Preparation and Properties of Polybenzoxazine/Lignin Alloy

Abstract:

Polymer alloys of polybenzoxazine and lignin were prepared by mixing benzoxazine and lignin, followed by curing. The ring-opening polymerization of benzoxazine in the presence of lignin was investigated by differential scanning calorimetry. It was found that lignin accelerates the ring-opening polymerization of benzoxazine. Polybenzoxazine/lignin alloy films were prepared by varying the weight ratio of benzoxazine and lignin. Transparent alloy film was obtained up to 2 wt. % content of lignin, but phase separation was observed at higher content of lignin. Thermal stability of the alloy films was examined by thermogravimetric analysis from 40 °C to 850 °C. The alloy film with 10 wt. % lignin showed highest onset of degradation temperature. Moreover, char yield of alloy films was increased with increasing the lignin content, suggesting higher flame retardancy of the alloy films than the pristine polybenzoxazine.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 571-577
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.571
• Online since: November 2012
• Authors: H.M. Emranul Haque*, Zahidul Islam, Takehiro Kawauchi, Tsutomu Takeichi
• Keywords: Lignin, Polybenzoxazine, Polymer Alloy, Thermal Property

References

[1] T. Takeichi, T. Kano and T. Agag: Polymer Vol. 46 (2005), p.12172

[2] T. Takeichi and T. Agag: High Perform. Polym. Vol. 18 (2006), p.777

[3] N. N. Ghosh, B. Kiskan and Y. Yagci: Prog. Polym. Sci. Vol. 32 (2007), p.1344

[4] T. Takeichi, T. Kawauchi and T. Agag: Polym. J. Vol. 40 (2008), p.1121

[5] Y. Yagci, B. Kishan and N. N. Ghosh: J. Polym. Sci.: Part A: Polym. Chem. Vol. 47 (2009), p.5565

[6] S. Sahoo, M.O. Seydibeyoglu, A.K. Mohanty and M. Misra: Biomass Bioenergy Vol. 35 (2011), p.4230

[7] M. Funaoka, M. Matsubara, N. Seki and S. Fukatsu: Biotechnol. Bioeng. Vol. 46 (1995), p.545

[8] H. Nonaka and M. Funaoka: Biomass Bioenergy Vol. 35 (2011), p.1607

[9] D. Fan, P.R. Chang, N. Lin, J. Yu and J. Huang: Iran. Polym. J. Vol. 20 (2011), p.3

[10] P.C. Rodrigues, M. Muraro, C.M. Garcia, G.P. Souza, M. Abbate, W.H. Schreiner and M.A.B. Gomes: Eur. Polym. J. Vol. 37 (2001), p.2217

[11] C.I. Simionescu, V. Rusan, M.M. Macoveanu, G. Cazacu, R. Lipsa, C. Vasile, A. Stoleriu and A. Ioanid: Compos. Sci. Technol. Vol. 48 (1993), p.317

DOI: 10.1016/0266-3538(93)90149-b

[12] C. Ciobanu, M. Ungureanu, L. Ignat, D. Ungureanu and V.I. Popa: Ind. Crop. Prod. Vol. 20 (2004), p.231

[13] E. Corradini, E.A.G. Pineda and A.A.W. Hechenleitner: Polym. Degrad. Stab. Vol. 66 (1999), p.199

[14] S. Rimdusit and H. Ishida: Polym. Vol. 41 (2000), p.7941