SYNTHESIS AND CHARACTERIZATION OF THERMALLY STABLE NOVEL POLYMERS CONTAINING PHENYLTHIOUREA, AZO AND SULFONE GROUPS IN THE BACKBONE

dc.creatorSIVADHAYANITHY,MYLSAMY
dc.creatorRAVIKUMAR,LINGAM
dc.creatorRAMACHANDRAN,T
dc.date2007-09-01
dc.date.accessioned2017-03-07T15:55:19Z
dc.date.available2017-03-07T15:55:19Z
dc.identifierhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000300007
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/393059
dc.descriptionThe present work deals with the synthesis of thermally stable polymers that contain phenylthiourea, sulfone and azo group in the backbone from bisphenol and diacid chlorides. The bisphenol containing phenylthiourea and azo groups was synthesized via three steps. In the first step, 4,4'-bis(thiourea) diphenyl sulfone (BTDS) was obtained from 4,4'- diaminodiphenyl sulfone and ammonium thiocyanate. The second step involved the diazodisation reaction of 4-aminophenol. The third step in the preparation of the monomer was the coupling of bisthiourea (BTDS) with the diazonium chloride in the presence of an alkali which resulted in 4,4'-bis(p-hydroxyphenyl azo thiourea)diphenyl sulfone (HP-ATDS). The final step was the synthesis of polyesters by polycondensation reaction of this monomer with various acid chlorides (both aromatic and aliphatic). The polymers were characterized by solution viscosity, UV-Vis, FT-IR,'H-NMR and TGA. Solubility of the polymers was also tested with different solvents, which is an important parameter for the processablity of the polymer. The synthesis and characterization of the monomer and polymers is discussed herein
dc.formattext/html
dc.languageen
dc.publisherSociedad Chilena de Química
dc.sourceJournal of the Chilean Chemical Society v.52 n.3 2007
dc.subjectpolycondensation
dc.subjectthermal stability
dc.subjectphenylthiourea
dc.subjectsulfone
dc.subjectazo
dc.titleSYNTHESIS AND CHARACTERIZATION OF THERMALLY STABLE NOVEL POLYMERS CONTAINING PHENYLTHIOUREA, AZO AND SULFONE GROUPS IN THE BACKBONE
dc.typeArtículos de revistas


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