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Viscoelastic Phase Separation in Polyethersulfone modified Bismaleimide Resin
作者:Xiaoyun Liu, Yingfeng Yu, Shanjun Li
關鍵字:Bismaleimide,Polyethersulfone,Viscoelastic phase separation
論文來源:期刊
具體來源:European Polymer Journal, 2006, 42: 835-842
發表時間:2006年

The polymerization-induced phase separation process of polyethersulfone (PES) modified bismaleimide resin, 4,4-bismaleimidodiphenylmethane (BDM), was investigated by time resolved light scattering (TRLS) and scanning electronic
microscopes (SEM). At the blends with 10 wt% and 12.5 wt% PES, a phase inversion structure was found by SEM. TRLS results displayed clearly the spinodal decomposition (SD) mechanism and the exponential decay procedure of scattering vector qm, which followed Maxwell-type relaxation equation. The characteristic relaxation time s for the blends can be described by the Williams–Landel–Ferry equation. It demonstrated experimentally that the phase separation behaviors in these PES modified bismaleimide blends were affected by viscoelastic effect.

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