Preparation of Biodegradable Polymer Nanocomposites and Vermiculite Clay by Melt Intercalation Technique

Abstract:

The consumption of plastic products over the years has been producing large numbers of waste material, which accumulate by landfill generating considerable environmental problems. Among biodegradable polymers, there is the PHB (poly-3-hydroxybutyrate), which has attracted more attention once it is obtained from renewable sources. This study aimed to prepare biodegradable nanocomposites by melt intercalation of PHB polymer in the natural vermiculite clay, in the ratios of 1, 3 and 6 wt%. The nanocomposites were obtained in an internal mixer coupled to a torque rheometer by Haake-Blucher, operating at 170°C, 50 rpm for 10 minutes. The material was triturated and then films were molded by compression under the conditions: 3 tons at 170°C for 3 minutes. The films were characterized by X-ray diffraction (XRD) and Infrared (FTIR). These analyzes were used to evaluate the intercalation and / or exfoliation of nanocomposites. In general, results indicated changes in structure as a function of clay content employed in the systems of PHB / vermiculite.

• Periodical: Materials Science Forum (Volumes 775-776)
• Pages: 357-362
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.775-776.357
• Online since: January 2014
• Authors: Renata Barbosa, Tatianny Soares Alves, Dayanne Diniz Souza Morais, Laura Hecker Carvalho, Osanildo Damião Pereira
• Keywords: Biodegradable, Organoclay, Polymeric Nanocomposites

References

[1] M. Kumar, S. Mohanty, S. K Nayak and M. R Parvaiz: Bioresource Technology Vol. 101 (21) (2010).

[2] S.M.M. Franchetti and J.C. Marconato: Quimica Nova Vol. 29 (4) (2006), p.811.

[3] S. Karlsson and A.C. Albertson: Polymer Engineering and Science Vol. 38 (1998), p.1251.

[4] S.S. Ray and M. Bousmina: Progress in Materials Science Vol. 50 (8) (2005).

[5] M.L.C. Machado: Polímeros: Ciência e Tecnologia Vol. 20 (1), (2010), p.65.

[6] G.J.M. Fechine: Plástico Moderno Vol. 423 (2010).

[7] H.W. Park, W.K. Lee, C.Y. Park, W.J. Cho and C. S Ha: Journal of Materials Science Vol. 38 (2003), p.909.

[8] V.P. Cyras and L.B. Manfredi: Carbohydrate Polymer Vol. 73 (2008), p.55.

[9] P. Dubois and M. Alexandre: Materials Science and Engineering Vol. 28 (2000), p.1.

[10] R. Barbosa, Estudo da modificação de argilas bentoníticas para aplicação em nanocompósitos de polietileno Doutorado. (Tese). Campina Grande, 2009. Universidade Federal de Campina Grande (UFCG). (PB).

DOI: 10.24873/j.rpemd.2021.10.846

[11] P.C. Le Baron, Z. Wang and T.J. Pinnavaia: Appl. Clay Sci. (1999), p.15.

[12] E.V.D. Gomes, L.L.Y. Visconte and E.B.A.V. Pacheco: Cerâmica Vol. 56 (2010), p.44.

[13] M. Lai: Polymer International Vol. 53 (2004), p.1479.

[14] S. Singh, A.K. Mohanty, T. Sugie, Y. Takai and H. Hamada: Composites Part A Vol. 39 (5) (2008), p.875.