Monomer Synthesis and Characterization of Novel Aromatic Polyamides
Aromatic polyamides are high performance materials,having outstanding thermal and mechanical properties.Poly(2,5-Diamino-terephthalic acid) (PATA) was designed as a novel aromatic polyamide with high strength and modulus.In this paper,2,5-Diamino-terephthalic acid (DATA),as a monomer of PATA,was synthesized from 2,5-Dimetyl-l,4-phenyldiamine (DPA).First step was the amidation of DPA by reacting with acetic anhydride to protect amido group.Then N-(4-Acetylamino-2,5-dimethyl-phenyl)-acetamide (AMPA) was oxidized by potassium permanganate.Finally,AMPA was hydrolyzed by sodium hydroxide and the monomer DATA was precipitated by hydrochloric acid around PH 5.DATA and all the intermediate products were characterized and confirmed by 1HNMR and FT-IR spectra.They were all in great agreement with the proposed structure.The overall yield of DATA was about 40.0%.
synthesis characterization aromatic polyamide 2,5-Diamino-terephthalic acid(DATA)
Wei Hu Guangxian Zhang Fengxiu Zhang Hui Zheng Ming Lu
College of Textiles and Garments, Southwest University, Chongqing ,China School of chemistry and chemical engineering, Southwest University, Chongqing, China
国际会议
太原
英文
45-49
2012-06-23（万方平台首次上网日期，不代表论文的发表时间）