高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 861.

• 研究快报 • 上一篇    下一篇

[C14MIM]Br离子液体对聚丙烯超临界CO2发泡性能的影响

李博轩1, 余坚2, 丁运生1, 张军2, 何嘉松2   

  1. 1. 合肥工业大学化工学院, 合肥 230009;
    2. 中国科学院化学研究所, 高分子科学与材料联合实验室, 工程塑料重点实验室, 北京分子科学国家实验室, 北京 100190
  • 收稿日期:2009-12-30 出版日期:2010-05-10 发布日期:2010-05-10
  • 通讯作者: 余坚, 男, 博士, 副研究员, 主要从事高分子材料结构与性能的研究. E-mail: yuj@iccas.ac.cn; 丁运生, 男, 博士, 教授, 主要从事离子液体对聚合物结构与性能的影响的研究. E-mail: dingys@hfut.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50873113, 50973025)和安徽省自然科学基金(批准号: 090414180)资助.

Effect of [C14MIM]Br Ionic Liquid on Foaming Behavior of Polypropylene by Supercritical CO2

LI Bo-Xuan1 , YU Jian2*, DING Yun-Sheng1*, ZHANG Jun2, HE Jia-Song2   

  1. 1. School of Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
    2. Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

  • Received:2009-12-30 Online:2010-05-10 Published:2010-05-10
  • Contact: YU Jian. E-mail: yuj@iccas.ac.cn; DING Yun-Sheng. E-mail: dingys@hfut.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50873113, 50973025)和安徽省自然科学基金(批准号: 090414180)资助.

PDF (PC)

摘要：

本文对PP/[C14MIM]Br体系的熔融过程和对CO2的吸收, 以及[C14MIM]Br在PP基体中的分散状态进行了研究, 并初步考察了[C14MIM]Br对PP发泡性能的影响.

关键词: [C14MIM]Br离子液体; 聚丙烯; 超临界CO2; 发泡性能

Abstract:

Effects of an ionic liquid, 1-n-tetradecyl-3-methylimidazolium bromide([C14MIM]Br), as a foaming additive on the foaming behavior of polypropylene(PP) by supercritical CO2 technique was reported. Mass ratio of PP/[C14MIM]Br up to 100∶10 was incorporated via melt blending. The melting behavior and fractured morphology of PP/[C14MIM]Br samples were investigated by differential scanning calorimetry(DSC) and scanning electron microscopy(SEM), respectively. The CO2 sorption was measured by commonly accep-ted gravimetric method. The results of DSC and CO2 sorption experiments show that [C14MIM]Br has little effect on the crystallinity, melting point and the mass uptake of CO2 of PP. SEM images reveal that [C14MIM]Br forms a well-dispersed phase, whose size increases with [C14MIM]Br content, in the PP matrix. The foamed PP/[C14MIM]Br samples exhibit close cell structure, increased cell size and decreased un-foamed region and bulk density, compared with pure PP foamed under the same saturation conditions of 155 ℃/10 MPa, indicating ionic liquid [C14MIM]Br has significant effect on the foaming behavior of PP.

Key words: [C14MIM]Br ionic liquid; Polypropylene; Supercritical carbon dioxide; Foaming property

TrendMD: