Oligomeric aliphatic/aromatic poly(amides) containing silicon in the main chain and phthalimide or tetrahalophthalimide moieties as side groups

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dc.contributor.authorTagle, L. H.
dc.contributor.authorTerraza, C. A.
dc.contributor.authorTundidor-Camba, A.
dc.contributor.authorSoto-Salamanca, J.
dc.date.accessioned2025-01-23T21:48:34Z
dc.date.available2025-01-23T21:48:34Z
dc.date.issued2014
dc.description.abstractOligomeric aliphatic poly(amides) (PAs) with phthalimide or tetrahalophthalimide were obtained from aspartic and glutamic acids which reacted previously with phthalic or tetrahalophtalic anhydrides, and the diamine bis(4-aminophenyl)-diphenylsilane, by direct polycondensation according to the Yamazaki method. PAs were characterized by IR and H-1, C-13 and Si-29 NMR, inherent viscosity measurements and optical activity. The results showed low eta (inh) values due to the insolubility of the PAs in the reaction media. All PAs were soluble in aprotic polar solvents and partially soluble in other common solvents as CHCl3 and THF. The T (g) values for the PAs derived from aspartic acid showed an increase when the size of the halogen atom is increased due to the more rigidity of the imide group. For those PAs derived from glutamic acid the influence of the side groups was less important due probably to the higher influence of the longer aliphatic main chain. The thermal degradation analysis showed that PAs have good TDT values with the exception of PA-7. The temperature for 50 % of weight loss for both PAs series was dependent on the nature of the halogen, showing an increase when the halogen was more electronegative. PAs do not showed good optical properties, with the exception of PA-1 and PA-6 without halogen atoms in the side chain, due to the increase of the volume of the side group which affects their mobility increasing their packing. It is possible to see a low increase of the transmittance when the aliphatic chain is increased from aspartic to glutamic acid due to an increase of the flexibility of the main chain.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s00289-013-1061-6
dc.identifier.eissn1436-2449
dc.identifier.issn0170-0839
dc.identifier.urihttps://doi.org/10.1007/s00289-013-1061-6
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101760
dc.identifier.wosidWOS:000329101400020
dc.issue.numero1
dc.language.isoen
dc.pagina.final300
dc.pagina.inicio287
dc.revistaPolymer bulletin
dc.rightsacceso restringido
dc.subjectPoly(amides)
dc.subjectSilicon-containing polymers
dc.subjectThermal properties
dc.subjectAmino acids
dc.titleOligomeric aliphatic/aromatic poly(amides) containing silicon in the main chain and phthalimide or tetrahalophthalimide moieties as side groups
dc.typeartículo
dc.volumen71
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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