SAXS observation of structural evolution of heated olefin

SUN Minhua MOU Hongchen WANG Yuxi LI Demin WANG Aiping MA Congxiao CHENG Weidong WANG Dan LIU Jia

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SAXS observation of structural evolution of heated olefin

更新时间：2021-03-12

- SAXS observation of structural evolution of heated olefin
- NUCLEAR TECHNIQUES Issue 7, (2007)
- 作者机构：
  
  1. 哈尔滨师范大学物理系
  2. 哈尔滨师范大学物理系,哈尔滨,150025
- 作者简介：
- 基金信息：
  
  黑龙江省教育厅科学技术研究项目(11511125)资助
- DOI：
  CLC： O434.14
- Published：01 July 2007
- 稿件说明：
移动端阅览
[1]孙民华,牟洪臣,王玉玺,李德敏,王爱屏,马丛笑,程伟东,王丹,刘佳.小角X射线散射研究石蜡加热过程中的结构变化[J].核技术,2007(07):568-570.

SUN Minhua MOU Hongchen WANG Yuxi LI Demin WANG Aiping MA Congxiao CHENG Weidong WANG Dan LIU Jia. SAXS observation of structural evolution of heated olefin[J]. Nuclear techniques, 2007, (7): 568-570.
[1]孙民华,牟洪臣,王玉玺,李德敏,王爱屏,马丛笑,程伟东,王丹,刘佳.小角X射线散射研究石蜡加热过程中的结构变化[J].核技术,2007(07):568-570. DOI：

SUN Minhua MOU Hongchen WANG Yuxi LI Demin WANG Aiping MA Congxiao CHENG Weidong WANG Dan LIU Jia. SAXS observation of structural evolution of heated olefin[J]. Nuclear techniques, 2007, (7): 568-570. DOI：

摘要

采用原位加热

用同步辐射X射线小角散射法研究了石蜡加热软化过程中的微结构变化。石蜡的电子密度回转半径从22℃的11.61nm减至100℃的11.16nm

而均方电子密度均方起伏从22℃的468nm-2升高到100℃的2416nm-2。由此

石蜡变软并非由内部结构单元变小引起

而主要由分子热运动加剧引起。

Abstract

Structural evolution of olefin during its heating process was observed with SAXS method at Beijing Syn-chrotron Radiation Facility.The mean square fluctuation of electron density increased from 468.5 nm-2 at 22℃ to 2416 nm-2 at 100℃

while the electronic gyration radius decreased from 11.61 nm at 22℃ to 11.16 nm at 100℃.Therefore

the olefin softens as a result of the increased thermal motion of the molecules

rather than the shrinking size of fundamental structural units of olefin.

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Related Author

Shuai WANG

Changhong PENG

Yun GUO

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School of Nuclear Science and Technology, University of Science and Technology of China

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