中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (6): 35-38.

• 研究论文 • 上一篇    下一篇

热致性液晶乙基纤维素和聚丙烯共混物的结构与性能

张宏放1, 陈柬1, 薛小芙1, 莫志深1, 陈玉2   

  1. 1. 中国科学院长春应用化学研究所高分子物理开放实验室 130022 长春;
    2. 东北师范大学测试中心 长春
  • 收稿日期:1992-11-11 修回日期:1993-04-28 出版日期:1993-12-10 发布日期:1993-12-10
  • 基金资助:
    国家自然科学基金资助项目

STRUCTURES AND PROPERTIES OF THE BLENDS OF THERMOTROPIC LIQUID CRYSTALLINE ETHYLCELLULOSE AND POLYPROPYLENE

Zhang Hongfang1, Chen Jian1, Xue Xiaofu1, Mo Zhishen1, Chen Yu2   

  1. 1. Laboratory of Polymer Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun;
    2. The Center of Analysis and Measurement, Northeast Normal University, Changchun
  • Received:1992-11-11 Revised:1993-04-28 Published:1993-12-10 Online:1993-12-10

PDF

498

被引次数

3

摘要： 乙基纤维素(EC)和聚丙烯共混物沿取向方向有明显的絮条状结构,EC含量增加使Tc提高,△H和Tm有所降低,共混物的成核能力降低,结晶度下降,(110)晶面尺寸减小,(040)晶面尺寸增大。EC/PP共混物的ηa、τa真值更接近于PP结果。力学测定结果给出,EC/PP=10/90的共混物抗张模量有所增加。

关键词: EC/PP共混物, 热致性液晶, 结构, 性能

Abstract: Blends of thermotropic liquid crystalline ethylcellulose and polypropylene (EC/PP) were investigated by polarizing microscopy, DSC,X-ray diffractometry, rheometeric and mechanical measurements. It is found that the blends have a clear and flocky strip structure in the orientation direction. The spherules of PP were found to be damaged with the EC content in the blends. An increase of EC content in the blends led to the increase of Tc,decrease of △Hm and Tm,the nucleation ability as well as the crystallinity of the blends. It also caused reduction of crystalline size of (110) plane and increase of crystalline size of (040) plane. Blend with EC:PP=10:90 showed an increase in tensile modulus.

Key words: ethyl cellulose, polypropylene, thermotropic liquid crystalline, structure, property

网站版权 © 应用化学     本网站备案：吉ICP备12000082号