Abstract This is the first article, presenting the use of nonaccelerating nodes of thermal degradation of biomaterials to visualize thermogravimetric-reactivity. The transitions of nonaccelerating nodes, during thermal degradation, due to binderless briquetting stresses on rice straw were studied and critically discussed. Intrinsic biopolymeric transformations of rice straw due to binderless briquetting stresses were analysed using thermogravimetry and Fourier transformed infrared spectroscopy. The nonaccelerating nodes in briquetted biofuel shifted towards higher temperature in lignin-related region showing that lignin became less reactive in briquetted biofuel. A pattern similar to the sine wave function was noticed in the tail end segment of the acceleration profile of thermal degradation. This function was at a phase-lag of 180° in briquetted biofuel as compared to the raw material. In briquetted biofuel, fluctuations in degradation rate for lignin region subsided revealing consistent and consolidated lignin configuration. The FTIR-node at 1325.06 cm−1 related to characteristic group vibrations of C O (lignin) emerged in briquetted biofuel. Reduction in energy, related to OH-stretching, CH-bending, C O stretching was observed due to briquetting stresses. Due to briquetting stresses, the vibrational energy of CH-stretching, lignin-related C O vibration, and vibrations of lignin-related benzene ring, increased. The energy-related to Si O Si FTIR node drastically reduced due to briquetting.

中文翻译：

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无粘合剂压块胁迫对稻草基固体生物燃料内在生物成分的影响

摘要 这是第一篇文章，介绍了使用生物材料热降解的非加速节点来可视化热重反应性。研究并批判性地讨论了热降解过程中由于无粘合剂压块应力对稻草造成的非加速节点的转变。使用热重法和傅里叶变换红外光谱分析了由于无粘合剂压块应力引起的稻草内在生物聚合转化。压块生物燃料中的非加速节点在木质素相关区域向更高温度移动，表明木质素在压块生物燃料中的反应性降低。在热降解加速曲线的尾端部分注意到类似于正弦波函数的模式。与原材料相比，该功能在压块生物燃料中处于 180° 的相位滞后。在压块生物燃料中，木质素区域降解率的波动消退，显示出一致和巩固的木质素构型。1325.06 cm-1 处的 FTIR 节点与压块生物燃料中出现的 CO（木质素）的特征组振动有关。由于压块应力，观察到与 OH 拉伸、CH 弯曲、CO 拉伸相关的能量减少。由于压块应力，CH 拉伸的振动能、木质素相关的 CO 振动和木质素相关的苯环的振动增加。由于压块，与 Si O Si FTIR 节点相关的能量显着降低。木质素区域降解率的波动减弱，揭示了一致和巩固的木质素构型。1325.06 cm-1 处的 FTIR 节点与压块生物燃料中出现的 CO（木质素）的特征组振动有关。由于压块应力，观察到与 OH 拉伸、CH 弯曲、CO 拉伸相关的能量减少。由于压块应力，CH 拉伸的振动能、木质素相关的 CO 振动和木质素相关的苯环的振动增加。由于压块，与 Si O Si FTIR 节点相关的能量显着降低。木质素区域降解率的波动减弱，揭示了一致和巩固的木质素构型。1325.06 cm-1 处的 FTIR 节点与压块生物燃料中出现的 CO（木质素）的特征组振动有关。由于压块应力，观察到与 OH 拉伸、CH 弯曲、CO 拉伸相关的能量减少。由于压块应力，CH 拉伸的振动能、木质素相关的 CO 振动和木质素相关的苯环的振动增加。由于压块，与 Si O Si FTIR 节点相关的能量显着降低。由于压块应力，观察到 CO 拉伸。由于压块应力，CH 拉伸的振动能、木质素相关的 CO 振动和木质素相关的苯环的振动增加。由于压块，与 Si O Si FTIR 节点相关的能量显着降低。由于压块应力，观察到 CO 拉伸。由于压块应力，CH 拉伸的振动能、木质素相关的 CO 振动和木质素相关的苯环的振动增加。由于压块，与 Si O Si FTIR 节点相关的能量显着降低。