1,721,112 research outputs found

    The surface structure of well-ordered native cellulose fibrils in contact with water

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    Abstract not availableErik Malm, Vincent Bulone, Kristina Wickholm, Per Tomas Larsson, Tommy Iverse

    Multiple-response optimization of the acidic treatment of the brown alga Ecklonia radiata for the sequential extraction of fucoidan and alginate

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    Abstract not availableAndrew John Lorbeer, Jelle Lahnstein, Vincent Bulone, Trung Nguyen, Wei Zhan

    The structure of model membranes studied by vibrational sum frequency spectroscopy

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    The structure and order of insoluble Langmuir monolayers consisting of 1,2-distearoyl-sn-glycero-3-phosphatidylcholine (DSPC or 18:0 PC) and the surrounding water molecules have been investigated by vibrational sum frequency spectroscopy (VSFS). At surface pressures of 1, 15, and 57 mN/m corresponding to molecular areas of 53, 50, and 43 Å2, respectively, the DSPC molecules formed a well ordered film. Both the VSF signal from the methyl stretching vibrations of the lipid and the surrounding water increased with enhanced surface pressure, as a result of the higher surface density and increased order of the system. Water molecules hydrating the polar parts of the headgroup and in close contact to the hydrocarbon groups of the lipid were observed in all three polarization combinations of the laser beams, and distinguished by their different vibrational frequencies.Jonathan F. D. Liljeblad, Mark W. Rutland, Vincent Bulone, C. Magnus Johnso
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