Multifunctional behavior of POSS-reinforced imidazole core polyimide nanocomposites

  • Rajesh Kumar Revathi
  • Arumugam Hariharan
  • Pichaimani Prabunathan
  • Krishnan Srinivasan
  • Muthukaruppan AlagarEmail author
Original Paper


A new imidazole core unsymmetrical diamine monomer (4, 4′ (4, 5-diphenyl-1H-imidazol-1, 2-diyl) dianiline) was successfully synthesized and used as precursor to develop polyimide (PI). In addition, different weight percentages of octaaminophenyl silsesquioxane (NH2-POSS) were reinforced to form, respective, POSS–PI nanocomposites. The formation of polyimides and composites was confirmed by various spectral analyses in addition to their morphology studies by scanning electron microscopy and high-resolution transmission electron microscope. Further, the developed neat PI and POSS–PI nanocomposites were studied for their thermal, optical, dielectric and antimicrobial properties. Data resulted from different studies indicated that the incorporation of 10 wt% NH2-POSS into the PI matrix show higher glass transition temperature, higher thermal stability and better UV shielding behavior when compared to the neat PI matrix as well as other POSS–PI composites. Dielectric studies infer that the value of dielectric constant was decreased with increasing the weight percentages of NH2-POSS reinforcement and the lowest value of dielectric constant (k = 2.1) was obtained for 10 wt% POSS–PI hybrid nanocomposites in addition to its better antimicrobial behavior. Thus, the current study promises that the developed PI and POSS–PI can be used as a multifunctional composite in various high-performance applications.


Imidazole diamine Polyimide Glass transition temperature Thermal stability Dielectric constant UV shielding behavior Antibacterial behavior 

Supplementary material

289_2018_2636_MOESM1_ESM.docx (393 kb)
Supplementary material 1 (DOCX 392 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of ChemistryVel Tech Multi Tech Dr. Rangarajan Dr. Sakunthala Engineering CollegeChennaiIndia
  2. 2.Polymer Composites Laboratory, Centre of Excellence for Advanced Material Manufacturing, Processing and Characterization (CoExAMMPC)VFSTR UniversityGunturIndia
  3. 3.Indian Institute of Handloom Technology SalemSalemIndia

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