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Synthesis and characterization of a novel carboxyl group containing (co)polyimide with sulfur in the polymer backbone.
MedLine Citation:
PMID:  23015826     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Soluble functional (co)polyimides are of great interest in the area of separation processes or optical applications, due to their excellent mechanical-, thermal- and optical properties, their superior processability and the ability to adapt their properties to a wide range of special applications. Therefore, two series of novel (co)polyimides containing fluorinated sulfur- and carboxylic acid groups consisting of 4,4'-(hexafluoroisopropylidene)di(phthalic anhydride) (6FDA), 3,5-diaminobenzoic acid (DABA), 4,4'-diaminodiphenylsulfide (4,4'-SDA) and 3,3'-diaminodiphenylsulfone (3,3'-DDS) were synthesized in a two-step polycondensation reaction. The synthesized copolymers were characterized by using NMR, FTIR, GPC, and DSC. Furthermore, with regard to processing and potential applications, the thermal stability, solubility in common organic solvents, moisture uptake, and transparency were investigated. Compared to commercially available transparent polymers, i.e., polymethylmethacrylate and cycloolefin polymers, the sulfur (co)polyimides containing carboxyl groups showed much higher glass-transition temperatures, comparably low moisture uptake and high transmission at the sodium D-line. Furthermore, good solubility in commonly used organic solvents makes them very attractive as high-performance coating materials.
Authors:
Miroslav Mrsevic; David Düsselberg; Claudia Staudt
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Publication Detail:
Type:  Journal Article     Date:  2012-05-25
Journal Detail:
Title:  Beilstein journal of organic chemistry     Volume:  8     ISSN:  1860-5397     ISO Abbreviation:  Beilstein J Org Chem     Publication Date:  2012  
Date Detail:
Created Date:  2012-09-27     Completed Date:  2012-09-28     Revised Date:  2013-05-30    
Medline Journal Info:
Nlm Unique ID:  101250746     Medline TA:  Beilstein J Org Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  776-86     Citation Subset:  -    
Affiliation:
Department of Organic and Macromolecular Chemistry, Heinrich-Heine University Düsseldorf, Universitätsstr.1, 40225 Düsseldorf, Germany.
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