Thermal Stability and Mechanical Properties of Organo-Soluble and Processable Polyimides for High-Temperature Materials |
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Authors: | Muhammad Kaleem Khosa Muhammad Asghar Jamal Rubbia Iqbal Majid Muneer Muhammad Jawwad Saif Khalid Mahmood Zia |
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Affiliation: | 1. Department of Chemistry, Government College University, Faisalabad, Pakistan;2. Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan;3. Department of Applied Chemistry, Government College University, Faisalabad, Pakistan |
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Abstract: | A new series of organo-soluble polyimides with pendant groups of methoxy or methyl of azomethine diamine were synthesized through two-step process by chemical imidization. Such polyimides were tested for thermal and mechanical properties. Their thermal stability was studied in terms of temperature at 10% weight loss which ranged between 475 and 498°C with Tg around 240–278°C. Activation energy, enthalpy of the polyimides were calculated and ranged 31.12–43.59?kJmol?1 and 29.46–41.93?kJmol?1. Thermal, mechanical, and thermodynamic parameters demonstrated that the resulting polyimides can hold excellent application in the fields of high-performance, advanced composites, and high-temperature microelectronics. |
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Keywords: | Azomethine diamines organosolubility polyimide thermal stability |
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