多壁碳纳米管/液晶高分子复合材料的制备及其对PP结晶行为的影响

周群华; 李攀; 郭艳青; 胡建设

doi:10.14028/j.cnki.1003-3726.2016.03.007

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多壁碳纳米管/液晶高分子复合材料的制备及其对PP结晶行为的影响

研究论文 | 更新时间：2022-09-12

- 多壁碳纳米管/液晶高分子复合材料的制备及其对PP结晶行为的影响
- Preparation of Multiwalled Carbon Nanotube/Liquid Crystalline Polymer Composites and its Influence on Crystallization Behavior of PP
- 高分子通报 2016年29卷第3期页码：43-47
- 作者机构：
  
  1.郑州澍青医学高等专科学校，郑州 450064
  2.东北大学理学院，沈阳 110004
- 作者简介：
  
  *胡建设，教授，主要从事液晶高分子、生物降解高分子和高分子改性材料的研究。E-mail: hujs@mail.neu.edu.cn.
- 基金信息：
  
  沈阳市基金(F14-231-1-05)
- DOI：10.14028/j.cnki.1003-3726.2016.03.007
  中图分类号：
- 纸质出版日期：2016-03-20，
  
  收稿日期：2015-08-11，
  
  修回日期：2015-11-04，
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周群华, 李攀, 郭艳青, 胡建设. 多壁碳纳米管/液晶高分子复合材料的制备及其对PP结晶行为的影响[J]. 高分子通报, 2016,29(3):43-47.

Qun-hua ZHOU, Pan LI, Yan-qing GUO, Jian-she HU. Preparation of Multiwalled Carbon Nanotube/Liquid Crystalline Polymer Composites and its Influence on Crystallization Behavior of PP[J]. Polymer Bulletin, 2016,29(3):43-47.
周群华, 李攀, 郭艳青, 胡建设. 多壁碳纳米管/液晶高分子复合材料的制备及其对PP结晶行为的影响[J]. 高分子通报, 2016,29(3):43-47. DOI： 10.14028/j.cnki.1003-3726.2016.03.007.

Qun-hua ZHOU, Pan LI, Yan-qing GUO, Jian-she HU. Preparation of Multiwalled Carbon Nanotube/Liquid Crystalline Polymer Composites and its Influence on Crystallization Behavior of PP[J]. Polymer Bulletin, 2016,29(3):43-47. DOI： 10.14028/j.cnki.1003-3726.2016.03.007.

摘要

首先通过原位聚合法合成了一种新型多壁碳纳米管/液晶高分子复合材料(MCNT/LCP)

然后将其与聚丙烯共混

制备了一系列的共混样品。采用FT-IR、DSC与POM等表征了MCNT/LCP复合材料的结构与液晶性能

利用XRD与DSC研究了聚丙烯共混物的结晶结构与结晶动力学

探讨了MCNT/LCP含量与结晶温度对聚丙烯共混物结晶行为的影响。结果表明:所合成的MCNT/LCP呈现近晶相的扇形织构

当MCNT/LCP被引入到聚丙烯中后

不仅起到异相成核的作用

而且能诱导β晶的形成

同时

DSC降温曲线峰型也变得比较尖锐

结晶峰温度提高

结晶速度加快。

Abstract

A new multiwalled carbon nanotube/liquid crystalline polymer composite (MCNT/LCP) were prepared by situ polymerization

and then a series of polypropylene (PP) blends with different mass fraction of MCNT/LCP were blended using melting mixing at proper technical condition. The structures and liquid crystalline properties of MCNT/LCP obtained in this study were characterized by FT-IR

differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). The crystallization structure and kinetics of PP blends were investigated with wide angle X-ray diffraction (XRD) and DSC. The effect of MCNT/LCP content and crystallization temperature on the crystallization behavior of the PP blends was discussed. The experimental results showed that MCNT/LCP composite exhibited the fan-shaped texture of smectic phase

MCNT/LCP with low concentration in PP could play a role in the heterogeneous nucleation effect

and β-phase in PP was induced. In addition

the peak form of DSC cooling curves became more and more sharp

and the crystallization velocity and temperature were enhanced.

关键词

碳纳米管液晶高分子聚丙烯结晶行为

Keywords

Carbon nanotubeLiquid crystalline polymerPolypropyleneCrystallization behavior

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