کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
613122 880715 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization limits of a polymer adsorbed under a monolayer by GIXD measurements
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Characterization limits of a polymer adsorbed under a monolayer by GIXD measurements
چکیده انگلیسی

The study of interactions between a polyelectrolyte (sodium polystyrene sulfonate, PSSt) or its water-soluble monomer (SSt) at different concentrations and a monolayer of dioctadecyldimethylammonium bromide (DODA) has been investigated. The monolayer phase behavior and structure at the air–water interface were studied by surface pressure–area isotherms and grazing incidence X-ray diffraction measurements. DODA molecules organize following a rectangular unit cell in all three subphases (pure water, water containing SSt or PSSt). The presence of polyelectrolytes in the subphase decreases, on one hand, the tilt angle and the mean area per molecule in the condensed phase, revealing a higher 2D density in this state, and, on the other hand, the amount of organized matter.

Do GIXD measurements allow the determination of the structure of a polymer adsorbed under a Langmuir monolayer? Information can indirectly be obtained indirectly from the combination of measurements carried out on monolayers stabilized on various subphases.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 306, Issue 1, 1 February 2007, Pages 82–88
نویسندگان
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