MIGUEL Maria De La Paz
congresos y reuniones científicas
"Intherphase development in a three component polymer system"
MIGUEL, MARÍA DE LA PAZ; TOMBA, J. PABLO
Los Cocos, Córdoba, Argentina
Congreso; Archipol `09 "V Argentine-Chilean Polymer Symposium" "VIII Argentine Polymer Symposium"; 2009
Comité Organizador y Comité Científico de ARCHIPOL
Polymer diffusion plays a central role in the control of homogenization and phase separation, with implications in several technologies that depend critically on the properties of the interphases subsequently formed. Our work has been motivated by some strategies investigated in latex industry, where additives initially confined in one type of latex polymer particles are allowed to diffuse in the rest of the particles. The phenomenon is rather complex and we are currently pursuing a better mechanistics understanding. We attempt to mimic that situation by studying a three component system. One of the phases is formed by a mixture of two polystyrenes (PS), with strikingly different molecular weigth (low-M and high-M ), where the low-M component plays the role of plasticizer. The mixture is allowed to diffuse in a high molecular weight glassy polyphenylene oxide matrix (PPO). The interphase that develops is probed by optical sectioning with Confocal Raman microspectroscopy.