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Diacid architecture effect on the synthesis and microstructure of rigid‐rod poly(benzobisthiazole)s
Author(s) -
Chen ChienFan,
Juang LihJeng,
Hsu TzuChien,
Wang JehJeng,
Wang LiFang
Publication year - 2006
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2102
Subject(s) - phosphorus pentoxide , condensation polymer , polymer , polymer chemistry , microstructure , materials science , phosphoric acid , inherent viscosity , viscosity , chemical engineering , intrinsic viscosity , organic chemistry , chemistry , composite material , engineering , metallurgy
Six poly(benzobisthiazole)s (PBTs) have been synthesized by the solution polycondensation of 2,5‐diamino‐1,4‐benzenedithiol in poly(phosphoric acid) (PPA) with systematically varied diacids to demonstrate the diacid architecture effect of the aromatic heterocyclic rigid‐rod polymers. The role of PPA is identified and the effects of phosphorus pentoxide and water on PBT during polycondensation are discussed. Polymer properties such as the inherent viscosity and decomposition temperature are correlated to the diacid chemistry. The effect of diacid architecture on the synthesis and microstructure of PBT is studied. The results are discussed in terms of resonance, symmetry, and solubilization of the diacids. Copyright © 2006 Society of Chemical Industry