聚丙烯腈
RGB颜色模型
色空间
反射率
材料科学
橙色(颜色)
化学工程
化学
制浆造纸工业
复合材料
聚合物
计算机科学
光学
人工智能
图像(数学)
物理
食品科学
工程类
作者
Andrea L. Wilde,Menghe Miao
标识
DOI:10.1080/00405000.2023.2233070
摘要
AbstractThe conversion of polyacrylonitrile (PAN)-based precursors into high-performance carbon fibres requires careful control of treatment conditions. The stabilization process is a crucial step in this conversion process as the precursor undergoes chemical modifications that will substantially influence the properties of the final product. As the PAN fibre undergoes stabilization, its colour changes from white through various shades of orange and brown until an overall black appearance is achieved as a result of the imine-based chromophores generated from the underlining chemical reactions. In this work, we quantified the colour changes caused by a wide range of stabilization conditions on a reflectance spectrophotometer. Both CIELAB colour space and RGB colour space measurements correlated well with widely adopted stabilization indicators for oxidized PAN fibre (OPF), including fibre density and relative cyclization index. In particular, RGB colour component B showed very good linear and quadratic relationships with OPF density and relative cyclization index, respectively. The method used in this investigation may be further developed into a convenient tool for monitoring the progression of PAN fibre stabilization.Keywords: Carbon fibrepolyacrylonitrileoxidationcolourcyclizationdensity AcknowledgmentsThe authors thank Janice Hair and Lucy Cotter for fibre density testing, Gijo Sebastian for his assistance with data conversion, and Carbon Nexus team (Deakin University) for conducting the continuous oven processing trials.Disclosure statementNo potential conflict of interest was reported by the author(s).
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