Synthesis of the complex of lanthanum (III) with N-(2-amino ethyl) maleamic acid radical and its application to PVC as thermal stabilizer
| Autor: | Kan-she Li, Yao-dong Liang, Xiang-rong Liu, Xiao-bin Wang, Li Miao |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Thermogravimetric analysis
Polymers and Plastics chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Chloride 0104 chemical sciences chemistry.chemical_compound Polyvinyl chloride chemistry Mechanics of Materials Amide Polymer chemistry Materials Chemistry medicine Lanthanum Thermal stability Chelation Carboxylate 0210 nano-technology medicine.drug |
| Zdroj: | Polymer Degradation and Stability. 124:87-94 |
| ISSN: | 0141-3910 |
| DOI: | 10.1016/j.polymdegradstab.2015.12.002 |
| Popis: | The complex (LaL 3 ) of lanthanum (III) with N-(2-amino ethyl) maleamic acid radical (L − ) was synthesized and characterized by Fourier infrared spectrum (FT-IR), elemental analysis and melting point measurements. The complex LaL 3 was a chelate, in which lanthanum (III) ion was coordinated with the carboxylate oxygen and amide nitrogen atoms of N-(2-amino ethyl) maleamic acid radical (L − ). The stabilization effect of LaL 3 as a thermal stabilizer on polyvinyl chloride (PVC) was evaluated by static thermal stability test, ultraviolet–visible spectrum (UV–vis), FT-IR and thermogravimetric analysis (TGA). The results showed that the addition of LaL 3 as thermal stabilizer could significantly enhance static stability time of PVC. Compared with the TG of pure PVC and LaL 3 /PVC, within the range of 200–300 °C, the degradation rate of pure PVC was significantly accelerated, whereas the degradation rate of the PVC added LaL 3 stabilizer decreased obviously. The stabilizing efficiency of PVC improved by the addition of LaL 3 is partially attributed by the formation of coordinate bonds between lanthanum (III) and chloride atoms in PVC main chain. |
| Databáze: | OpenAIRE |
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