SHENG Shouri, LIU Yan, LIU Yuan, HUANG Zhenzhong, LIU Xiaoling, SONG Caisheng. SYNTHESIS AND CHARACTERIZATION OF A SOLUBLE XANTHENE-CONTAINING POLY(ETHER ETHER KETONE KETONE)[J]. Acta Polymerica Sinica, 2009,(9):958-961.
SHENG Shouri, LIU Yan, LIU Yuan, HUANG Zhenzhong, LIU Xiaoling, SONG Caisheng. SYNTHESIS AND CHARACTERIZATION OF A SOLUBLE XANTHENE-CONTAINING POLY(ETHER ETHER KETONE KETONE)[J]. Acta Polymerica Sinica, 2009,(9):958-961. DOI: 10.3724/SP.J.1105.2009.00958.
9-Bis(4-hydroxyphenyl)xanthene (BHPX) was synthesized with good yield from xanthenone in one-pot
two-step synthetic procedure.A novel cardo poly(ether ether ketone ketone) (PEEKK-X) containing xanthene structure was successfully prepared via a typical nucleophilic aromatic substitution polycondensation of BHPX and 1
3-bis(4-fluorobenzoyl)benzene with the use of sulfolane as solvent.The polymer was characterized by FTIR
DSC
TGA and WAXD
etc.The results showed that the polymer had excellent heat-resistance
the glass transition temperature (Tg) was 215℃.The onset temperature taken at 5% weight loss of the polymer in nitrogen was 558℃.The polymer was noncrystalline and was soluble in common organic solvents such as DMF
DMAc
NMP and CHCl3 at room temperature.The polymer formed transparent
strong and flexible films with tensile strength of 81.5 MPa
Young’s moduli of 2.48 GPa and elongation at break of 16.8%.