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首页> 外文期刊>Journal of Applied Polymer Science >Effect of lignin esters on improving the thermal properties of poly(vinyl chloride)
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Effect of lignin esters on improving the thermal properties of poly(vinyl chloride)

机译：木质素酯对改善聚（氯乙烯）热性能的影响

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To improve the thermal stability of poly(vinyl chloride) (PVC) and the utilization of lignin (L), different L esters were added to PVC to produce the plates with enhanced thermal stabilities. The properties and structures of the L ester-PVC plates and the properties of the L esters and their mixtures with PVC were analyzed by universal mechanical testing, static thermal stability testing, thermogravimetry-Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, FTIR spectroscopy, scanning electron microscopy, and differential scanning calorimetry. The results show that L improved the thermal stability of PVC, but the mechanical properties were substantially deteriorated. Proper esterification of L improved the thermal stabilities and mechanical properties of the plates. Noncyclic anhydride acetylated L-PVC plates possessed good static and dynamic thermal stabilities and mechanical properties. The PVC plates incorporated with the L esters with a degree of esterification of around 40% exhibited the best combination properties. Maleated L-PVC plates had good dynamic thermal stability and mechanical properties but poor static thermal stability. The opposite properties were found for succinylated L-PVC plates. The differences in the properties of different L ester-PVC plates were attributed to the different abilities of L esters to capture free radicals, the crosslinking reaction between L esters and PVC, and their compatibility. Different properties of the L esters indicated their different applications. (c) 2018 Wiley Periodicals, Inc.
机译：为了改善聚（氯乙烯）（PVC）的热稳定性和木质素（L）的利用，将不同的L酯加入PVC中以产生具有增强的热稳定性的板。通过通用机械测试，静态热稳定性测试，热重稳定性 - 傅里叶变换红外（FTIR）光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，UV可见光谱，所述L Ester-PVC板及其与PVC的混合物及其与PVC的混合物进行分析。 FTIR光谱，扫描电子显微镜和差示扫描量热法。结果表明，L改善了PVC的热稳定性，但机械性能基本劣化。适当的酯化L改善了板的热稳定性和机械性能。非环酐乙酰化L-PVC板具有良好的静态和动态热稳定性和机械性能。掺入具有约40％酯化程度的L酯的PVC平板显示出最佳的组合性质。 Mateated L-PVC板具有良好的动态热稳定性和机械性能，但静态热稳定性差。发现对琥珀酰化的L-PVC板的相反性质。不同L Ester-PVC板的性质的差异归因于L酯的不同能力，以捕获自由基，L酯和PVC之间的交联反应及其相容性。 L酯的不同性质表明了它们的不同应用。 （c）2018 Wiley期刊，Inc。

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