Proceedings of the Korean Society of Rheology Conference (한국유변학회:학술대회논문집)
The Korean Society of Rheology
- Semi Annual
Domain
- Chemical Engineering > Polymeric Materials and Process
2002.05a
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In this study we investigated the reaction kinetics by a convenient but useful method-rheology to characterize the interface between two immiscible blends with a Reactive compatibilizer. Also, we made an attempt to correlate changes of interface roughness with rheological properties. The blend systems employed in this study was mono-carboxylated polystyrene (PS-mCOOH) and an poly(methyl methacrylate-ran-glycidylmethacrylate) (PMMA-GMA). PS-mCOOH was synthesized by an anionic polymerization and PMMA-GMA by a free radical polymerization. We prepared two plates of each polymer using compression molding with a smooth surface molder, then put one upon another. As soon as these two plates welds together inside a rheometer under nitrogen environment, the torque and moduli were obtained with reaction time at different temperatures. Through the analysis of this modulus change with reaction time, we estimated interfacial reaction and roughening. The increment of modulus in initial state can be correlated to the extent of reaction. We obtained the reaction kinetic constant by fitting appropriate kinetic equation into experimental data. We also showed that increment of modulus in later state was due to by roughened interface.
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Yang, Seung-Man;Yi, Gi-Ra;Jeon, Seog-Jin;Vinothan Manoharan;Todd Thorsen;David J. Pine;Stephan R. Quake 113
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Koo, Chong-Min;Ham, Hyeong-Taek;Wang, Ki-Hyun;Chung, In-Jae;Kim, Sang-Ouk;Kim, Dae-Cheol;Zin, Wang-Cheol 125
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