کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1791851 1023622 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of new CaCO3/poly(2-acrylamido-2-methylpropanesulfonic acid–co-acrylic acid) polymorphs, as templates for core/shell particles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Synthesis and characterization of new CaCO3/poly(2-acrylamido-2-methylpropanesulfonic acid–co-acrylic acid) polymorphs, as templates for core/shell particles
چکیده انگلیسی

The crystallization of CaCO3 particles from aqueous solutions in the absence and presence of a strong/weak anionic copolymer, poly(2-acrylamido-2-methylpropanesulfonic acid–co-acrylic acid) (PAMPSAA) is discussed in this paper. Vaterite/calcite polymorphs with different sizes and spherical shapes were obtained. The products were characterized by infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, flow particle image analysis, laser diffraction technology, and SEM and optical microscopy. Oppositely charged chitosan and PAMPSAA were assembled onto carbonate colloidal particles in a layer-by-layer manner to yield core–shell structures.


► Crystallization of CaCO3 with or without a strong/weak anionic copolymer, PAMPSAA.
► Particles were characterized by FTIR, XRD, XPS, FPIA, SEM, and optical microscopy.
► Vaterite is the main polymorph in CaCO3 particles, PAMPSAA favor calcite formation.
► Larger, smoother, and more circular particles were obtained for CaCO3/PAMPSAA.
► Chitosan and PAMPSAA assembling onto carbonate particles yield core–shell structures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 351, Issue 1, 15 July 2012, Pages 23–31
نویسندگان
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