Preparation and Characterization of Hyperbranched Poly(ether ether ketone)s Suitable as Rheology Control Agents for Linear Poly(ether ether ketone)s

Xiujie Li; Shuling Zhang; Fugui Zhou; Jinhui Pang; Chunfeng Zhang; Dong Sun; Jianxin Mu; Guibin Wang; Zhenhua Jiang

Macromolecular Research, Vol.19, No.5, 427-435, May, 2011

DOI10.1007/s13233-011-0503-y Export Citation

Preparation and Characterization of Hyperbranched Poly(ether ether ketone)s Suitable as Rheology Control Agents for Linear Poly(ether ether ketone)s

Xiujie Li, Shuling Zhang, Fugui Zhou, Jinhui Pang, Chunfeng Zhang, Dong Sun, Jianxin Mu, Guibin Wang, and Zhenhua Jiang^†

Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, People’s Republic of China

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Hyperbranched poly(ether ether ketone)s (HPEEKs) that were suitable as rheology control agents for linear poly(ether ether ketone)s (LPEEKs) were first prepared via commercially available hydroquinone (A2 monomer, HQ) and synthesized 3,4',5-trifluoro-benzophenone (BB'2 monomer, TF) effortlessly. The polymerization mode of A2 + BB'2 was demonstrated by MS. Moreover, FTIR, 1H NMR, 13C NMR, and 19F NMR spectroscopy revealed the structure and degree of branching (DB) of the resulting polymers. In comparison with A2 + B3 approach, HPEEK prepared using an A2 + BB'2 strategy possessed a higher molecular weight, and improved the melt processability of LPEEK. Remarkably, with the addition of HPEEK, the mechanical properties of LPEEK increased with a HPEEK content of 5%. The improved mechanical properties were attributed to the good miscibility. Moreover, the addition of HPEEK did not decrease the thermal stability of LPEEK.

Keywords:A2 + BB'2 strategy;hyperbranched;poly(ether ketones);rheology;synthesis.

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