• 作者： 羅世農
• 作者服務機構： 榮民總醫院醫學研究部
• 中文摘要： 本研究觀察在電解質氯化鋁存在時，非離子表面活性劑 Polyoxyethylene glycol monoethers of n-hexadecanol對聚苯乙烯粒子懸液劑的沉澱容積，搖散程度及外觀之影響。在高濃度非離子表面活性劑時，獲得一鬆軟及體積較小的凝聚沉澱，此沉澱很容易被分散。在低濃度非離子表面活性劑時，獲得一體積較大的凝絮狀沉澱，在製藥的應用上，此沉澱很容易被搖散。
• 英文摘要： The effect of nonionic surface active agents of polyoxyethylene glycol monoethers of n-hexadecanols on the sedimentation volume，redispersibility and appearance of a polystyrene latex suspen-sion in the presence of aluminium chloride has been studied. At high concentrations of nonionic surfaceactive agents, soft aggregated suspensions with small sedimentation volume were obtained and sedimentswere redispersed easily. Whereas, at low concentrations，large and fluffy sedimentation volumes wereproduced and sediments were resuspended easily in pharmaceutical practice.
• 中文關鍵字： suspension; nonionic surface active agents; electrolyte
• 英文關鍵字： --