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Thermal Properties and Solubility of Poly-1,4,5,8-naphthalenetetracarboxydiimides Containing 1,3,5-Triazine Rings by Ryozo Takatsuka; Terunobu Unishi; Itaru Honda; Toshio Kakurai is a Materials Science article available to read on EtoBox.
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## Abstract Aromatic polyimides were synthesized by polymerization of 1,4,5,8‐naphthalenetetracarboxylic dianhydride and 2‐dialkylamino‐4,6‐dihydrazino‐1,3,5‐triazines by a solution polymerization method followed by cyclodehydration. The polyimides had number‐average molecular weights over 13,000–16,000 or viscosity values of 0.23–0.65 dl/g. The x‐ray diffraction diagram of polyimide I showed a crystal pattern, but the pattern became less pronounced with increasing length of the polymer side chain, and thus polyimide V showed a typical amorphous pattern. Study of the thermal stability of the polyimides by thermogravimetric analysis showed that a steep weight loss occurred in the range 380–410°C. Among the polyimides, I had only poor solubility in organic solvent, while IV and V were soluble even in general organic solvents such as tetrahydrofuran and dioxane.
Who reads Thermal Properties and Solubility of Poly-1,4,5,8-naphthalenetetracarboxydiimides Containing 1,3,5-Triazine Rings?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Ryozo Takatsuka; Terunobu Unishi; Itaru Honda; Toshio Kakurai
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Wiley (ISSN 0360-6376)
- Published
- 1977
- Language
- EN
- Field
- Materials Science (Physical Sciences)