Synthesis and Characterization of the Hyperbranched Polyamide with Triphenyl Phosphorus Structure and the Influence on Mechanical Property of Nylon-6

Abstract:

Due to the unique molecular structure, hyperbranched polymers showed many characteristics,such as high solubility, low viscosity and high-activity. Therefore, it had been widely applied in different areas. In this paper, isophthaloyl chloride (IPC) was used as A₂ monomer and tri (3-aminophenyl) phosphine oxide (TAPPO) was used as B₃ monomer, compounding hyperbranched polyamide with triphenyl phosphorus structure . The best reaction conditions were obtained that the molar ratio of TAPPO and IPC was 1.5:1, the reaction temperture was 50°C, the reaction concentration was 0.1 mol/L and the reaction time was 2h.Besides, the structure of the polymer was characterized by FT-IR and H1-NMR analysis.The ¹H-NMR result showed that the branched degree of hyperbranched polyamide was 0.36.The DSC result showed that the glass transition temperature (Tg) was 130.7 °C. When the addition of P-HBPA content was 0.5% in PA6/P-HBPA blends, the properties of tensile strength, elongation at break and impact strength reached the maximum.

• Periodical: Advanced Materials Research (Volume 830)
• Pages: 167-171
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.830.167
• Online since: October 2013
• Authors: Xu Dong Tang*, Qi Ming Kong
• Keywords: Degree of Branching, Hyperbranched Polymers, Reaction Conditions, Reaction of B₃+A₂

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