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作 者:黄明富[1] 王丽[1] 沈杰[1] 易昌凤[1,2] 徐祖顺[1,2]
机构地区:[1]湖北大学材料科学与工程学院,湖北省武汉市430062 [2]功能材料绿色制备与应用省部共建教育部重点实验室,湖北省武汉市430062
出 处:《合成树脂及塑料》2011年第6期25-29,共5页China Synthetic Resin and Plastics
基 金:湖北省自然科学基金项目(2008CDB276)
摘 要:用4-苯基-2,6-双[3-(4-氨基-2-三氟甲基苯氧基)苯基]吡啶作为二胺,均苯四甲酸二酐及2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐作为二酐,以N,N,-二甲基甲酰胺为溶剂,通过常规的两步法,合成了可溶性氟化聚吡啶酰亚胺。傅里叶变换红外光谱显示在1780,1720,1380 cm^(-1)附近出现了聚酰亚胺(PI)的特征吸收峰。所得PI可溶解于常见溶剂中;在氮气气氛中,PI的玻璃化转变温度为263.3℃,10%失重温度为563.8℃.800℃质量保持率为59.6%。PI在200~350nm具有良好的紫外光吸收性能,在400nm附近出现非常强的紫色荧光发射峰,且被HCl质子化后的荧光发射峰的强度显著增强。A kind of soluble fluorinated poly(pyridine-imide) was synthesized via the conventional two- step method with 4-phenyl-2,6-bis[3-(4-amino-2-trifluoromethyphenoxy)phenyl]pyridine(m,p-6FPAPP) as the diamine monomer, pyromellitic dianhydride(PMDA) and 2,2-bis[4-(3,4-diearboxyphenoxy)phenyl]propane dianhydride (BPADA) as the dianhydride monomers in dimethylformamide (DMF). The results show that characteristic absorption peaks of polyimide(PI) appear around 1 780, 1 720, 1 380 cm^- in the Fourier transform infrared spectroscopy(FTIR). The poly(pyridine-imide) so prepared can be soluble in conventional organic solvents. The obtained poly (pyridine-imide) has glass transition temperature of 263.3 ℃ and the temperature at 10% mass loss of 563.8 ℃, and the residue at 800 ℃ of 59.6% in nitrogen atmosphere. It exhibits UV absorption bands in the region of 200-350 nm and strong purple fluorescence emission peaks in the vicinity of 400 nm. Furthermore, the fluorescence intensity increases dramatically after protonation with hydrochloric acid.
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