Carbon fiber from fast pyrolysis bio-oil

Science and Technology of Materials Pub Date : 2018-12-01 DOI:10.1016/j.stmat.2018.10.001

D.C.P. Vélez , W.L.E. Magalhães , G. Capobianco

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引用次数: 4

Abstract

The fast pyrolysis bio-oil is a promising product to be used as fuel. It is produced by means of wood particles subjected to high heat rates for very little time. However, the resulting oil has a very high oxygen content, which to be used as fuel requires upgrading processes, which makes its costs higher than mineral oil. The aim of this paper is to study the fast pyrolysis bio-oil as a precursor of carbon fibers. A heat treatment in the bio-oil was used until the optimum softening point temperature was reached for the subsequent melt spinning process. Additives such as kraft lignin and furfuryl alcohol improved the spinning process and caused the fibers to resist the carbonization step. Characterization by Fourier-transformed infrared, ¹³C VACP-MAS NRM and Raman revealed that the heat-treated bio-oil presented a great amount of oxygenated groups and that mainly the aromatization of the samples was verified after the carbonization process. SEM images showed that the fibers diameters were too high.

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快速热解生物油制备的碳纤维

快速热解生物油是一种很有前途的燃料产品。它是由木材颗粒在很短的时间内受到高热率的影响而产生的。然而，由此产生的油具有非常高的氧含量，作为燃料需要升级过程，这使得其成本高于矿物油。本文的目的是研究快速热解生物油作为碳纤维的前驱体。在生物油中进行热处理，直到达到最佳软化点温度，用于随后的熔融纺丝工艺。硫酸盐木质素和糠醇等添加剂改善了纺丝工艺，使纤维抵抗炭化步骤。傅里叶变换红外、13C VACP-MAS NRM和拉曼表征表明，热处理后的生物油存在大量的含氧基团，主要是炭化后的芳构化。扫描电镜显示纤维直径过大。

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Science and Technology of Materials

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