کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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608971 | 880612 | 2011 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Novel calcium-alginate capsules with aqueous core and thermo-responsive membrane Novel calcium-alginate capsules with aqueous core and thermo-responsive membrane](/preview/png/608971.png)
Novel calcium-alginate (Ca-alginate) capsules with aqueous core and thermo-responsive membrane are successfully prepared by introducing a co-extrusion minifluidic approach, and the thermo-responsive gating characteristics of Ca-alginate capsule membranes embedded with poly(N-isopropylacrylamide) (PNIPAM) microspheres are investigated systematically. The experimental results show that the prepared Ca-alginate capsules are highly monodisperse, and the average diameter and membrane thickness of Ca-alginate capsules are about 2.96 mm and 0.11 mm respectively. The Ca-alginate capsule membranes exhibit desired thermo-responsive gating property. With increasing the content of PNIPAM microspheres embedded in the Ca-alginate capsule membranes, the thermo-responsive gating coefficient of the capsule membranes increases simply. When solute molecules diffuse through the capsule membrane, the thermo-responsive gating coefficient is significantly affected by the molecular weight of solute molecules.
Novel calcium-alginate capsules with aqueous core and thermo-responsive membrane embedded with poly(N-isopropylacrylamide) microspheres are successfully fabricated. The trans-membrane diffusional permeability of solute molecules can be controlled by changing the environmental temperature.Figure optionsDownload high-quality image (172 K)Download as PowerPoint slideResearch highlights
► Novel calcium-alginate capsules are fabricated with aqueous core and thermo-responsive membrane.
► The thermo-responsive calcium-alginate capsule membranes are embedded with poly(N-isopropylacrylamide) microspheres.
► The trans-membrane diffusional permeability of solute molecules can be controlled by changing the environmental temperature.
► The thermo-responsive gating coefficient of diffusional permeability is significantly affected by the molecular weight of solute molecules.
Journal: Journal of Colloid and Interface Science - Volume 353, Issue 1, 1 January 2011, Pages 61–68