Preparation of poly-p-benzenesulfonamide

Autor:	George E. Hulse, R. James Kersting
Rok vydání:	1974
Předmět:	chemistry.chemical_compound Monomer Materials science chemistry Polymerization Infrared Hydrochloride Thermal decomposition Polymer chemistry Nuclear magnetic resonance spectroscopy Degree of polymerization Glass transition
Zdroj:	Journal of Polymer Science: Polymer Chemistry Edition. 12:2349-2355
ISSN:	1542-9369 0360-6376
DOI:	10.1002/pol.1974.170121016
Popis:	The poly-p-benzenesulfonamide (PBS) structure has been prepared by the transamidation of N1,N1-dimethylsufanilamide hydrochloride in a melt reaction at 180°C. The polymeric nature of the product is exhibited by brittle film formation and a glass transition temperature of 180–190°C. Infrared and NMR spectroscopy are consistent with the proposed structure. The number-average degree of polymerization was measured by NMR. The maximum degree of polymerization was 14. Failure to obtain an optimum molecular weight did not appear to be due to monomer purity. Increasing the reaction temperature from 180 to 220°C led to side reactions giving insoluble and infusible product. PBS underwent thermal decomposition near 310°C. The decomposition temperature is independent of molecular weight.
Databáze:	OpenAIRE
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