Sodium alginate–gelatin polyelectrolyte complex membranes with both high water vapor permeance and high permselectivity

Li, Yifan; Jia, Haiying; Cheng, Qinglai; Pan, Fusheng; Jiang, Zhongyi

doi:10.1016/j.memsci.2011.03.058

Cited by 98 publications

(33 citation statements)

References 43 publications

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“…The free carboxylic ions on its chains made Ge to have the potential to act as a novel crosslinking agent [22]. Furthermore, the flexible backbone of Ge is favorable for the compact and ordered packing, which ensures high permselectivity [23]. Due to an isotropic nature of covalent bond and ionic interactions, the resulting membranes demonstrate excellent mechanical property and homogeneity.…”

Section: Introductionmentioning

confidence: 99%

Development of novel membranes for PV separation of water–isopropanol mixtures using poly(vinyl alcohol) and gelatin

Sajjan

2013

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Development of novel membranes for PV separation of water–isopropanol mixtures using poly(vinyl alcohol) and gelatin

Sajjan

2013

Journal of Membrane Science

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“…The diffractogram of SA (Fig. a) presents two broad peaks at 2 θ = 13° and 2 θ = 21°, indicating its amorphous nature . Compared to SA, the peak at 2 θ = 13° disappears in both SA hydrogel (Fig.…”

Section: Resultsmentioning

confidence: 96%

Facile preparation and characterization of sodium alginate/graphite conductive composite hydrogel

Xiao

et al. 2015

Polymer Composites

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Conductive composite hydrogels based on sodium alginate (SA) and graphite were fabricated by a facile method via dispersing homogeneously conductive graphite into SA hydrogel matrix. The hydrogel was formed by in situ release of Ca2+ from Ca–EDTA, thus eliminating the multistep reactions and tedious purification compared to the previous work. Raman spectra, scanning electron microscopy (SEM), X‐ray diffraction (XRD), and thermogravimetric analysis (TGA) were used to characterize the structure, crystalline nature, and thermostability of SA/graphite composite hydrogels. The SA/graphite composite hydrogels exhibited the improved network and layer‐type structure. The thermal stability of the hydrogel decreased slightly after the graphite was incorporated into the SA hydrogel matrix regardless of the content of graphite. The enhanced mechanical strength of SA/graphite composite hydrogel was achieved via increasing the f value (i.e., [Ca2+]/[COO‐ in alginate]) and lowering graphite content. The conductivity of the composite hydrogels could be varied in a broad range, reaching up to 10−3 S/cm, mainly depending on the content of graphite and the f value. POLYM. COMPOS., 37:3050–3056, 2016. © 2015 Society of Plastics Engineers

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“…This is specifically a reaction between the 360 positive charges from the amino groups of GE and the negative charges from the carboxyl 361 group of SA [23]. Furthermore, these changes could also be related to the molecular 362 interaction between SA and GE chains via hydrogen bonding and electrostatic attractions 363 [24]. Such interactions can affect swelling and adhesion behavior of the wafers.…”

Section: In Vitro Drug Dissolution Studies 336mentioning

confidence: 99%

Composite alginate and gelatin based bio-polymeric wafers containing silver sulfadiazine for wound healing

Boateng

Burgos-Amador

Okeke

et al. 2015

International Journal of Biological Macromolecules

113

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26Lyophilized wafers comprising sodium alginate (SA) and gelatin (GE) (0/100, 75/25, 27 50/50, 25/75, 0/100 SA/GE respectively) with silver sulfadiazine (SSD, 0.1% w/w) have 28 been developed for potential application on infected chronic wounds. Polymer-drug 29 interactions and physical form were characterized by Fourier transform infrared 30 spectroscopy (FTIR) and X-ray diffraction (XRD) respectively, while morphological 31 structure was examined using scanning electron microscopy (SEM). Functional 32 characteristics [(mechanical hardness and adhesion using texture analyzer, and swelling 33 capacity)] of blank wafers were determined as performed in order to select the optimal 34 formulations for drug loading. Finally, the in vitro drug dissolution properties of two 35 selected drug loaded wafers were investigated. There was an increase in hardness and a 36 decrease in mucoadhesion with increasing GE content. FTIR showed hydrogen bonding 37 and electrostatic interaction between carboxyl of SA and amide of GE but no interaction 38 between the polymers and drug was observed, with XRD showing that SSD remained 39 crystalline during gel formulation and freeze-drying. The results suggest that 75/25 40 SA/GE formulations are the ideal formulations due to their uniformity and optimal 41 mucoadhesivity and hydration. The drug loaded wafers showed controlled release of SSD 42 over a 7 hour period which is expected to reduce bacterial load within infected wounds. 43 44

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Sodium alginate–gelatin polyelectrolyte complex membranes with both high water vapor permeance and high permselectivity

Cited by 98 publications

References 43 publications

Development of novel membranes for PV separation of water–isopropanol mixtures using poly(vinyl alcohol) and gelatin

Development of novel membranes for PV separation of water–isopropanol mixtures using poly(vinyl alcohol) and gelatin

Facile preparation and characterization of sodium alginate/graphite conductive composite hydrogel

Composite alginate and gelatin based bio-polymeric wafers containing silver sulfadiazine for wound healing

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