کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5188988 1381174 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Natural microshells of alginate-chitosan: Unexpected stability and permeability
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Natural microshells of alginate-chitosan: Unexpected stability and permeability
چکیده انگلیسی
We utilized alginate sodium (ALG) and chitosan (CHI) as wall components to construct a natural and biodegradable polyelectrolyte microshell by the electrostatic self-assembly technique. The resultant ALG-CHI shells were found to maintain intact spherical shape in different poly(styrenesulfonate sodium) (PSS) bulk concentrations (maximal detection concentration 20.0 wt%). Compared with the shells composed of PSS and poly(allylamine hydrochloride) (PAH) that collapse or deform at a 4 wt% or more than 4 wt% PSS concentration, the ALG-CHI shells display higher stability. Meanwhile, the permeability of the ALG-CHI shells prior to and after incubation in PSS solutions was directly traced by the fluorescence recovery after photobleaching (FRAP). The composition of the ALG-CHI shells themselves is thought to be responsible for the differences in the stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 17, 9 August 2006, Pages 6167-6171
نویسندگان
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