2025, Vol. 6, Issue 2, Part A
Synthesis and characterization of thermally stable polyimides containing spacer methylene linkage and cardo moieties
Author(s): Rajesh Bhorkade, Shivaji Ghodke and Noormahmad Maldar
Abstract: A series of thermally stable and organo-soluble polyimides (PIs) were synthesized via a conventional two-step thermal imidization process involving the polycondensation of a newly developed diamine monomer, 1,1′-bis-[4-(4′-benzylamineoxy) phenyl] cyclohexane (BBAPC), with five commercially available aromatic dianhydrides. The novel diamine (BBAPC), which incorporates methylene linkages and cardo moieties, was successfully synthesized. The resulting polyimides demonstrated excellent thermal stability, good solubility in aprotic polar solvents, and inherent viscosities ranging from 0.40 to 0.58 dL/g. Wide-Angle X-ray Diffraction (WAXD) patterns revealed that all the synthesized polyimides are amorphous in nature. Differential Scanning Calorimetry (DSC) analysis showed glass-transition temperatures (Tg) between 157°C and 196°C, suggesting ease of processing. Thermogravimetric analysis (TGA) indicated 10% weight loss (T₁₀%) in the temperature range of 377-554°C, with char yields between 26% and 39% at 900°C under a nitrogen atmosphere, depending on the dianhydride used. Structure-property relationships were examined in detail, highlighting the potential of these materials for advanced high-performance applications.
DOI: 10.22271/reschem.2025.v6.i2a.197
Pages: 19-29 | Views: 124 | Downloads: 42
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How to cite this article:
Rajesh Bhorkade, Shivaji Ghodke, Noormahmad Maldar. Synthesis and characterization of thermally stable polyimides containing spacer methylene linkage and cardo moieties. J Res Chem 2025;6(2):19-29. DOI: 10.22271/reschem.2025.v6.i2a.197
