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Citation: Feng-chun Yang, Jing Wang, Lin Chen, Xin Wang, Xiang-yu Chen, Xin Zhang. Soluble and Degradable Polyimides with Phenyl-2-pyridyl Ether Structure: Synthesis and Characterization[J]. Chinese Journal of Polymer Science, ;2015, 33(3): 481-489. doi: 10.1007/s10118-015-1602-6 shu

Soluble and Degradable Polyimides with Phenyl-2-pyridyl Ether Structure: Synthesis and Characterization

1.
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
2.
Samsung China Semiconductor Company Limited. Xi'an 710119, China
3.
Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Institute of Analytical Science, Northwest University, Xi'an 710069, China

Received Date: 26 June 2014
Revised Date: 28 August 2014

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 21301137 and 21405120), the New Teachers' Fund for Doctor Stations, Ministry of Education (No. 20126101120012), the Scientific Research Program by Shaanxi Provincial Education Department (Nos. 12JK0578 and 12JK0617) and the Scientific Research Foundation of Shaanxi Provincial Key Laboratory (11JS080 and 12JS087 and by NFFTBS (Nos. J1103311 and J1210057).

A diamine monomer o-phenylenedioxybis(5-amino-2-pyridine) was synthesized via reduction of a dinitro compound o-phenylenedioxybis(5-nitro-2-pyridine), producing a series of new polyimides from this diamine and various commercially available aromatic dianhydrides via conventional two-stage processes. The resulting polyimides are able to form tough and transparent films, with decomposition temperatures in the range of 529-551 ℃, and can be dissolved in organic polar solvents. Meanwhile, these polyimides can be degraded in a hydrazine hydrate medium, a degradation mechanism proposed by analyzing the degradation products suggests that the degradable properties could be attributed to the phenyl-2-pyridyl ether structure in the polymer. In addition, the transformation of the compound structure from dinitro compound to damine monomer in the synthetic process is discussed in respect to X-ray structure.
- Monomer structure,
- Polymer solubility,
- Degradable polyimide
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1.
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