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    A systematic surface studies on the glycolipids to understand the surface adsorption behavior

    Year: 2019

    Journal: Colloid Surf. A-Physicochem. Eng. Asp., Volume 563, FEB 20, page 226–236

    Authors: Sekhar, Kanaparedu P. C.; Bangal, Prakriti Ranjan; Nayak, Rati Ranjan

    Organizations: UGC, New DelhiUniversity Grants Commission, India

    Keywords: Glycolipids; Surface adsorption; Langmuir-Blodgett films; Greater uncertainty in A(min); 5 M NaCl sub-phase

    Modular design of highly functionalized glycolipids from the natural origins provides attractive environmentally benign glycolipids with a wide range of interfacial applications. Linear correlation of single chain glycolipid's surface properties at hydrophobic chain length >= 14 is a challenging task by using surface tension (ST) study. The interfacial area per molecule of the glycolipid is responsible for efficient molecular packing and surface activity at the interfaces. In this regard, ST and Langmuir-Blodgett (LB) techniques were collectively employed on a matrix of nine glycolipids with different headgroups at various alkyl chain lengths (C-7-C-21) to elucidate adsorption properties. Surface parameters obtained from ST studies in water as well as in 5 M aqueous NaCl solution has no trend, possible due to deviation from ideal surface behavior. Whereas, water and 5 M NaCl sub-phase LB studies provided a linear structure-property relationship for the glycolipids under investigation. Finally, ST and LB studies collectively reduced the ambiguity in understanding the surface behavior of the glycolipids.
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