高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (2): 387.

• 研究论文 • 上一篇    下一篇

聚甲醛在强磁场下结晶的形貌分析

滕莹雪, 班春燕, 崔建忠   

  1. 东北大学材料电磁过程研究教育部重点实验室, 沈阳 110004
  • 收稿日期:2009-05-14 出版日期:2010-02-10 发布日期:2010-02-10
  • 通讯作者: 崔建忠, 男, 博士, 教授, 主要从事材料电磁过程控制研究. E-mail: jzcui@epm.neu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50674030)资助.

Effect of High Magnetic Field on Morphology of Polyoxymethylene

TENG Ying-Xue, BAN Chun-Yan, CUI Jian-Zhong*   

  1. The Key Laboratory of Ministry of Education for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China
  • Received:2009-05-14 Online:2010-02-10 Published:2010-02-10
  • Contact: CUI Jian-Zhong. E-mail: jzcui@epm.neu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50674030)资助.

摘要:

采用电子显微分析、X射线衍射法、傅里叶红外光谱法及差示扫描量热法分析强磁场对聚甲醛的结晶形态与片晶分布的影响, 探讨了微观组织特征与晶体学取向之间的关系. 研究结果表明, 聚甲醛(POM)在强磁场(12 T)作用下, 片晶厚度以及片晶间距都发生了明显的增大, 熔点升高, 分子链受到磁场的诱导而趋于定向结晶, 产生了沿磁场方向排列的类似漩涡状的结晶形貌.

关键词: 聚甲醛; 强磁场; 构象; 结晶

Abstract:

The effect of magnetic field on recrystallization of polyoxymethylene(POM) from the melt was stu-died by means of scanning electronic microscope(SEM), differential scanning calorimetry(DCS), X-ray diffraction(XRD) and Fourier-transform infrared(FTIR) spectrometry, and the mechanism of magnetic process to POM was investigated. The results show that lamellae thickness, lamellae interval, and the melting point of POM are increased under 12 T high magnetic field. The molecule chain is affected and lamella is crystaled along magnetic field.

Key words: Polyoxymethylene; High magnetic field; Conformation; Crystallization

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