Author(s)

Xiaoyu Xue, Shuhua Zhang^*, Hongmei Zhang

College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China.

MgAl-NH₃ LDHs (layered double hydroxides), ZnAl-LDHs and ZnAl-NH₃ 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-NH₃ LDHs (Mg²⁺:Al³⁺: NH₃·H₂O = 3:1:0.5) and ZnAl-NH₃ LDHs (Zn²⁺:Al³⁺:NH₃·H₂O=2:1:1.5) showed the best thermal stability for PVC, interlayered space of LDHs became larger by intercalating ammonia.

Ammonia, Layered Double Hydroxide, Poly(vinyl chloride), Thermal Stability

Xue, X. , Zhang, S. and Zhang, H. (2015) Structures of LDHs Intercalated with Ammonia and the Thermal Stability for Poly(vinyl chloride). American Journal of Analytical Chemistry, 6, 334-341. doi: 10.4236/ajac.2015.64032.