高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (2): 269.doi: 10.7503/cjcu20120904

• 研究快报 • 上一篇    下一篇

纳米CT成像表征锦纶6中TiO2颗粒分布状况

刘少轩1, 洪友丽2, 高云龙1,3, 黄万霞2, 袁清习2, 张凯2, 刘玉峰1,4, 康廷国3, 赵莹4, 徐怡庄1, 吴瑾光1   

  1. 1. 北京大学化学与分子工程学院, 北京分子科学国家实验室, 稀土材料化学及应用国家重点实验室, 北京 100871;
    2. 中国科学院高能物理研究所, 北京 100039;
    3. 辽宁中医药大学药学院, 大连 116600;
    4. 中国科学院化学研究所, 北京分子科学国家实验室, 工程塑料院重点实验室, 北京100190
  • 收稿日期:2012-10-05 出版日期:2013-02-10 发布日期:2013-01-21
  • 通讯作者: 徐怡庄,男,博士,副教授,主要从事分子光谱研究.E-mail:xyz@pku.edu.cn E-mail:xyz@pku.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50973003)和国家"八六三"重大项目(批准号: 2010AA03A406)资助.

Characterization of the Dispersion of TiO2 Particles in Fine Denier Polyamide 6 Monofilament via Nano-CT Technique

LIU Shao-Xuan1, HONG You-Li2, GAO Yun-Long1,3, HUANG Wan-Xia2, YUAN Qing-Xi2, ZHANG Kai2, LIU Yu-Feng1,4, KANG Ting-Guo3, ZHAO Ying4, XU Yi-Zhuang1, WU Jin-Guang1   

  1. 1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
    2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China;
    3. College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China;
    4. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2012-10-05 Online:2013-02-10 Published:2013-01-21
  • Contact: XU Yi-zhuang E-mail:xyz@pku.edu.cn

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摘要：

无机纳米材料与高分子基质共混构成有机鄄无机复合材料, 对其电学、光学和机械性能产生显著影响, 因而受到广泛关注[1~5]. 为使其性能得到切实改善, 需要使无机纳米材料在高分子基质中均匀分散[6,7]. 对其分散状态的检测传统方法是对材料进行超薄、连续切片后, 用透射电子显微镜(TEM)进行观察[8,9]. 由于材料的厚度只能在10 nm 左右, 需要对大量切片进行观测才能获得其中无机纳米材料分布的全面信息. 此外, 某些样品在切片过程中因剪切而发生形变, 使TEM 结果出现假象, 因此限制了方法的应用.

关键词: X射线计算机断层扫描, 纳米CT成像, 锦纶6纤维, 二氧化钛颗粒, 分散

Abstract:

The distribution of TiO2 particles as flatting agent in fine denier polyamide 6 monofilament was investigated via synchrotron radiation X-ray nano CT technique. 2D and 3D reconstructed images of the polyamide 6 monofilament with different contents of TiO2 particles were obtained by treating the projection images with filter back projection algorithm and digital image processing methods. As the content of TiO2 particles increases, the agglomeration of TiO2 particles becomes more severe. As a result, agglomerated TiO2 particles whose diameter is around 800 nm were observed in the full dull polyamide 6 monofilament. The agglomeration of TiO2 particles is relevant to the decrease of the spinning stability in the manufacturing of full dull fine denier polyamide 6 fibers.

Key words: X-ray computed tomography, Nano-CT technique, Polyamide 6 fiber, TiO2 particles, Dispersion

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