Polyacrylonitrile/boron nitride nanotubes composite precursor and carbon fibers

被引：18

作者：

Chang, Huibin ^{[1
]}

Lu, Mingxuan ^{[2
]}

Luo, Jeffrey ^{[1
]}

Park, Jin Gyu ^{[3
]}

Liang, Richard ^{[3
]}

Park, Cheol ^{[4
]}

Kumar, Satish ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, 801 Ferst Dr NW,MRDC 1, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

[3] Florida State Univ, High Performance Mat Inst, 2005 Levy Ave, Tallahassee, FL 32310 USA

[4] NASA, Adv Mat & Proc Branch, Langley Res Ctr, Hampton, VA 23681 USA

来源：

CARBON | 2019年 / 147卷

关键词：

STABILIZATION; KINETICS;

D O I：

10.1016/j.carbon.2019.03.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyacrylonitrile (PAN)/boron nitride nanotubes (BNNTs) composite fibers were spun using gel spinning method and the resulting carbon fibers were processed after the fibers were stabilized in air and subsequently carbonized in nitrogen. PAN fibers containing 1 wt% BNNTs show comparable drawability to the control PAN fiber while the drawability of composite fibers significantly decreases as BNNT concentration increases from 1 to 5 wt%. Differential scanning calorimetry suggests that the presence of BNNTs reduces the activation energy of oxidation and crosslinking reactions but has little effect on the activation energy of cyclization reaction during stabilization. In the PAN/BNNTs based carbon fibers, the graphitic carbon structure that formed in the vicinity of BNNT was directly observed by transmission electron microscopy. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：419 / 426

页数：8

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