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Synergistic effect of adipic acid pentaerythritol ester with calcium and zinc stearates on poly(vinyl chloride) thermal stability
Author(s) -
Zhang Jun,
Li Degang,
Fu Ming,
Zhang Yali,
Zhang Lipeng,
Zhao Pingping
Publication year - 2016
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.21436
Subject(s) - pentaerythritol , thermogravimetric analysis , adipic acid , thermal stability , calcium stearate , zinc , fourier transform infrared spectroscopy , vinyl chloride , materials science , polyvinyl chloride , polymer chemistry , nuclear chemistry , chemistry , organic chemistry , chemical engineering , polymer , composite material , raw material , fire retardant , engineering , copolymer
Adipic acid pentaerythritol ester (AAPE) was synthesized in this study and confirmed by Fourier transform infrared spectroscopy (FTIR). The synergistic effect of AAPE with calcium and zinc stearates (CaSt 2 /ZnSt 2 ) on poly(vinyl chloride) (PVC) thermal stability was evaluated by the conductivity test, thermal aging test, and thermogravimetric analysis (TGA). The results showed that the addition of CaSt 2 /ZnSt 2 combined with AAPE could improve color stability and long‐term thermal stability of PVC. The results of UV‐visible spectroscopy showed that CaSt 2 /ZnSt 2 /AAPE could prevent the generation of conjugated double bonds. The possible mechanism is that AAPE can chelate ZnCl 2 to prevent the thermal degradation via dehydrochlorination. The contrast tests showed that the synergistic effect of AAPE and CaSt 2 /ZnSt 2 is more obvious than that of polyethylene (PE) and CaSt 2 /ZnSt 2 , which may be attributed to the lower melting point of AAPE and the better compatibility with PVC. J. VINYL ADDIT. TECHNOL., 22:293–299, 2016. © 2014 Society of Plastics Engineers