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| dc.contributor | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
|---|---|
| dc.contributor | Universitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables. |
| dc.contributor.author | Murase Fernández, Sara Keiko |
| dc.contributor.author | Puiggalí Bellalta, Jordi |
| dc.contributor.author | Valle Mendoza, Luis Javier del |
| dc.contributor.author | Franco García, María Lourdes |
| dc.date | 2014-04-05 |
| dc.identifier.citation | Murase, S. K. [et al.]. Synthesis and characterization of poly(ester amides)s with a variable ratio of branched odd diamide units. "Journal of applied polymer science", 05 Abril 2014, vol. 131, núm. 7, p. 1-13. |
| dc.identifier.citation | 0021-8995 |
| dc.identifier.citation | 10.1002/app.40102 |
| dc.identifier.uri | http://hdl.handle.net/2117/22978 |
| dc.description.abstract | The synthesis of a series of poly(ester amide)s constituted by glycolic acid, adipic acid, and different ratios of 1,3-pentanediamine and 1,5-pentanediamine units was studied and the derived copolymers were characterized. Thermal polycondensation between the potassium adipate salt and the appropriate ratio of N,N-bis(chloroacetyl)-1,3-pentanediamine and N,N-bis(chloroacetyl)-1,5-pentanediamine was proved to be effective, proceeded with high yield, and rendered samples with moderate molecular weight for carefully controlled competitive thermal degradation reactions. Physical properties were highly dependent on the final composition. In particular, crystallinity and thermal stability decreased with 1,3-pentanediamine unit content, that is, with the incorporation of lateral ethyl groups into the main chain. The presence of these units also changed solubility in solvents like methanol and degradability in a protease K enzymatic medium. Specifically, incorporation of 1,3-pentanediamine units led to a gradual increase in degradability. All poly(ester amide)s were able to establish intermolecular hydrogen bonding interactions, which in semicrystalline samples pointed to typical sheet structures of polyamides according to X-ray diffraction and infrared spectroscopic data. |
| dc.description.abstract | Peer Reviewed |
| dc.language.iso | eng |
| dc.relation | http://onlinelibrary.wiley.com/doi/10.1002/app.40102/abstract |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
| dc.rights | info:eu-repo/semantics/openAccess |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
| dc.subject | Polyesters |
| dc.subject | biodegradable |
| dc.subject | degradation |
| dc.subject | polycondensation |
| dc.subject | ALIPHATIC DICARBOXYLIC-ACIDS |
| dc.subject | GLYCOLIC ACID |
| dc.subject | BRILL TRANSITION |
| dc.subject | MICROSPHERES |
| dc.subject | POLYMERS |
| dc.subject | 6-HEXANEDIAMINE |
| dc.subject | CRYSTALLIZATION |
| dc.subject | NANOCOMPOSITES |
| dc.subject | TEMPERATURE |
| dc.subject | DIRECTIONS |
| dc.subject | Polièsters |
| dc.title | Synthesis and characterization of poly(ester amides)s with a variable ratio of branched odd diamide units |
| dc.type | info:eu-repo/semantics/publishedVersion |
| dc.type | info:eu-repo/semantics/article |
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