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Accelerating Thermal Stabilization by Pyrolytic Lignin for Partially Bio‐Based Carbon Fiber Precursor
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-12-12 , DOI: 10.1002/mame.201900618 Hui Shi 1 , Qin Ouyang 2 , Jingyu Wang 1 , Jianwei Hao 1 , Xianbo Huang 3
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-12-12 , DOI: 10.1002/mame.201900618 Hui Shi 1 , Qin Ouyang 2 , Jingyu Wang 1 , Jianwei Hao 1 , Xianbo Huang 3
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In this study, a partially bio‐based carbon fiber (CF) precursor is prepared by blending 32 wt% of pyrolytic lignin (PyL) with 68 wt% of poly(acrylonitrile‐co‐itaconic acid) (PANIA), and the effect of PyL on forming conjugated ladder structure during stepwise thermal stabilization is studied. The results of X‐ray photoelectron spectroscopy (XPS) reveal that PyL accelerates the formation of conjugated ladder structure at 230 °C during thermal stabilization for PANIA/PyL, which is 15 °C lower and 13 min earlier than PANIA. The acceleration on forming thermally stable conjugated ladder structure can be confirmed through Fourier‐transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). Moreover, the fiber stabilized at 230 °C is subsequently made into PANIA/PyL‐230 CF, which has relatively higher‐ordered graphitic structure and dense morphology without voids. The mechanism of PyL accelerating the formation of conjugated ladder structure during thermal stabilization is discussed.
中文翻译：
部分生物基碳纤维前驱体通过热解木质素促进热稳定
在这项研究中，部分基于生物的碳纤维（CF）的前体是通过用聚68重量％（丙烯腈混合热解木素的32重量％（PYL）制备共聚衣康酸（PANIA），并研究了PyL对逐步热稳定过程中形成共轭梯形结构的影响。X射线光电子能谱（XPS）的结果表明，在PANIA / PyL的热稳定过程中，PyL在230°C时加速了共轭梯形结构的形成，这比PANIA降低了15°C，提前了13分钟。可以通过傅立叶变换红外光谱（FTIR），差示扫描量热法（DSC）和热重分析（TGA）来确认形成热稳定共轭梯形结构的加速度。此外，稳定在230°C的纤维随后被制成PANIA / PyL-230 CF，该纤维具有相对较高的石墨结构和致密的形貌，没有空隙。
更新日期：2020-01-15
中文翻译：
部分生物基碳纤维前驱体通过热解木质素促进热稳定
在这项研究中，部分基于生物的碳纤维（CF）的前体是通过用聚68重量％（丙烯腈混合热解木素的32重量％（PYL）制备共聚衣康酸（PANIA），并研究了PyL对逐步热稳定过程中形成共轭梯形结构的影响。X射线光电子能谱（XPS）的结果表明，在PANIA / PyL的热稳定过程中，PyL在230°C时加速了共轭梯形结构的形成，这比PANIA降低了15°C，提前了13分钟。可以通过傅立叶变换红外光谱（FTIR），差示扫描量热法（DSC）和热重分析（TGA）来确认形成热稳定共轭梯形结构的加速度。此外，稳定在230°C的纤维随后被制成PANIA / PyL-230 CF，该纤维具有相对较高的石墨结构和致密的形貌，没有空隙。
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