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    Sintesis Surfaktan 2-Heptadekil4-(Metilen-2-Hidroksi Propanoil)-1,3-Dioksolan

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    Fulltext (1.832Mb)
    Date
    2002
    Author
    G, Devi Marleny
    Advisor(s)
    Brahmanta, Hemat R
    Sembiring, Seri Bima
    Ginting, Mimpin
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    Abstract
    Acetalitation of monolactoyl glycerol with stearaldehyde gave 2-heptadecyl-4-(methylene-2-hidroxy propanoyl)- 1,3-dioxolane with a yield of 82 %. Monolactoyl glycerol was prepared from sodium lactate and a-monochlorohidrin with 60% yield, and stearaldehyde was prepared by oxidation of stearyl alcohol (49%). The product of each reaction was confirmed by FT-IR and ‘H-NMR spectroscopies. The hydrophilicity of monolactoyl glycerol and 2-heptadecyl-4-(methylene-2-hidroxy propanoyl)- 1,3-dioxolane were determined by Du-Nouy tensiometer. The value of Critical Micelle Concentration (CMC) and HLB of monolactoyl glycerol and 2-heptadecyl-4-(methylene-2-hidroxy propanoyl)-1,3-dioxolane were 0.07% ; 4.38 and 0.0009% ; 2.82 respectively.
     
    Asetalisasi monolaktoil gliserol dengan stearaldehida menghasilkan 2-heptadekil-4-(metilen-2-hidroksi propanoil)-1,3-dioksolan dengan rendemen sebesar 82%. Senyawa monolaktoil gliserol dibuat dari reaksi natrium laktat dengan u-monoklorohidrin dengan rendemen sebesar 60%, dan stearaldehida dibuat dengan oksidasi stearil alkohol dengan rendemen sebesar 49%. Produk yang dihasilkan pada setiap tahap reaksi dikonfirmasikan dengan spektroskopi FT-IR dan ‘H-NMR. Kehidrofilikan monolaktoil gliserol dan 2-heptadekil-4-(metilen-2-hidroksi propanoil)-1,3-dioksolan diuji dengan tensiometer Du-Nouy. Harga Critical Micelle Concentration (CMC) dan HLB dari monolaktoil gliserol dan 2-heptadekil-4-(metilen-2-hidroksi propanoil)1,3- dioksolan adalah 0,07% ; 4,38 dan 0,0009% ; 2,82.

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    http://repositori.usu.ac.id/handle/123456789/41203
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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV