作者：Li, L.; Yu, Y. F.*; Wu, Q. L.; Zhan, G. Z.; Li, S. J
關(guān)鍵字：Polymer, Electronic materials, IR spectroscopy, Kinetic parameters
論文來源：期刊
具體來源：Corrosion Science 2009, 51(12), 3000-3006
發(fā)表時間：2009年
In this investigation, water sorption behaviour of six epoxy systems with different chemical structure of amines and epoxies were monitored at five temperatures ranging from 35 to 75 °C. The sorption process was analyzed by gravimetric measurements, positron annihilation lifetime spectroscopy (PALS), and attenuated total reflection Fourier transform infrared spectroscopy (ATR-IR). PALS measurements showed that the free volume fraction is not a decisive factor in governing the equilibrium water content, while the polarity of the system is the essential factor. ATR-IR curve fitting were consistent with the theoretical calculated results, and correlated to the diffusion coefficients from gravimetric measurements.