WEN Hongli, ZHAN Yulin, LI Jing, ZHONG Ming, SONG Caisheng. STUDY ON CRYSTALLIZATION BEHAVIOR OF ALL PARA-POLY(ARYL ETHER SULFONE ETHER KETONE KETONE). [J]. Acta Polymerica Sinica (1):7-10(2009)
DOI:
WEN Hongli, ZHAN Yulin, LI Jing, ZHONG Ming, SONG Caisheng. STUDY ON CRYSTALLIZATION BEHAVIOR OF ALL PARA-POLY(ARYL ETHER SULFONE ETHER KETONE KETONE). [J]. Acta Polymerica Sinica (1):7-10(2009) DOI: 10.3724/SP.J.1105.2009.00007.
STUDY ON CRYSTALLIZATION BEHAVIOR OF ALL PARA-POLY(ARYL ETHER SULFONE ETHER KETONE KETONE)
were prepared by low temperature solution polycondensation of 4
4′-bis(phenoxy)diphenyl sulfone (DPODPS) and terephthaloyl chloride (TPC) in AlCl3/DCE/DMF solvent system.The effects of some factors on solvent induced crystallization behavior of p-PESEKKs were investigated and compared.The results showed that p-PESEKKs of low crystallinity were obtained in the AlCl3/DCE/DMF good solvent system
and they became amorphous after fusion because of the influence of tetrahedral cofiguration of sulfuryl.It was found that the solvent induced crystallization rate and degree of crystallinity decreased with increasing the carbon number of ester end groups
and the end groups with the same structure as the main chain were favorable for crystallization.The high molecular weight p-PESEKKs with lower proportion of end groups were easy to be crystallized by solvent inducement.