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Study on the polyethersulfone/bismaleimide blends: morphology and rheology during isothermal curing
作者:Xiaoyun Liu, Yingfeng Yu, Minghai Wang, Lin Zhao, Liang Li, Shanjun Li
關(guān)鍵字:polyethersulfone,bismaleimide,blends,morphology,rheology
論文來源:期刊
具體來源:Journal of Materials Science, 2007, 42: 2150-2156
發(fā)表時(shí)間:2007年

The morphology and rheological behave of the polyethersulfone/bismaleimide blends during isothermal curing was investigated by rheological instrument, different scanning calorimetry (DSC), scanning electronic microscopy (SEM) and time resolved light scattering (TRLS). The influences of the PES content, the PES molecular weight and the curing temperatures on the complex viscosity of the blends were discussed in detail, which suggested that the fluctuation of the
complex viscosity at the beginning of phase separation was largely dependent on the PES content, while the PES molecular weight mainly influenced the onset of phase separation and had relatively less influence on the evolution of complex viscosity. Moreover, the evolution of complex viscosity of blends with high PES content was relatively less sensitive to the curing temperature. In addition, it was found that the phase morphology as well as the composition of continuous phase played an important role in the rheological behavior of PES modified bismaleimide resin during isothermal curing.

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