Journal of Sol-Gel Science and Technology

, Volume 88, Issue 2, pp 386–394 | Cite as

Co-polyimide aerogel using aromatic monomers and aliphatic monomers as mixing diamines

  • Boya Li
  • Shengjun Jiang
  • Shuwen Yu
  • Ying Chen
  • Xianglong Tang
  • Xiaodong Wu
  • Ya Zhong
  • Xiaodong ShenEmail author
  • Sheng CuiEmail author
Original Paper: Nano- and macroporous materials (aerogels, xerogels, cryogels, etc.)


A novel co-polyimide aerogel using aromatic monomers (4,4′-diaminodiphenyl ether, ODA) and aliphatic monomers (1,3-Diaminopropa) as mixing diamines has been prepared via the sol–gel technique. The effects on the properties (density, shrinkage, surface area, and average pore size) of co-polyimide aerogel have been investigated by changing the molar ratios of mixing diamines. The density of co-polyimide aerogel reaches as low as 0.0448 g cm−3, because of replacing part of ODA (M = 269.5) in the backbone with 1,3-diaminopropa (molecular M = 76.1).The thermal conductivities reach as low as ~0.031 W m−1 K−1 (25 °C), BET surface areas are 331 m2 g−1 and the compressive modulus range from 1.253 to 3.273 MPa. The facile preparation route and low thermal conductivity indicate that co-polyimide aerogels may be ideal candidates for aerospace and thermal insulations.

The co-polyimide aerogel produced in this study is golden yellow. The morphology of co-polyimide aerogel shows a three-dimensional network structure of fibrous strands winding. When the molar ratios of ODA to 1,3-propanediamine is 3: 1, the resulting aerogel has the lowest thermal conductivity (0.031 W m−1 K−1)


  • We have developed a sol–gel route to synthesize co-polyimide aerogel using aromatic monomers (ODA) and aliphatic monomers (1,3-diaminopropa) as mixing diamines.

  • The density of co-polyimide aerogel reaches as low as ~0.0448 g cm−3.

  • The thermal conductivities of co-polyimide aerogel reach as low as ~0.031 W m−1 K−1 (25 °C).

Key words

Sol–gel Polyimide Aerogel Thermal conductivity Mesoporous 



This work was financially supported by the Program for Changjiang Scholars and Innovation Research Team in University (No. IRT_15R35), Industry Program of Science and Technology Support Project of Jiangsu Province (BE2016171, BE2017151), the National Natural Science Foundation of China (51702156), the Natural Science Foundation of Jiangsu Province (BK20161002, BK20161003), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJLX_0296), Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). Any opinions, findings and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of those programs.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Boya Li
    • 1
    • 2
    • 3
  • Shengjun Jiang
    • 1
    • 2
    • 3
  • Shuwen Yu
    • 1
    • 2
    • 3
  • Ying Chen
    • 1
    • 2
    • 3
  • Xianglong Tang
    • 1
    • 2
    • 3
  • Xiaodong Wu
    • 1
    • 2
    • 3
  • Ya Zhong
    • 1
    • 2
    • 3
  • Xiaodong Shen
    • 1
    • 2
    • 3
    Email author
  • Sheng Cui
    • 1
    • 2
    • 3
    Email author
  1. 1.Department of Materials Science and EngineeringNanjing Tech UniversityNanjingChina
  2. 2.Jiangsu Collaborative Innovation Center for Advanced Inorganic Function CompositesNanjing Tech UniversityNanjingChina
  3. 3.Advanced Materials Institute of Nanjing Tech UniversitySuqianChina

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