Thermal properties and crystallization behavior of poly(ether ether ketone ketone)/poly(ether biphenyl ether ketone ketone) copolymers | Zendy

Shibata Mitsuhiro | Zendy; Yosomiya Ryutoku | Zendy; Jiang Zhenhua | Zendy; Fang Zhijie | Zendy; Wu Zhongwen | Zendy

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Thermal properties and crystallization behavior of poly(ether ether ketone ketone)/poly(ether biphenyl ether ketone ketone) copolymers

Author(s) -

Shibata Mitsuhiro,

Yosomiya Ryutoku,

Jiang Zhenhua,

Fang Zhijie,

Wu Zhongwen

Publication year - 1996

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.1996.021971009

Subject(s) - ketone , copolymer , ether , differential scanning calorimetry , polymer chemistry , crystallization , thermogravimetric analysis , materials science , glass transition , biphenyl , chemistry , organic chemistry , polymer , physics , thermodynamics

Thermal properties of poly(ether ether ketone ketone) (PEEKK)/poly(ether biphenyl ether ketone ketone) (PEDEKK) copolymers were investigated by means of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The glass transition temperature ( T g ) increases from 154°C to 183°C as the content of PEDEKK units increases. The melting point ( T m ) of the copolymers varied in the range between 314°C and 409°C and showed the behavior of eutectic type copolymer. From the investigation of the crystallization behavior of the copolymers, it was found that the cold‐crystallization temperature ( T c ′ ) of the amorphous copolymers assumes a maximum value for the copolymer with a mole fraction of the PEDEKK segment ( n B ) of about 0.6, isothermally crystallized PEEKK and the PEEKK/PEDEKK copolymer exhibit double‐melting behavior.

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