Investigation of the Long Period Structure for Polyacrylonitrile Precursor by Two Dimensional Small Angle X-ray Scattering

Ying-ge XIAO; Liang-hua XU; Xiao-jian SHI; Meng-fan WANG; Wei-yu CAO

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Investigation of the Long Period Structure for Polyacrylonitrile Precursor by Two Dimensional Small Angle X-ray Scattering

更新时间：2022-09-18

- Investigation of the Long Period Structure for Polyacrylonitrile Precursor by Two Dimensional Small Angle X-ray Scattering
- Polymer Bulletin Vol. 26, Issue 5, Pages: 65-70(2013)
- 作者机构：
  
  北京化工大学，有机无机复合材料国家重点实验室，碳纤维及功能高分子教育部重点实验室，北京　100029
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013-05，
  
  Received：05 November 2012，
  
  Revised：21 December 2012，
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Ying-ge XIAO, Liang-hua XU, Xiao-jian SHI, Meng-fan WANG, Wei-yu CAO. Investigation of the Long Period Structure for Polyacrylonitrile Precursor by Two Dimensional Small Angle X-ray Scattering. [J]. Polymer Bulletin 26(5):65-70(2013)
DOI：

Ying-ge XIAO, Liang-hua XU, Xiao-jian SHI, Meng-fan WANG, Wei-yu CAO. Investigation of the Long Period Structure for Polyacrylonitrile Precursor by Two Dimensional Small Angle X-ray Scattering. [J]. Polymer Bulletin 26(5):65-70(2013) DOI：

摘要

在有效采集湿法纺丝凝固成形的PAN纤维二维小角X射线散射(SAXS)图像的基础上

通过理论模型的建立和散射强度的计算

对散射信息中的微孔结构和长周期结构的叠加信号进行了合理的分离

获得了纤维中长周期结构信息。结合相关函数分析方法

计算了长周期中准晶区厚度、非晶区厚度等结构参数

建立了 PAN纺丝过程中凝固纤维的长周期特征结构的研究分析方法。同时

采用广角X射线衍射(WAXD)方法测定纤维的结晶度

验证了所建立方法的准确性。

Abstract

Two dimensional small angle X-ray scattering (2D-SAXS) method was used to study the characteristic long period structure of polyacrylonitrile precursor. Based on the high resolution measurements

the scattering signal comes from the micro-voids and long period structure was separated successfully by the mathematic analog computation treatment. Research method for the long period structure which includes the arrangement of the crystalline and amorphous regions for PAN precursor was established. Combining with the correlation function

analysis the detail structural parameters such as the long period

the thickness of crystalline and amorphous regions for PAN fiber were obtained. The crytallinity of the fiber was calculated and compared to the data which was determined by traditional WAXD measurement.

关键词

PAN纤维凝固SAXS长周期

Keywords

PAN fiberCoagulatedSAXSLong period structure

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State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University

Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences

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