Investigation on the thermal stability of PVC filled with hydrotalcite by the UV-vis spectroscopy.
The thermal stability of the polyvinyl chloride (PVC) filled with hydrotalcite was studied in this paper. It was found that the stability of the PVC resin mixed with organic Sn and hydrotalcite was better than that of the PVC resin mixed with organic Sn alone. The UV-vis spectra showed that under certain heat treatment conditions, the sample without hydrotalcite embodied relatively high content of the conjugated double bonds with the chain length of about 3-5, however, the content of the conjugated double bond with the chain length of about 7 was greatly increased when the hydrotalcite was filled into the PVC resin. The hydrotalcite could inhibit the thermal degradation process of PVC resin in ionic mechanism.
Zhang
Qiang
Q
Department of Chemistry, College of Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China. changchun_real@yahoo.com
Li
Hancheng
H
D000536:Aluminum Hydroxide / Q000737:chemistry*; D008276:Magnesium Hydroxide / Q000737:chemistry*; D011143:Polyvinyl Chloride / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013816:Thermodynamics; D013997:Time Factors
C010467:hydrotalcite; D000536:Aluminum Hydroxide; D011143:Polyvinyl Chloride; D008276:Magnesium Hydroxide