Abstract In this work, the stabilizing effect of softwood and hardwood Kraft lignins on nitrocellulose (NC) was assessed. Four samples containing 3% of stabilizer were prepared. DSC and FTIR analyses have been used to check the compatibility of the different systems. The effect of these organic compounds on the stability of NC has been investigated using the conventional stability tests (Vacuum Stability Test (VST) and Bergmann-Jung (BJ)) and the kinetic modeling. The obtained results via VST and BJ suggested that the prepared mixtures are stable. Furthermore, Kinetic modeling, performed by isoconversional methods based on DSC data, revealed that the new stabilizers displayed excellent thermal stability. The reactivity between different Kraft lignins and NOx has been well highlighted by means of FTIR and TGA techniques as well, confirming the potential of these environmentally friendly substances as promising stabilizers for NC-based propellants.

中文翻译：

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硫酸盐木质素对硝化纤维素稳定性和热分解动力学的影响

摘要 在这项工作中，评估了软木和硬木硫酸盐木质素对硝化纤维素 (NC) 的稳定作用。制备了四个含有 3% 稳定剂的样品。DSC 和 FTIR 分析已用于检查不同系统的兼容性。已使用常规稳定性试验（真空稳定性试验 (VST) 和 Bergmann-Jung (BJ)）和动力学模型研究了这些有机化合物对 NC 稳定性的影响。通过 VST 和 BJ 获得的结果表明制备的混合物是稳定的。此外，基于 DSC 数据通过等转化方法进行的动力学建模表明，新型稳定剂显示出优异的热稳定性。不同硫酸盐木质素和 NOx 之间的反应性也通过 FTIR 和 TGA 技术得到了很好的强调，