CIFICEN   24414
CENTRO DE INVESTIGACIONES EN FISICA E INGENIERIA DEL CENTRO DE LA PROVINCIA DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Structural properties of tung oil-based polymers: Influence of the type of co-monomer on the free volume and thermo-mechanical properties
Autor/es:
C. MEIORIN; A. SOMOZA; P.S. ANBINDER; C. MACCHI; M.A. MOSIEWIKI; M.I. ARANGUREN.
Lugar:
Orlando
Reunión:
Congreso; 18th International Conference; 2018
Institución organizadora:
Department of Physics and Astronomy, Bowling Green State University
Resumen:
The present work is part of a systematic study of structural properties of Tungoil-based thermoset polymer prepared by cationic polymerization. Recently, we havereported results on the effect of the composition and chemical ageing of tungoil-styrene co-polymers on the free volume and dynamic-mechanical properties [1].This work is addressed to study the effect of the co-monomer type on thestructural properties of TO-based polymers. To this aim, the experimentalresults were obtained by means of PALS, differential scanning calorimetry (DSC)and dynamic-mechanical test (DMA). Specifically, natural and synthetic co-monomers such as styrene (St),divinyl benzene (DVB), tung oil methyl esther (ME) and epoxidized soy oil(AESO) were used to prepare the different TO-co-monomers samples with a fixed composition;i.e. weight ratio equal to 70/30. For each sample, values of the free nanoholevolume (vh), the glass transitiontemperature (Tg), the storage and loss moduli (E´ and E´´,respectively) and tan delta (tan d) were obtained. On the otherhand, we have followed up to one year the kinetic evolution of the free volumefor each co-polymers and for two different aging conditions; room temperature and50 °C.The obtained results were discussed in terms of the structure of the formednetwork, in particular to the packing of the molecular segments and thepresence of dangling chains derived from the different monomers. For thekinetic evolution of vh,the results were interpreted in relation to the oxidative polymerization anddegradative processes during the aging.  [1] C. Macchi, C. Meiorin, M. A. Mosiewicki, M.I. Aranguren and A. Somoza, European Polymer Journal 87, 231?240 (2017).