Boron(III)-Containing Composite Hydrated Cellulose Fibers As Precursors of Carbon Materials

被引：0
|
作者：
Egorov, Yu. A. [1 ]
Bondarenko, G. N. [1 ]
Vinogradov, M. I. [1 ]
Kulichikhin, V. G. [1 ]
机构：
[1] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119991, Russia
来源：
POLYMER SCIENCE SERIES B | 2023年 / 65卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
hydrated cellulose; N-methylmorpholine-N-oxide; morphology; composite fibers; carbon fibers; N-OXIDE; POLYACRYLONITRILE; PYROLYSIS; STATE; BORON;
D O I：
10.1134/S1560090423701257
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Composite fibers containing boron(III) have been obtained based on solid solutions of cellulose in N-methylmorpholine-N-oxide and orthoboric acid with their subsequent transformation into a viscous-flow state. The rheological behavior of cellulose solutions with different content of orthoboric acid and water studied under conditions of continuous and dynamic shear loading has confirmed the intermolecular interaction between the components. It has been shown that the mechanical characteristics of the composite fibers obtained from a 16% solution in N-methylmorpholine-N-oxide are comparable to these for hydrated cellulose fibers. The process of transformation of the composite fibers of various compositions into carbon fiber has been investigated by means of thermogravimetric analysis and differential scanning calorimetry. Chemical, structural and morphological properties of composite hydrated cellulose fibers and carbon fibers obtained from them have been studied using FTIR-spectroscopy, X-ray diffraction, and scanning electron microscopy. The influence of boron(III) compounds on the carbonization process and the formation of graphite-like structures in carbon fiber has been investigated by Raman-spectroscopy.
引用
收藏
页码：657 / 671
页数：15
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