Study of Ashes from Pachystroma longifolium Leaf as Stabilizer For PVC Exposed to γ‐Irradiation

We describe the use of Pachystroma longifolium (Nees) I. M. Johnst, commonly called canxim, as a radiolytic stabilizer of PVC exposed to γ‐irradiation. Results obtained by viscosity analysis shows that ashes from canxim leaves at the concentration of 0.7 wt% provided macromolecular radioprotective a...

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Bibliographic Details
Published in:Macromolecular symposia. 2019-02, Vol.383 (1), p.n/a
Main Authors: de Carvalho, Fernando H. A., Barbosa de Souza, Paulo Fernandes, da Silva, Lindomar A., de França, Elvis J., Araújo, Elmo S., da Silva Santos, Renata Francisca, da Silva Aquino, Kátia Aparecida
Format: Article
Language:English
Subjects:
Ashes
canxim ashes
Gamma irradiation
Heat stabilizers
Infrared analysis
Infrared spectroscopy
Macromolecules
Polyvinyl chloride
stabilizing agent
thermal degradation
Thermogravimetric analysis
Viscosity
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Summary:We describe the use of Pachystroma longifolium (Nees) I. M. Johnst, commonly called canxim, as a radiolytic stabilizer of PVC exposed to γ‐irradiation. Results obtained by viscosity analysis shows that ashes from canxim leaves at the concentration of 0.7 wt% provided macromolecular radioprotective action of 88.2% to the PVC. FT‐IR spectra analysis reveals the existence of specific intermolecular interactions between PVC and canxim ashes. Furthermore, thermogravimetric analysis shows that canxim can also be a potential thermal stabilizer for PVC matrix. Hence, we suggest that canxim have interesting applications in radiolytic and thermal stabilization of PVC.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.201800021