等规聚丙烯离聚体增容聚丙烯/尼龙11共混体系研究

杜惠真; 杨飞; 张坤玉; 马哲; 王彬; 潘莉; 李悦生

doi:10.11777/j.issn1000-3304.2018.18090

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等规聚丙烯离聚体增容聚丙烯/尼龙11共混体系研究

研究论文 | 更新时间：2021-01-26

- 等规聚丙烯离聚体增容聚丙烯/尼龙11共混体系研究
- Study on Compatibilizing Polypropylene/Nylon 11 Blends by Isotactic Polypropylene Ionomers
- 高分子学报 2018年0卷第12期页码：1539-1547
- 作者机构：
  
  1.天津市材料复合与功能化重点实验室天津大学材料科学与工程学院　天津 300350
  2.天津大学化工学院　天津 300350
- 作者简介：
  
  E-mail: lilypan@tju.edu.cn Li Pan, E-mail: lilypan@tju.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 21690071)资助项目()
- DOI：10.11777/j.issn1000-3304.2018.18090
  中图分类号：
- 纸质出版日期：2018-12，
  
  收稿日期：2018-3-22，
  
  修回日期：2018-4-12，
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杜惠真, 杨飞, 张坤玉, 马哲, 王彬, 潘莉, 李悦生. 等规聚丙烯离聚体增容聚丙烯/尼龙11共混体系研究[J]. 高分子学报, 2018,0(12):1539-1547.

Hui-zhen Du, Fei Yang, Kun-yu Zhang, Zhe Ma, Bin Wang, Li Pan, Yue-sheng Li. Study on Compatibilizing Polypropylene/Nylon 11 Blends by Isotactic Polypropylene Ionomers[J]. Acta Polymerica Sinica, 2018,0(12):1539-1547.
杜惠真, 杨飞, 张坤玉, 马哲, 王彬, 潘莉, 李悦生. 等规聚丙烯离聚体增容聚丙烯/尼龙11共混体系研究[J]. 高分子学报, 2018,0(12):1539-1547. DOI： 10.11777/j.issn1000-3304.2018.18090.

Hui-zhen Du, Fei Yang, Kun-yu Zhang, Zhe Ma, Bin Wang, Li Pan, Yue-sheng Li. Study on Compatibilizing Polypropylene/Nylon 11 Blends by Isotactic Polypropylene Ionomers[J]. Acta Polymerica Sinica, 2018,0(12):1539-1547. DOI： 10.11777/j.issn1000-3304.2018.18090.

摘要

以碘代等规聚丙烯为大分子反应中间体，通过季胺化亲核取代反应和点击化学反应，制备了

-甲基咪唑聚丙烯离聚体(IA)和邻巯基苯胺盐酸盐聚丙烯离聚体(IB)，并将其作为等规聚丙烯/生物基尼龙11 (

PP/PA11)共混体系的增容剂. 通过动态力学分析(DMA)、扫描电镜(SEM)和力学性能测试，对

PP/PA11/聚丙烯离聚体三元共混体系的相形态与性能进行了系统研究. DMA测试结果显示，2种聚丙烯离聚体使

PP/PA11共混体系的玻璃化转变温度

相互靠近；SEM结果显示，离聚体的加入使分散相粒子尺寸显著减小，两相界面作用力增加；力学性能测试表明，

PP/PA11/IA、

PP/PA11/IB三元共混体系的拉伸强度和冲击强度保持较好的水平. 以上研究结果表明，IA和IB均可以显著改善

PP/PA11共混体系的相容性.

Abstract

The copolymers of propylene/11-iodo-1-undecene were taken as intermediates and the iodine group underwent a nucleophilic substitution reaction or click reaction with

-methylimidazole or 2-mercaptonoaniline to prepare isotactic polypropylene ionomers. Isotactic polypropylene (

PP) and bio-renewable polyamide 11 (PA11) were mixed with the isotactic polypropylene ionomers to prepare novel polymer blends with excellent physical properties. The miscibility

morphology and mechanical properties of

PP/ionomer blends

PA11/ionomer blends and

PP/PA11/ionomer blends were investigated

respectively. DMA analysis revealed that miscibility of

PP and PA11 was improved by addition of the isotactic polypropylene ionomers

which served as an effective compatibilizer and played a key role in improving toughness of

PP/PA11 blends. As observed

particles size of the dispersed phase (PA11) was significantly reduced from about 20 μm to 1 μm in the ternary blends of

PP/PA11/ionomer. Interface between the matrix and the dispersed phase became blurred and the gap disappeared in the ternary blend of

PP/PA11/ionomer (70/30/5)

as observed on the SEM images of the cryo-fractured surface of the blend. Accordingly

notched impact strength of the same ternary blend was greatly improved from 2.11 kJ/m

to 6.73 kJ/m

without significantly sacrificing the tensile strength. To further study the toughening effect of

PP/PA11/ionomer ternary blends

the fracture surface of the impact specimen was also investigated. As proved

the

PP/PA11 (70/30) blend showed a smooth and featureless fracture surface without evident deformation

indicating a typical brittle fracture behavior

while the fracture surfaces of the ternary blends was increasingly rough and many irregularities were clearly observed

indicating a ductile fracture behavior. Here we proved that the synthesized isotactic polypropylene ionomers enhanced the two-phase interface interaction and the compatibility in the

PP/PA11/ionomer ternary blend. It is therefore a very promising and effective compatibilizer for

PP/PA11 blends. Moreover

the resulting

PP/PA11 blends with excellent impact properties and tensile properties are very promising in practically application.

关键词

等规聚丙烯离聚体聚丙烯尼龙11共混增容

Keywords

Isotactic polypropyleneIonomersPolyamide 11CompatibilizationBlend

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