Influence of Calcium Ion on Thermal Degradation and Flame Retardance Behaviour of Alginate Fiber

Abstract:

Experimental research on calcium alginate fibers thermal degradation and flame retardancy under catalysis of metallic salts was done by limiting oxygen index (LOI), scanning electron microscopy (SEM), and thermogravimetric analysis (TG) methods. LOI results show that with increasing calcium ions content, the flame retardant properties of the calcium alginate fibers improves further. The residues of calcium alginate fibers gradually retained fiber shape and on the surface of the residues the holes reduced, with the calcium ion content increasing. TG indicates temperature at maximum rate of weight loss (T-max) was clearly shifted from 246 °C for alginic acid fibers to 244°C, 236°C, 208°C, 205 °C and 203°C (SCa-1-1# calcium alginate fibers, SCa-2-2# calcium alginate fibers, SCa-3-3# calcium alginate fibers, SCa-4-4# calcium alginate fibers, SCa-5-5# calcium alginate fibers), respectively. The thermal degradation residues at 1000°C for different calcium alginate fibers are 13.7%, 16.1%, 17.2%, 18.2%, 18.4%, 19.2%, separately. Further discussion of the combustion process and flame retardant mechanism is presented.

• Periodical: Advanced Materials Research (Volumes 631-632)
• Pages: 447-451
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.631-632.447
• Online since: January 2013
• Authors: Guang Xiu Tian, Quan Ji, Feng Yu Quan, Yan Zhi Xia
• Keywords: Alginate Fiber, Calcium Ion, Flame Retardance, Thermal Degradation

References

[1] L. Fan, Y. Du, B. Zhang, Preparation and properties of alginate/carboxymethyl chitosan blend fibres, Carbohyd. Polym. 65 (2006) 447-452.

DOI: 10.1016/j.carbpol.2006.01.031

[2] C.J. Zhang, P. Zhu, H.F. Wang, Research on the properties of alginate fiber with high strength, Textile Auxiliaries. 26 (2009) 15-18.

[3] Q.S. Kong, B.B. Wang, Q. Ji, Thermal degradation and flame retardancy of calcium alginate fibres, Chin. J. Polym. Sci. 27 (2009) 807-812.

[4] J.J. Zhang, Q. Ji, Effects of divalent metal ions on the flame retardancy and pyrolysis products of alginate fibres, Polym. Degrad. Stab. 97 (2012) 1034-1040.

DOI: 10.1016/j.polymdegradstab.2012.03.004

[5] I.Y. Eom, K.H. Kim, J.Y. Kim, Characterization of primary thermal degradation features of lignocellulosic biomass after removal of inorganic metals by diverse solvents, Bioresour. Technol. 102 (2011) 3437-3444.

DOI: 10.1016/j.biortech.2010.10.056

[6] J.J. Zhang, Q. Ji, P. Zhang, Y. Z. Xia, Thermal stability and flame-retardancy mechanism of poly (ethylene terephthalate) / boehmite nanocomposites. Polym. Degrad. Stab. 95 (2010) 1211-1218.

DOI: 10.1016/j.polymdegradstab.2010.04.001

[7] L.P. Jiang, Q.S. Kong, B.B. Wang, Study on preparation of calcium alginate fiber and flame retardant properties, Flame retardant materials and technology. 4 (2008) 14.

[8] M. Müller-Hagedorn, H. Bockhorn, L. Krebs, A comparative kinetic study on the pyrolysis of three different wood species, J. Anal. Appl. Pyrol. 68–69 (2003) 231-249.

DOI: 10.1016/s0165-2370(03)00065-2

[9] X.H. Shen, Q. Ji, J.J. Zhang, Study on the pyrolysis of calcium alginate fiber, 2010 the flame retardant academic conference proceedings. (2010) 5-11.

[10] P.R. Patwardhan, J.A. Satrio, R.C. Brown, Influence of inorganic salts on the primary pyrolysis products of cellulose, Bioresour. Technol. 101 (2010) 4646-4655.

DOI: 10.1016/j.biortech.2010.01.112