INVESTIGADORES
MOSIEWICKI mirna Alejandra
artículos
Título:
Effect of the composition and chemical aging in tung oil-styrene networks: Free volume and dynamic-mechanical properties
Autor/es:
C. MACCHI; C. MEIORIN; M. A. MOSIEWICKI; M. I. ARANGUEN; A. SOMOZA
Revista:
EUROPEAN POLYMER JOURNAL
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2017 vol. 87 p. 231 - 240
ISSN:
0014-3057
Resumen:
A study on the effect of the composition and chemical aging in tung oil-styrene networksprepared by cationic polymerization is presented. To this aim, the experimental techniquespositron annihilation lifetime spectroscopy and dynamic-mechanical analysis were used.The representative experimental parameters were the nanohole free volume, the glasstransition temperature and the dynamic mechanical properties, storage and loss moduliand tand. The results obtained were discussed in terms of the structure of the formed network,in particular to the packing of the molecular segments and the presence of danglingchains derived from the tung oil. In the case of aged samples the results were interpreted interms of the oxidative polymerization and degradative processes in the copolymersstudied.
