Phosphate ester groups-containing ricinoleic acid-based Ca/Zn: preparation and application as novel thermal stabilizer for PVC
Phosphate ester groups-containing ricinoleic acid-based Ca/Zn: preparation and application as novel thermal stabilizer for PVC
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含磷酸酯基团的蓖麻油酸基Ca/Zn：新型PVC热稳定剂的制备及其应用
DOI：
10.1002/app.45940
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发表时间：
2018
影响因子：
3
通讯作者：
Mei Li
中科院分区：
文献类型：
--
作者：
Mei Wang;Jianchun Jiang;Jianling Xia;Shouhai Li;Mei Li
以蓖麻油酸（RA）为原料，合成了含蓖麻油酸磷酸酯基的Ca/Zn（LPPRA-Ca和LPPRA-Zn）稳定剂，并将其用作聚氯乙烯（PVC）的热稳定剂。这些热稳定剂通过傅里叶变换红外光谱、1H核磁共振和电感耦合等离子体原子发射光谱表征。通过刚果红试验、变色试验、热重分析（TGA）、热重-红外光谱（TGA-IR）、热重-质谱（TGA-MS）等方法研究了LPPRA-Ca/LPPRA-Zn、CaSt 2/ZnSt 2等稳定剂对PVC热稳定性的影响。热稳定性测试表明，LPPRA-Ca/LPPRA-Zn对PVC具有最佳的初始颜色稳定性和长期热稳定性。上级性能归因于LPPRA-Ca和LPPRA-Zn的协同效应。此外，PVC中LPPRA-Zn的锌含量较低有助于减少产品的“拉链脱氯化氢”，这有助于更好的初始热稳定性。LPPRA-Ca/LPPRA-Zn除了具有更好的稳定性能外，对PVC的增塑性能也优于其他稳定剂。提出了PVC/LPPRA-Ca/LPPRA-Zn体系的可能稳定机理。© 2017 Wiley Periodicals，Inc. J.应用聚合物Sci.2018，135，45940.
Phosphate ester groups containing ricinoleic acid‐based Ca/Zn (LPPRA‐Ca and LPPRA‐Zn) stabilizer was successfully synthesized from ricinoleic acid (RA) and used as thermal stabilizers for poly(vinyl chloride) (PVC). These thermal stabilizers were characterized by Fourier transform infrared spectrometry,1H nuclear magnetic resonance, and inductively‐coupled plasma atomic emission spectroscopy. The effects of LPPRA‐Ca/LPPRA‐Zn, CaSt2/ZnSt2, and other stabilizers on the thermal stability of PVC were studied through Congo Red test, discoloration tests, thermogravimetric analysis (TGA), TGA–infrared, and TGA–mass spectrometry. The thermal stability tests show that LPPRA‐Ca/LPPRA‐Zn displays the best initial color stability and long‐term thermal stability for PVC. The superior performance is attributed to the synergistic effect of LPPRA‐Ca and LPPRA‐Zn. Moreover, a lower Zinc content of LPPRA‐Zn in PVC helps to decrease the “zipper dehydrochlorination” of the product, which contributes to a better initial thermal stability. Except for the better stabilization performance, LPPRA‐Ca/LPPRA‐Zn also displays better plasticization performance for PVC compared with other stabilizers. A possible stabilizing mechanism of PVC/LPPRA‐Ca/LPPRA‐Zn system was presented. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2018,135, 45940.