Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/doi/10.4322/polimeros.2014.011
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Properties of Recycled High Density Polyethylene and Coffee Dregs Composites

Cestari, Sibele Piedade; Mendes, Luis C.; Silva, Daniela França da; Chimanowsky Junior, Jorge Pereira; Altstädt, Volker; Demchuk, Vitaly; Lang, Anneliese; Leonhardt, Rodrigo Gheno; Keller, Jan-Hendrik

Downloads: 0
Views: 1004

Resumo

Composites of recycled high density polyethylene (HDPE-R) and coffee dregs (COFD) were elaborated. The blends were made at the proportions of 100-0, 90-10, 80-20, 70-30, 60-40, 50-50 and 40-60% polymer-filler ratio. The materials were evaluated through scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetry/derivative thermogravimetry (TGA), and compressive resistance test. The compounding was done using a two-stage co-kneader system extruder, and then cylindrical specimens were injection molded. All composites had a fine dispersion of the COFD into the polymeric matrix. The composites degraded in two steps. The first one was in a temperature lower than the neat HDPE, but higher than the average processing temperature of the polymer. The melting temperature and the degree of crystallinity of the composites resulted similar to the neat HDPE ones. The compressive moduli of the composites resulted similar to the neat polymer one. The results show that these composites have interesting properties as a building material.

Palavras-chave

Composites, mechanical properties, thermal properties, recycling, HDPE

References



1. Solow, R. M. - Am. Econ. Rev. 64, p.1 (1974).

2. Brown, L. R. - “Eco-Economy: Building an Economy for the Earth”, Earthscan (2001).

3. Penteado, H. - “A mudança dos paradigmas e o mito do crescimento”, Jornal Valor, São Paulo (2010).

4. Santi, C. R. D.; Correa, A. C. & Manrich, S. - Polímeros, 16, p.123 (2006). http://dx.doi.org/10.1590/S0104- 14282006000200012

5. Martins, A. F.; Suarez, J. C. M. & Mano, E. B. - Polímeros, 9, p.27 (1999). http://dx.doi.org/10.1590/ S0104-14281999000400005

6. Conroy, A.; Halliwell, S. & Reynolds, T. - Compos. Part A-Appl. S., 37, p.1216 (2006).

7. Afrifah, K.; Hickok, R. & Matuana, L. - Compos. Sci. Technol., 70, p.167 (2010). http://dx.doi.org/10.1016/j. compscitech.2009.09.019

8. Mendes, L. C. & Cestari, S. P. - Mater. Sci. Appl., 2, p.1331 (2011).

9. Cestari, S. P. - “Papel sintético sustentável para embalagem”, Masters dissertation, Universidade Federal do Rio de Janeiro, Brasil (2010).

10. Ndlovu, S.; Van Reenen, A. & Luyt, A. - Compos. Part A-Appl. S., 51, p.80 (2013).

11. Cestari, S. P. & Mendes, L. C. - J. Therm. Anal. Calorim., 114, p.1 (2013). http://dx.doi.org/10.1007/ s10973-013-3121-4

12. Aji, I. S.; Zainudin, E. S.; Khalina, A.; Sapuan, S. M. & Khairul, M. D. - J. Therm. Anal. Calorim., 109, p.893 (2012). http://dx.doi.org/10.1007/s10973-011-1807-z

13. Kim, H.-S.; Yang, H.-S.; Kim, H.-J. & Park, H.-J. - J. Therm. Anal. Calorim., 76, p.395 (2004).

14. Furukawa, T.; Sato, H.; Kita, Y.; Matsukawa, K.; Yamaguchi, H.; Ochiai, S.; Siesler, H. W. & Ozaki, Y. - Polym. J., 38, p.1127 (2006). http://dx.doi.org/10.1295/polymj.PJ2006056

15. Mendez, J. M. - “Optimisation of the Mechanical Properties of HDPE/PP Blends and their Recyclable Composites”, Doctor of philosophy, Cochin University of Science and technology, Kochi, India (2009).

16. Souza, A. & Demarquette, N. - Polymer, 43, p.1313 (2002).
5883719d7f8c9d0a0c8b49a9 polimeros Articles
Links & Downloads

Polímeros: Ciência e Tecnologia

Share this page
Page Sections