Synthesis of sulfonated copolyimides membranes based on NTDA dianhydride and effect of synthetic method on polymer properties

سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 715

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شناسه ملی سند علمی:

MEMBRANE02_051

تاریخ نمایه سازی: 22 مهر 1394

چکیده مقاله:

Sulfonated copolyimides (ScoPI) were synthesized with different methods by one-step high temperature direct polymerization in m-cresol solvent. ScoPI molecule structure is formed from 1,4,5,8-Naphthalenetetracarboxylic dianhydride (NTDA). Different methods are include adding benzoic acid at different time levels and reaction time. According to these methods obtained three different production which the most important returned to membrane ability. There had not membrane ability for ScoPI contains 4,4-diaminobiphenyl-2,2-disulfonic acid (BDSA) because synthetic method but ScoPI contains 4,4 diaminostilbene-2,2-disulfonic can form polymer membrane. Membranes were analyzed by FT-IR, Thermogravimetric analysis (TGA), mechanical properties, differential scanning calorimetry (DSC), Water uptake, Ion exchange capacity (IEC) and lambda (λ). In general, ScoPI/DSDSAII was shown significant TGA and mechanical properties than ScoPI/DSDSAII in the same analogues because difference in synthetic method

کلیدواژه ها:

Sulfonated copolyimide ، synthetic method ، benzoic acid ، membrane ability ، one-step high temperature direct polymerization ، NTDA

نویسندگان

a Moradi

Islamic Azad University, Tehran South Branch, Tehran, Iran

m Mortezaei

Tehran, Iran Polymer engineering group, Composite science and technology research center

e Kowsari

Department of Chemistry, Amirkabir University of Technology, Tehran, Iran

m Shokrollahi

Department of textile engineering, Isfahan University of technology, Isfahan, Iran

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