単一鎖長非イオン界面活性剤の物理化学的性質

概要

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The physico-chemical properties of a series of monodispersed alkyl polyoxyethylene ethers were measured. The melting points of the samples increased in a zigzag manner with increasing alkyl chain length at a constant polyoxyethylene chain length, although the melting points of fatty alcohols increased linearly with increasing alkyl chain length.<BR>The refractive index increased with increasing polyoxyethylene chain length and alkyl chain length. The refractive index and hydroxyl value showed a linear relationships. The cloud point increased with increasing polarity (HLB, IOB, OH-V), but the cloud points of shorter alkyl chain samples were higher than those with longer chains at the same polarity.