Effects of ZnAl layered double hydroxide and benzimidazole derivative on the dechlorination of poly(vinyl chloride)

被引：7
作者：
Jin, Dandan [1 ]
Khanal, Santosh [1 ]
Xu, Shiai [1 ,2 ]
机构：
[1] East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China
[2] Qinghai Univ, Sch Chem Engn, Xining 810016, Peoples R China
来源：
APPLIED CLAY SCIENCE | 2021年 / 208卷
基金：
中国国家自然科学基金;
关键词：
Poly(vinyl chloride); Layered double hydroxide; Benzimidazole; Thermal degradation; ACID; NANOCOMPOSITES; STABILIZER; DEGRADATION; FACILE; WASTES; LDH; PVC; MG;
D O I：
10.1016/j.clay.2021.106114
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Layered double hydroxides (LDHs) that are generally used as thermal stabilizers of poly(vinyl chloride) (PVC) can also have catalytic effects on the dechlorination of PVC. In this study, benzimidazole derivative (OBPB) modified ZnAl-LDH (OBPB@ZLDH) was synthesized and incorporated into PVC, and the effects of OBPB@ZLDH and the physical blend of OBPB and ZLDH (OBPB/ZLDH) on the dechlorination of PVC were investigated by Congo red test and discoloration test. The results indicated that OBPB/ZLDH could improve the thermal stability of PVC. The composition and chemical structure of PVC composites after discoloration test were studied by energy dispersive X-ray spectroscopy and attenuated total internal reflectance-infrared spectroscopy. The results revealed that the products derived from the reaction between HCl released in the thermal degradation of PVC and OBPB/ZLDH could accelerate the dechlorination and oxidization of PVC at low temperature. Therefore, it has potential applications in the dechlorination of PVC to prepare hydrochars for use as alternative fuels at low temperature.
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页数：10
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