含蒽醌结构聚芳醚砜的合成及表征

以4,4'-二氟二苯砜,4,4'-联苯二酚及1,5-二氯蒽醌为原料,采用亲核缩聚方法将具有良好热稳定性的蒽醌生色团分子以共价键方式引入到聚芳醚砜体系中,制备出了蒽醌含量分别为10%、20%及30%的热分解温度在500℃以上的新型耐高温有机高分子染料.该系列聚合物具有较高的分子量和良好的溶解性.利用红外光谱(FTIR)、核磁共振(1H-NMR)等表征方法确定了聚合物的结构;利用紫外-可见光谱测试(UV-Vis)初步研究了聚合物的光谱学特性;利用差示扫描量热测试(DSC)和热失重分析测试(TGA)研究了聚合物的热性能.

SYNTHESIS AND CHARACTERIZATION OF POLY(ARYLENE ETHER SULFONE) CONTAINING ANTHRAQUINONE MOIETIES

Thermo-stable anthraquinone chromophores were covalently introduced into high performance polymer poly(arylene ether sulfone) via nucleophilic polycondensation reaction using 4,4′-difluorodiphenyl sulfone,4,4′-biphenol and 1,5-dichloroanthraquinone.The content of anthraquinone chromophores could be well controlled by the feed ratio of anthraquinone monomer,1,5-dichloroanthraquinone.This series of novel poly(arylene ether sulfone) colorants containing 10%,20% and 30% anthraquinone units(PAES-An 10,20 and 30) have high molecular weight and show good solubility in high polar aprotic solvents.FTIR and NMR characterizations confirmed the structures of these obtained polymers.A preliminary study of their spectroscopy characteristics was conducted by UV-Vis method.PAES-An polymers show similar spectroscopy behavior but a little red-shift compared to the anthraquinone monomer due to the change of substituent groups after being introduced to PAES.Thermal properties of PAES-An polymers were investigated by DSC and TGA measurements.The introduction of anthraquinone chromophore can increase the glass transition temperature of PAES for its rigid plane structure.It is worth noting that they all show high thermal stability with degradation temperature above 500℃,much higher than the processing temperature of poly(arylene ether sulfone) polymers.High thermal stability and good compatibility make them show potential use for the dying process of high performance plastic poly(arylene ether sulfone).