS-grafted titanium dioxide on the electrical and thermal properties of LDPE/TiO2 polymer nanocomposite. Journal of Applied Polymer Science, 135(14), 46095. http://doi.org/10.1002/app.46095.

5 Tabatabaei-Yazdi, Z., & Mehdipour-Ataei, S. (2015). Poly(ether-imide) and related sepiolite nanocomposites: investigation of physical, thermal, and mechanical properties. Polymers for Advanced Technologies, 26(4), 308-314. http://doi.org/10.1002/pat.3444.

6 Li, W., Li, S., Cheng, Z., Hu, X., Yang, W., & Yao, Y. (2019). The effect of flame retardant-modified sepiolite nanofibers on thermal degradation and fire retardancy of low-density polyethylene. Journal of Thermal Analysis and Calorimetry, 138(2), 1011-1019. http://doi.org/10.1007/s10973-019-08162-3.

7 Delva, L., Ragaert, K., Degrieck, J., & Cardon, L. (2014). The effect of multiple extrusions on the properties of montmorillonite filled polypropylene. Polymers, 6(12), 2912-2927. http://doi.org/10.3390/polym6122912.

8 Sarifuddin, N., Ismail, H., & Ahmad, Z. (2014). Influence of halloysite nanotubes hybridized with kenaf core fibers on the physical and mechanical properties of low density polyethylene/thermoplastic sago starch blends. Polymer-Plastics Technology and Engineering, 53(2), 107-115. http://doi.org/10.1080/03602559.2013.820758.

9 Ballesteros, A., Laguna-Gutierrez, E., Puertas, M. L., Esteban-Cubillo, A., Santaren, J., & Rodriguez-Perez, M. A. (2021). Polystyrene/sepiolites nanocomposite foams. relationship between composition, particle dispersion, extensional rheology, and cellular structure. Materials Today. Communications, 29, 102850. http://doi.org/10.1016/j.mtcomm.2021.102850.

10 Julinawati, W., Wirjosentono, B., Eddiyanto, E., Gea, S., & Ramli, I. (2020). Morphology and thermal properties of polypropylene-montmorillonite nanocomposite using modified bentonite of Bener Meriah Aceh. Journal of Natural, 20(3), 56-60. http://doi.org/10.24815/jn.v20i3.15073.

11 Rathnam, V., Kichu, A., Dutta, N., Maji, T. K., & Devi, N. (2022). Influence of organically modified nanoclay and TiO2 nanopowder on the properties of Azadirachta indica wood flour-reinforced high-density polyethylene, low-density polyethylene, polypropylene, and polyvinyl chloride nanocomposite. Journal of Thermoplastic Composite Materials, 35(10), 1468-1487. http://doi.org/10.1177/0892705720935968.

12 Singh, V. P., Vimal, K. K., Sharma, S., Kapur, G. S., & Choudhary, V. (2017). Polyethylene/sepiolite clay nanocomposites: effect of clay content, compatibilizer polarity, and molar mass on viscoelastic and dynamic mechanical properties. Journal of Applied Polymer Science, 134(33), 45197. http://doi.org/10.1002/app.45197.

13 Farshchi, N., & Ostad, Y. K. (2020). Sepiolite as a nanofiller to improve mechanical and thermal behavior of recycled high-density polyethylene. Progress in Rubber, Plastics and Recycling Technology, 36(3), 185-195. http://doi.org/10.1177/1477760620918596.

14 Chen, H., Zheng, M., Sun, H., & Jia, Q. (2007). Characterization and properties of sepiolite/polyurethane nanocomposites. Materials Science and Engineering A, 445–446, 725-730. http://doi.org/10.1016/j.msea.2006.10.008.

15 Ajmal, A. W., Masood, F., & Yasin, T. (2018). Influence of sepiolite on thermal, mechanical and biodegradation properties of poly-3-hydroxybutyrate-co-3-hydroxyvalerate nanocomposites. Applied Clay Science, 156, 11-19. http://doi.org/10.1016/j.clay.2018.01.010.

16 Rehman, S. U., Javaid, S., Shahid, M., Gul, I. H., Rashid, B., Szczepanski, C. R., Naveed, M., & Curley, S. J. (2022). Polystyrene-sepiolite clay nanocomposites with enhanced mechanical and thermal properties. Polymers, 14(17), 3576. http://doi.org/10.3390/polym14173576. PMid:36080650.

17 Nuñes, F. C., Ribeiro, K. C., Martini, F. A., Barrioni, B. R., Santos, J. P. F., & Carvalho, B. M. (2021). PBAT/PLA/cellulose nanocrystals biocomposites compatibilized with polyethylene grafted maleic anhydride (PE-g-MA). Journal of Applied Polymer Science, 138(45), 51342. http://doi.org/10.1002/app.51342.

18 García, N., Hoyos, M., Guzmán, J., & Tiemblo, P. (2009). Comparing the effect of nanofillers as thermal stabilizers in low density polyethylene. Polymer Degradation & Stability, 94(1), 39-48. http://doi.org/10.1016/j.polymdegradstab.2008.10.011.

19 Almond, J., Sugumaar, P., Wenzel, M. N., Hill, G., & Wallis, C. (2020). Determination of the carbonyl index of polyethylene and polypropylene using specified area under band methodology with ATR-FTIR spectroscopy. E-Polymers, 20(1), 369-381. http://doi.org/10.1515/epoly-2020-0041.

20 Gulmine, J. V., Janissek, P. R., Heise, H. M., & Akcelrud, L. (2002). Polyethylene characterization by FTIR. Polymer Testing, 21(5), 557-563. http://doi.org/10.1016/S0142-9418(01)00124-6.

21 Jiang, L., Zhang, J., & Wolcott, M. P. (2007). Comparison of polylactide/nano-sized calcium carbonate and polylactide/montmorillonite composites: reinforcing effects and toughening mechanisms. Polymer, 48(26), 7632-7644. http://doi.org/10.1016/j.polymer.2007.11.001.

22 Ogorodova, L. P., Kiseleva, I. A., Vigasina, M. F., Kabalov, Y. K., Grishchenko, R. O., & Mel’Chakova, L. V. (2014). Natural sepiolite: enthalpies of dehydration, dehydroxylation, and formation derived from thermochemical studies. The American Mineralogist, 99(11–12), 2369-2373. http://doi.org/10.2138/am-2014-4804.

23 Elbourne, A., Truong, V. K., Cheeseman, S., Rajapaksha, P., Gangadoo, S., Chapman, J., & Crawford, R. J. (2019). The use of nanomaterials for the mitigation of pathogenic biofilm formation. In V. Gurtler, A. S. Ball, & S. Soni (Eds.), Methods in Microbiology: Nanotechnology (pp. 61-92). UK: Academic Press. http://doi.org/10.1016/bs.mim.2019.04.002

24 Almeida, K. M., Sousa, A. M. F., Souza, F. G., Jr., Bertolino, L. C., Rocha, M. C. G., Peres, A. C. C., Ossig, A., & Silva, A. L. N. (2017). Melt rheology and morphology of binary and ternary PS/HIPS blends for blown film extrusion applications. Polymer Testing, 64, 277-286. http://doi.org/10.1016/j.polymertesting.2017.10.016.
 

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