کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10603088 982436 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chitosan fibrous 3D networks prepared by freeze drying
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Chitosan fibrous 3D networks prepared by freeze drying
چکیده انگلیسی
Nonwoven fabrics and structured particles prepared by electrohydrodynamic jetting have been attracting increasing attention in various research areas. Chitosan has been known as a poorly spinnable polymer, often electrospun using a mixed solution of polyethylene glycol. Herein, we report that a combination of electrospraying and subsequent freeze drying can produce chitosan fibrous 3D network structures from low concentration chitosan solutions, well below fiber forming concentrations. Nanoparticle suspensions of chitosan were first fabricated by a controlled electrospraying process and then freeze drying assembled the nanoparticles into fibrous networks. The formation of a columnar ice phase and subsequent drying produced chitosan fibrous structures of a few microns in diameter. The X-ray diffraction results and the surface morphologies of the fibers indicate a unique fiber formation mechanism of biaxial compression. This technique can prepare nonwoven fabrics from nanoparticles, which lead to novel opportunities in applications including tissue engineering, cell or drug delivery, and membranes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 84, Issue 4, 2 April 2011, Pages 1329-1336
نویسندگان
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