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Soluble low-κ poly (aryl ether ketone) copolymers containing pendant adamantyl group and long aliphatic side chains

Authors

  • Jinyu Ba,

    1. College of Chemistry, Engineering Research Center of High Performance Plastics, Ministry of Education, Jilin University, ChangChun 130012, People's Republic of China
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  • Zhi Geng,

    1. College of Chemistry, Engineering Research Center of High Performance Plastics, Ministry of Education, Jilin University, ChangChun 130012, People's Republic of China
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  • Jianxin Mu

    Corresponding author
    1. College of Chemistry, Engineering Research Center of High Performance Plastics, Ministry of Education, Jilin University, ChangChun 130012, People's Republic of China
    • College of Chemistry, Engineering Research Center of High Performance Plastics, Ministry of Education, Jilin University, ChangChun 130012, People's Republic of China
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Abstract

The aromatic diphenol monomers, 4-(1-adamantyl)-1,3-benzene diol (AdRES) and 4-(6-(4-hydroxyphenyl)undecan-6-yl)phenol (BISPR5R5) were successfully synthesized and used to synthesize a new series of poly (aryl ether ketone) copolymers (AdRES-BISPR5R5-PEEKs) with different percentages of two diphenol monomers by nucleophilic aromatic substitution polycondensation. The structure of copolymers was confirmed using FTIR and 1H NMR spectroscopy and their thermal and mechanical properties and solubilities were determined. It was found that the flexibility and toughness properties of the copolymers could be controlled by varying the molar ratio of diphenol monomers containing the pendent rigid adamantyl group and the flexible long side chains. They also showed low dielectric constants (κ = 2.50–2.88 at 1 MHz) and low water absorptions. It revealed that the symmetrical long aliphatic side chains were more conducive for reducing the polarity of the polymer chains, loosening the polymer packing, and subsequently reducing polymers' density and dielectric constants than the pendent rigid adamantyl group. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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