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題 名 | 以加速老化探討市售護膚乳化製品之流變性與安定性=Studies of Rheology and Stability of the Commercial Skin Care Emulsions by Using Accelerated Aging |
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作 者 | 張妙玲; 張朝明; 陳榮秀; | 書刊名 | 技術學刊 |
卷 期 | 14:4 1999.12[民88.12] |
頁 次 | 頁579-585 |
分類號 | 466.7 |
關鍵詞 | 切變減稀型流體; 加速老化; 乳化製品; 安定性; Shear-thinning flow; Accelerated aging; Emulsion product; Stability; |
語 文 | 中文(Chinese) |
中文摘要 | 以加速老化的方法探討乳化製品之流變性與安定性,取市售護膚乳化製品共十一 種進行加速老化,以儀器測定結果發現所有製品表現原有的切變減稀型流體,即黏度隨著剪 切速度( RPM )增加而降低,這種流體塗抹於皮膚時具有較易延伸及易滋潤的觸感。 並利 用繪製的經時黏度落差曲線比較每一製品之安定行為,得知製品之黏度均隨著加速老化時間 而改變, 除 D3 製品具有正值黏度落差曲線外其他均呈現負值黏度落差曲線,其中製品 D2 的負值黏度落差曲線最緩和,而顯現出較穩定的流變性,而 B1 製品之黏度落差曲線最陡峻 ,顯現最不好的安定性。從油水相分離時間的實驗亦顯出與黏度落差曲線的變化具有一致性 的結果。另外在非密閉系及密閉系中進行加速老化測試的比較,非密閉系之總成份逸散比率 與油水分離速度均較密閉系大。 |
英文摘要 | A series of commercial skin care emulsions (total, 11 products) were used to investigate their rheological behavior and stability using an accelerated aging test. The results show that all of the commercial products tested exhibited shear-thinning in the flow behavior (viscosity decreased with shear rate). This kind of flow, when rubbed on the skin, will produce a feeling of being "thinner" and "more watery". The stability of the commercial products was compared by the viscosity difference curves. It was found that viscosity of the flow changed with aging time. All of the products except D3 showed negative deviation from the viscosity difference curves. By observing the shape of the viscosity difference curves, it was found that sample D2 has a smoother curve than others, which implies the flow of D2 was more stable than others. Sample B1, however, has a steeper curve than others. That means B1 has the worst flow stability. The times for oil/water phase separation were paralledled with the changes of viscosity difference curves. The samples were treated by an accelerated aging method in open and closed systems. The weight loss and oil/water phase separation were more pronounced in the open system than in the closed one. |
本系統中英文摘要資訊取自各篇刊載內容。