نتایج جستجو برای: External gelation

تعداد نتایج: 193811  

2011
R. Villalobos-Carvajal S. Benavides J. E. Reyes

Alginate films with different degrees of crosslinking obtained by internal and external gelation method and alginate films incorporated with oregano essential oil were prepared. The effect of mechanism of gelation and the incorporation of oregano essential oil on their optical, mechanical, antibacterial, microstructural and water vapor barrier properties were evaluated. The films subjected to e...

Journal: :Journal of the Mechanical Behavior of Biomedical Materials 2014

Journal: :Chemical communications 2015
Kun-Peng Wang Yong Chen Yu Liu

A calixarene-based supramolecular hydrogel with a porous network structure was successfully constructed via a hierarchical induced assembly strategy, showing reversible or irreversible gelation behaviors in response to several external stimuli including thermal, redox and ionic strength.

Journal: :Lab on a chip 2009
Choong Kim Kang Sun Lee Young Eun Kim Kyu-Jung Lee Soo Hyun Lee Tae Song Kim Ji Yoon Kang

This paper describes a microfluidic device for the microencapsulation of cells in alginate beads to enhance cell viability. The alginate droplet including cells was gelified with calcified oleic acid, using two-phase microfluidics. The on-chip gelation had generated monodisperse spherical alginate beads, which could not be readily obtained via conventional external gelation in a calcium chlorid...

2016
M. H. Mahdi G. A. Morris Alan M. Smith

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Journal: :Journal of the mechanical behavior of biomedical materials 2014
Georgia Kaklamani David Cheneler Liam M Grover Michael J Adams James Bowen

Alginate hydrogels are commonly used in biomedical applications such as scaffolds for tissue engineering, drug delivery, and as a medium for cell immobilisation. Multivalent cations are often employed to create physical crosslinks between carboxyl and hydroxyl moieties on neighbouring polysaccharide chains, creating hydrogels with a range of mechanical properties. This work describes the manufa...

2016
Georgia Kaklamani David Cheneler Liam M Grover Michael J Adams James Bowen

Alginate hydrogels are commonly used in biomedical applications such as scaffolds for tissue engineering, drug delivery, and as a medium for cell immobilization. Multivalent cations are often employed to create physical crosslinks between carboxyl and hydroxyl moieties on neighbouring polysaccharide chains, creating hydrogels with a range of mechanical properties. This work describes the manufa...

Journal: :Chemical communications 2013
Haridas Kar Mijanur Rahaman Molla Suhrit Ghosh

The utility of an external structure-directing agent to induce orthogonal H-bonding-mediated programmed supramolecular-assembly and gelation of an n-type NDI chromophore is reported. Further, the effect of π-stacking and morphology on electrical conductivity of semiconducting NDI building blocks is revealed.

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