Abstract Carbon micro/nanostructures have advantages in science, technology and application. This work introduced a simple process for producing carbon microfibers, CMF. Experimentally, the alkali lignin was blended with the poly(butylene terephthalate), PBT, to form the blending fiber by the melt spinning, then this blending fiber was thermally treated to convert into the CMF. Results shown that the carbonization temperature is of importance because it at 800 °C can’t form CMF and at 1000 °C can form CMF with average diameter within 100-300 nm and average length within 10-15 μm. Elemental analysis shown that the CMF has a carbon percent at about 92%. Infrared analysis indicated that this CMF was formed by carbonization caused breaking of the bonds between C–H groups and ring structure.

中文翻译：

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由聚对苯二甲酸丁二醇酯/木质素混合纤维转化而来的碳超细纤维

摘要 碳微纳米结构在科学、技术和应用方面具有优势。这项工作介绍了一种生产碳微纤维 CMF 的简单工艺。实验上，将碱性木质素与聚对苯二甲酸丁二醇酯PBT共混，通过熔融纺丝形成共混纤维，然后对该共混纤维进行热处理转化为CMF。结果表明，碳化温度很重要，因为它在800°C不能形成CMF，而在1000°C可以形成平均直径在100-300 nm，平均长度在10-15 μm的CMF。元素分析表明，CMF 的碳百分比约为 92%。红外分析表明，这种 CMF 是由碳化形成的，导致 C-H 基团和环结构之间的键断裂。