失穩分解相分離形成的雙連續結構備受關注並被廣泛利用[1]。有鑒於此，我們在(聚乙二醇/聚乙二醇-丙二醇)共聚物摻合物中並添加自行合成的二氧化矽奈米粒子 (SiNPs) 製造雙連續界面堵塞乳液凝膠(Bicontinuous Interfacially Jammed Emulsion Gels)。我們已經發現在兩項系統中添加奈米粒子可以有效抑制相分離的粗化速度，因而可更深入探究奈米粒子之濃度對摻合物系統型態和流變行為之影響。
相差顯微鏡和小角光散射儀的數據顯示，當奈米粒子加入後雙連續結構的粗化會在相對低溫下停止，而隨著奈米粒子濃度的增加，其停止演化之特徵尺寸越小；在相對高溫時的結構演化則僅有速率的下降而無法被停止，推測隨著溫度升高，除介面張力以外重力亦會做為外加力場影響相分離。流變結果驗證此行為，其顯示樣品為雙連續結構並在實驗相對低溫與低頻率中表現出固體行為，這歸因於奈米粒子網路的形成，且藉由應力鬆弛時間得知網路結構的空間侷限性有關聯。

The bicontinuous structure has caught great attention [1]. In this work, we added self-synthesized silica nanoparticles (SiNPs) to Poly (ethylene glycol)/Poly (ethylene glycol-ran-propylene glycol) blends (PEG/RAN) to fabricate bijels (bicontinuous interfacially jammed emulsion gels). Since we found that the addition of SiNPs could suppress coarsening of PEG/RAN, we could further investigate the effect of various concentrations of nanoparticles and quenching temperatures on the dynamic and rheological behavior of PEG/RAN.
The structural evolution and kinetic behavior of polymer blends were observed by phase contrast microscope (PCM) and time-resolved small angle light scattering (SALS). Adding nanoparticles can jammed the structure at a relatively low temperature. The characteristic size where jamming occurred became smaller as the concentration increases, and the phase separation is dominated by interfacial tension. On the contrary, the structure at a relatively high phase-separation temperature kept growing, speculating that external force, such as gravity, governs. Rheological studies validate this behavior, showing a bicontinuous structure and solid behavior at low temperatures and frequencies, which is attributed to the particle network formation. The relaxation time of the PEG/RAN reveals the relationship to the spatial confinement of the network.

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