LI Zi-fa, ZHANG Zi-yong, ZHOU Qi-feng, LI Zhe. SYNTHESIS OF A MESOGENIC CONDENSATION MONOMER AND THE SEQUENTIAL BLOCK COPOLYMERS THEREOF[J]. Acta Polymerica Sinica, 1989,(2):193-199.
LI Zi-fa, ZHANG Zi-yong, ZHOU Qi-feng, LI Zhe. SYNTHESIS OF A MESOGENIC CONDENSATION MONOMER AND THE SEQUENTIAL BLOCK COPOLYMERS THEREOF[J]. Acta Polymerica Sinica, 1989,(2):193-199.DOI:
This paper deals with the synthesis of mesogenic condensation monomer
2-methyl-1
4-phenylene bis(4-chloroformyl) benzoate. The liquid crystalline non-liquid-crystalline sequential block copolymers made from this mesogenic monomer and 1
10-decanediol and poly (propylene glycol) are also discussed. In the DSC thermograms of the samples with higher inherent viscosity
a marked exothermic peak is found to exist after the melting of the samples. This unusual phenomenon may have suggested an additional organization of the mole-cules in the liquid crystalline state.