M. Ghaemy, Mohammad Barghamadi
Apr 15, 2009
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Influential Citations
14
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Journal
Journal of Applied Polymer Science
Abstract
A new diacetamido-diamine monomer, N′-[7-(acetyl-4-aminoanilino)-9,9-dioctylflouren-2-yl]-N′-4-aminophenyl) acetamide (ADOAc), with flourene-based structure was prepared from the reaction of 4-aminoacetanillide with 2,7-dibromo-9,9-dioctylfluorene in the presence of 10 mol % CuI, 20 mol % N,N′-dimethylethylene diamine as catalyst and K2CO3 as base. Two new flourene-ring containing polyimides were prepared from the reaction of ADOAc with aromatic dianhydrides such as pyromellitic dianhydride (PMDA) and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) via chemical imidization of poly(amic acid). The new diamine and the related polyimides were characterized by using conventional methods such as FT-IR, NMR, and elemental analysis. The polyimides obtained from the reaction of ADOAc with PMDA (PIa) and of ADOAc with BTDA (PIb) had inherent viscosity of 0.49 and 0.58 dL/g respectively, and showed excellent solubility in a variety of organic solvents. The polyimides of PIa and PIb showed excellent thermal stability with 10% weight loss in nitrogen atmosphere at temperatures of 418°C and 407°C and Tg of 172°C and 167°C, respectively. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009