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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.47A [2008] >
IJC-A Vol.47A(07) [July 2008] >
| Title: | Synthesis and characterization of hydrotalcites: Potential thermal stabilizers for PVC |
| Authors: | Gupta, Savita
Agarwal, D D
Banerjee, Susanta |
| Issue Date: | Jul-2008 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl. ⁸ C08F141/06; C08K3/20 |
| Abstract: | Layered double hydroxides (LDH) are considered as a new emerging class of PVC stabilizers to replace toxic and environmentally hazardous class of heavy metals. A new series of Ca-Al-X (X=NO₃⁻, CO₃²⁻, Cl⁻, SO₄²⁻, PO₄³⁻) hydrotalcites have been prepared by hydrothermal process. The hydrotalcite particles are nanosized and have been characterized by EDX, XRD, FTIR and TGA techniques. A comparative study has been carried out to evaluate the effect of anions on PVC stabilization mechanism. A clear anionic effect is observed when they are subjected to HCl evolution studies. Color stability and UV-Vis spectroscopic studies of stabilized and unstabilized polymeric sheets support the long-term stability behavior of LDHs. A mechanistic approach indicates the role of adsorption process along with ion-exchange. \ |
| Page(s): | 1004-1008 |
| ISSN: | 0376-4710 |
| Source: | IJC-A Vol.47A(07) [July 2008]
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