M. Shibata et al., RELATIONSHIP BETWEEN MOLECULAR-STRUCTURE AND THERMAL-PROPERTIES OF POLY(ARYL ETHER KETONE)S, Macromolecular rapid communications, 18(2), 1997, pp. 99-105
Five kinds of poly(aryl ether ketone)s (PAEKs) having para-substituted
linear molecular chains were synthesized via nucleophilic substitutio
n reaction of the corresponding difluoro- and dihydroxy-compounds. The
glass transition temperature and melting temperature of the PAEKs mea
sured through differential scanning calorimetry in addition to those o
f other PAEKs reported are approximately proportional to the logarithm
of the ratio of the mole fractions of ketone and ether groups in the
repeating unit of the PEAKs. On the other hand, this ratio does not af
fect the crystal structure of the PAEKs.