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2008年 第2卷 第4期

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《化学科学与工程前沿（英文）》 >> 2008年 第2卷 第4期 doi: 10.1007/s11705-008-0073-5

Synthesis and properties of polybenzazoles containing flexible methylene in backbone

Key Laboratory for Ultrafine Materials of Education, School of Materials Science and Engineering, East China University of Science and Technology;

发布日期： 2008-12-05
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摘要

A novel series of polybenzazoles with rigid-rod benzoxazole cycle and soft methylene segment was designed and synthesized via solution condensation polymerizations from 4,6-diamino-1,3-benzenediol diphosphate, terephthalic acid and aliphatic dicarboxylic acid. The structures of polybenzazoles were characterized by means of FT-IR, H NMR and Wide-angle X-ray diffraction (WAXRD). All the polymers show excellent thermal stability and the s was above 471°C. The intrinsic viscosities [] of the polymers ranged from 0.8 to 0.9. The UV-Vis absorption peaks of the polymers in MSA were blue-shifted from 429 nm for PBO to 291 nm for PBOC7, and the Stokes shifts in PL spectra enlarged.

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