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Goncalves A. R., Luz S. M., Evaluation of the Removal of Heavy Metals by Kraft Lignin Considering Coprecipitation, Solubility and Coordination Capacity of the Ions Tested, 6th Brazilian Symposium on the Chemistry of Lignin and Other Wood Components, Guaratingueta-SP, Brazil, 2001, Proceedings pp. 266-269.

has been cited by the following article:

  • TITLE: Evaluation of Lignin-Calcium Complex as Thermal Stabilizer for Poly Vinyl Chloride

    AUTHORS: Hussein Ali Shnawa

    KEYWORDS: Lignin, Modification of Lignin, Poly (Vinyl Chloride), Thermal Degradation, IR Study

    JOURNAL NAME: Materials Sciences and Applications, Vol.2 No.6, June 24, 2011

    ABSTRACT: Chemical modification of lignin was carried out by reacted it with HI acid, then the modified lignin treated with calcium hydroxide to prepare calcium-lignin chelating complex, this derivative was examined as thermal stabilizer for PVC, thermal degradation of PVC neat as blank and containing three weight percents (1, 2, and 4) into polymer was accelerated by heat treatment at 190°C for 2 hr. then PVC films were casting from THF solvent with thickness 0.03 mm. Thermal stabilization activity of this derivative was investigated by using infrared spectroscopy, according to the results obtained calcium-lignin complex have suitable activity to increased PVC stability at low concentration depending on it’s ability to reaction with HCl as well as the chemical structure of lignin that contain phenolic properties.