Synthesis and Characterization of Novel Polyamide Containing Ferrocene and Thio-Ether Units

Abstract

Two kinds of new aromatic diamine monomer containing thio-amide unit, bis[4-(p-aminothiophenyl)benzoyl]diamine (ATPBA), were synthesized by two steps, which was reacted with 1,1′-Ferrocenedicarbonyl Chloride (FCDC) to prepare a new polyamide containing ferrocene and thio-ether unit. The polymers were characterized by FT-IR spectrum, ¹H-NMR spectrum, X-ray diffraction, element analyzer, DSC, TGA, SEM, AFM and dissolvability experiment and so on. The intrinsic viscosity of FC-PASAA was 0.42–0.58 dl/g obtained with optimum synthesis conditions. The polymers were found to have excellent thermal performance with glass transition temperature (T _g ) of 229.9–276.8°C, initial degradation temperature (T _d ) of 389.2–391.5°C. They could afford flexible and strong films with tensile strength 66.0–83.9MPa. They showed improved solubility in polar aprotic solvents. They were used to preparing separation membrane successfully.

Keywords:

• Ferrocene
• polyamide
• heat-resistant
• solubility
• membrane

Acknowledgement

This work was supported by research grants from National High Technology Foundation of China (863 program, Grant No.: 2007AA03Z561).

Notes

∗ ++: soluble at room temperature; +: soluble on heating; +−: slightly soluble; −: insoluble with heating.