Premium
Synthesis and Characterization of Novel Organosoluble Methyl Substituted Poly(aryl Ether Ketone)s Containing Sulfone Linkage
Author(s) -
Sheng ShouRi,
Liu XiaoLing,
Tong YongFen,
Chen Lie,
Wen HongLi,
Song CaiSheng
Publication year - 2005
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200500131
Subject(s) - chemistry , terephthaloyl chloride , ketone , ether , aryl , phenyllithium , polymer chemistry , sulfone , anhydrous , solubility , chloride , condensation polymer , thermal stability , friedel–crafts reaction , organic chemistry , polymer , catalysis , alkyl
Abstract Several new methyl substituted poly(aryl ether ketone)s containing sulfone linkage with inherent viscosities of 0.62–0.84 dL/g have been prepared from 4,4′‐bis(2‐methylphenoxy)diphenylsulfone and 4,4′‐bis(3‐methylphenoxy)diphenylsulfone with terephthaloyl chloride and isophthaloyl chloride by electrophilic Friedel‐Crafts acylation in the presence of DMF with anhydrous AlCl 3 as a catalyst in 1,2‐dichloroethane, respectively. These polymers having weight‐average molecular weight in the range of 71,000–49,000 are all amorphous and show high glass transition temperatures ranging from 167 °C to 191 °C, excellent thermal stability at temperatures over 400 °C in air or nitrogen, high char yields of 51–58% in nitrogen and good solubility in CHCl 3 and polar solvents such as DMF, DMSO and NMP at room temperature.