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Structures of LDHs Intercalated with Ammonia and the Thermal Stability for Poly(vinyl chloride)
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 1 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 2 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 3 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
American Journal of Analytical Chemistry·Volume 06 (2015)·Pages 334–341·Published 28 February 2015·DOI10.4236/ajac.2015.64032
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Abstract
MgAl-NH 3 LDHs (layered double hydroxides), ZnAl-LDHs and ZnAl-NH 3 LDHs with different molar ratio of Al/ammonia were synthesized by co-precipitation method. The synthetic LDHs samples were characterized by XRD, FT-IR, TGA-DTG and SEM techniques and tested by Congo red method. In addition, after PVC (Poly vinyl chloride) and DOP (Dioctylphthalate) were added to LDHs, the thermal stability for PVC was characterized by TGA-DTG. The results indicated that LDHs intercalated with ammonia improved thermal stability for PVC significantly, MgAl-NH 3 LDHs (Mg 2+ :Al 3+ : NH 3 ·H 2 O = 3:1:0.5) and ZnAl-NH 3 LDHs (Zn 2+ :Al 3+ :NH 3 ·H 2 O=2:1:1.5) showed the best thermal stability for PVC, interlayered space of LDHs became larger by intercalating ammonia.
KeywordsAmmoniaLayered Double HydroxidePoly(vinyl chloride)Thermal Stability
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