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Thermal, soluble, and hydrophobic properties of polyimides derived from 4-(4-diethylamino)phenyl-2,6-bis(4-(4-aminophenoxy)phenyl)pyridine

  • Chanjuan Liu
  • Hua Li
  • Mei Mei
  • Yuqi LiEmail author
  • Chun Wei
  • Xiaohua HuangEmail author
ORIGINAL PAPER
  • 57 Downloads

Abstract

A novel aromatic diamine monomer, 4-(4-diethylamino)phenyl-2,6-bis(4-(4-aminophenoxy)phenyl)pyridine (EPAPP), containing pyridine ring units, ether linkage moieties and diethylaminophenyl pendent groups, has been designed and synthesized through three-step methods, and then used to prepare for a series of polyimides with commercial aromatic dianhydrides via two-step solution polycondensation. The resulting polyimides showed good solubility in common polar solvents, such as NMP, DMF, DMSO. They exhibited high thermal stability with the glass transition temperature (Tgs) more than 254 °C, and the temperature of 10% weight loss over 544 °C with more than 64% residue at 800 °C under nitrogen. They presented excellent hydrophobic properties with the contact angle in the range of 81.9–91.9°. In addition, the results of Wide-angle X-ray Diffraction (WAXD) indicated that these polymers revealed an amorphous structure.

Graphical abstract

A series of containing pyridine ring and diethylaminophenyl polyimides were designed and synthesized from a novel diamine EPAPP with several aromatic dianhydrides.

Keywords

Polyimides Thermal stability Solubility Hydrophobicity Pyridine ring 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51563005; 51605109), and supported by Opening Project of Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization (No. HZXYKFKT201806).

Supplementary material

10965_2019_1759_MOESM1_ESM.doc (616 kb)
ESM 1 (DOC 615 kb)

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Guangxi Key Laboratory of Optical and Electronic Materials and Devices, and School of Material Science and EngineeringGuilin University of TechnologyGuilinChina
  2. 2.Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive UtilizationHezhou UniversityHezhouChina

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