Journal of Polymer Research

, 26:292 | Cite as

Synthesis and properties of processable poly(benzimidazole-imide)s based on 2-(3-aminophenyl)-5-aminobenzimidazole

  • Yang Jiao
  • Guofei ChenEmail author
  • Haijun Zhou
  • Feng Zhang
  • Xiaoqi Chen
  • Yantao Li
  • Xueshan Xiao
  • Xingzhong FangEmail author


A series of poly(benzimidazole-imide)s (PBIPIs) derived from different dianhydrides and 2-(3-aminophenyl)-5-aminobenzimidazole (m-BIA) were synthesized via thermal imidization to form flexible films. This series of PBIPIs showed great Tgs ranging from 296 to 484 °C, excellent thermal stability performed in 5% weight loss temperatures (Td5%s) of 502–529 °C in N2 and good mechanical properties (tensile strengths of 89–127 MPa, tensile moduli of 2.9–4.1 GPa and elongations at break of 3.9–6.9%). Compared with PIs derived from 6-amino-2-(4-(4-aminophenoxy)phenyl)-1H-benzimidazole (p-BIODA), m-BIA based PBIPI films exhibited higher Tg, and better solubility. Besides, the thermoplastic PBIPI resin (PI-6-PA) derived from 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride (BPADA) and m-BIA exhibited good melt processability with high Tg of 273 °C, melt flow index (MFI) of 7.76 g/10 min, minimum complex viscosity of 11.9 × 103 Pa·s at 402 °C and low melt viscosity ratio of 2.46 at 400 °C.


Poly(benzimidazole imide)s 2-(3-aminophenyl)-5-aminobenzimidazole Structure-property relationships Processability 



This work was financially supported by the National Key R&D Program of China (No. 2018YFA0209200), National Natural Science Foundation of China (Grant no. 51403225), Natural Science Foundation of Ningbo City, China (No. 2018A610115) and the program for Ningbo Municipal Science and Technology Innovative Research Team (Grant no. 2015B11002 and 2016B10005).

Supplementary material

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ESM 1 (DOCX 656 kb)


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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Institute of Materials, Key Laboratory for MicrostructuresShanghai UniversityShanghaiPeople’s Republic of China
  2. 2.Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingboPeople’s Republic of China
  3. 3.Institute of Energy ResourcesHebei Academy of SciencesShijiazhuangChina

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