Indicators for Evaluation of Progress in Thermal Stabilization Reactions of Polyacrylonitrile Fibers

被引：61

作者：

Arbab, Shahram ^{[1
]}

Mirbaha, Hamideh ^{[2
]}

Zeinolebadi, Ahmad ^{[3
]}

Nourpanah, Parviz ^{[4
]}

机构：

[1] Amirkabir Univ Technol, Dept Text Engn, ATMT Res Inst, Tehran, Iran

[2] Univ Guilan, Dept Text Engn, Fac Engn, Rasht, Iran

[3] Univ Hamburg, Inst Tech & Macromol Chem, Dept Chem, D-20146 Hamburg, Germany

[4] Amirkabir Univ Technol, Dept Text Engn, Tehran, Iran

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2014年 / 131卷 / 11期

关键词：

polyacrylonitrile; thermal stabilization; stabilization index; FT-IR; XRD; DSC; NEAR-INFRARED SPECTROSCOPY; OXIDATIVE STABILIZATION; CARBON-FIBER; PRECURSOR FIBERS; AROMATIZATION INDEX; REACTION-KINETICS; MOLECULAR-WEIGHT; HEAT-TREATMENT; MICROSTRUCTURE; POLYMERIZATION;

D O I：

10.1002/app.40343

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Using different indices calculated from Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Differential Scanning Calorimetry (DSC) spectra, progress in stabilization reactions of three different commercial grade polyacrylonitrile (PAN) fibers is calculated. From each analysis technique quantitative indices are computed which could assess in some particular reactions. Combination of these indices gives further information about the progress of stabilization reactions which cannot be concluded from single indices. The results show that different indices are not fully consistent with each other, depending on the analysis technique and the changes they assess. The advantages and disadvantages of each index are investigated and practical indices are identified which can be used to design the optimum stabilization process. In addition, by combination of some indices it is possible to separate the temperature ranges in which reactions occur in amorphous or crystalline regions. This approach can be used to design appropriate stretching process during stabilization. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40343.

引用

页数：8